HEAD MUSCLES (VENTRAL)
Parts
Origin
Insertion
Action
1.
Digastric
mastoid process of
temporal and jugular
process of occipital
ventromedial
surface of
dentary
depresses
mandible
2.
Mylohyoid
medial surface of
dentary
midventral
raphe; posterior
fibers to
basihyoid bone
elevates floor of
oral cavity;
draws hyoid
anteriorly
3.
Geniohyoid
ventromedial surface of
dentary, just posterior
to symphysis
ventral surface
of basihyoid
draws hyoid
anteriorly
4.
Sternohyoid
1st costal cartilage and
manubrium of sternum
basihyoid
draws hyoid
posteriorly
5.
Sternomastoi
d
anterior surface of
manubrium of sternum
lateral portion
of nuchal crest
of skull and
mastoid process
of temporal
acting singly:
flexes neck
laterally; acting
with other side
sternomastoid:
depresses snout
6.
Clavotrapezi
us
medial half of nuchal
crest of skull and
middorsal line up to
neural process of axis
clavicle and
raphe shared
with
clavobrachialis
draws scapula
anterodorsally
7.
External
Jugular Vein
Not a muscle; a large vein that crossed the sternomastoid
muscle
FORE LIMB MUSCLES (LATERAL)
Parts
Origin
Insertion
Action
all 3 heads of the triceps
brachii insert on the
olecranon process of
ulna by a common
tendon
all 3 heads of the triceps
brachii act to extend
antebrachium
1.
Triceps brachii (long
head)
posterior border of scapula, near
glenoid fossa
2.
Triceps brachii (lateral
head)
deltoid ridge of humerus
3.
Brachialis
lateral surface of humerus
lateral surface of ulna,
just distal to semilunar
notch
flexes antebrachium
4.
Brachioradialis
midshaft of humerus
styloid process of radius
supinates manus
5.
Extensor Carpi Radialis
Longus (Longer)
Humerus near other extensors
second and third
metacarpals
extends manus (paw)
6.
Extensor Carpi Radialis
Brevis (Shorter)
7.
Extensor Digitorum
Communis
lateral surface of the humerus
above the lateral epicondyle
lateral surface of the
humerus above the
lateral epicondyle
extension of the
second, third, fourth,
and fifth digits
8.
Extensor Digitorum
Lateralis/
Peroneus Tertius
lateral surface of fibula
tendon of extensor
digitorum longus
extends and abducts 5th
digit; flexor or pes —
crouch; extends ankle
joint—H&W
9.
Extensor Carpi Ulnaris
lateral epicondyle of humerus;
semilunar notch of ulna
proximal end of fifth
(5th) metacarpal
extends 5th digit and
ulnar side of wrist
10.
Flexor Carpi Ulnaris
medial epicondyle of humerus;
olecranon
pisiform bone of wrist
flexes ulnar side of wrist
11.
Anconeus of Triceps
Brachii
distal end of the humerus
lateral surface of ulna
strengthens elbow joint;
rotates ulna
FORE LIMB MUSCLES (LATERAL)
Upper Arm (Lateral)
Parts
1.
2.
Acromiotrapeziu
s
Levator
Scapulae
Ventralis
3.
Teres Major
4.
Origin
metacromion
process and
anterior half of
spine of scapula
adducts and
stabilizes scapulae
occipital bone and transverse
process of atlas
ventrally on
metacromion and
infraspinous fossa
of scapula
draws scapula
anteriorly
dorsal third of posterior
border of scapula
medial surface of
humerus, by
tendon in common
latissimus dorsi
flexes and medially
rotates humerus
deltoid ridge of humerus
5.
Triceps brachii
(long head)
posterior border of scapula,
near glenoid fossa
6.
Medial Head of
Triceps Brachii
shaft of humerus
8.
9.
Action
middorsal line from neural
process of axis to 4th
thoracic, by aponeurosis
Triceps brachii
(lateral head)
(Reflected)
7.
Insertion
all 3 heads of the
triceps brachii
insert on the
olecranon process
of ulna by a
common tendon
all 3 heads of the
triceps brachii act
to extend
antebrachium
lateral surface of humerus
lateral surface of
ulna, just distal to
semilunar notch
flexes antebrachiu
Clavodeltoid/
Clavobrachialis
clavicle and raphe shared
with clavotrapezius
medial surface of
ulna, just distal to
semilunar notch
flexes
antebrachium
Anconeus of
Triceps Brachii
distal end of the humerus
lateral surface of
ulna
strengthens elbow
joint; rotates ulna
Brachialis
FORE LIMB MUSCLES (MEDIAL)
Parts
1.
Brachioradialis
2.
Extensor Carpi
Radialis Longus
(Longer)
3.
Extensor Carpi
Radialis Brevis
(Shorter)
4.
Pronator Teres
5.
Flexor Carpi Radialis
Origin
Insertion
Action
midshaft of humerus
styloid process of radius
supinates manus
lateral surface of the humerus
above the lateral epicondyle
second and third
metacarpals
extends manus (paw)
medial epicondyle of the
humerus
radius
rotates radius to prone
position
second and third
metacarpals
flexes these
metacarpals
tendons passing
through wrist ligaments
and divides into four or
five tendons
flexor of digits
6.
Palmaris Longus
7.
Flexor Carpi Ulnaris
medial epicondyle of humerus;
olecranon
pisiform bone of wrist
flexes ulnar side of wrist
8.
Clavodeltoid/
Clavobrachialis
clavicle and raphe shared with
clavotrapezius
medial surface of ulna,
just distal to semilunar
notch
flexes antebrachium
9.
Biceps Brachii
small tubercle near dorsal margin
of glenoid fossa of scapula, by
tendon
bicipital tuberosity of
radius, by tendon
flexes antebrachium
10.
Epitrochlearis
surface of latissimus dorsi
olecranon process of
ulna, by fascia
extends antebrachium
FORE LIMB MUSCLES (MEDIAL)
Parts
Origin
11.
Triceps brachii (long
head)
posterior border of scapula, near
glenoid fossa
12.
Medial Head of
Triceps Brachii
shaft of humerus
13.
Flexor Digitorum
Superficialis
(Plantaris)
lateral epicondyle of femur and
patella
Insertion
Action
all 3 heads of the
triceps brachii insert on
the olecranon process
of ulna by a common
tendon
all 3 heads of the
triceps brachii act to
extend antebrachium
by tendon extending
past proximal end of
calcaneum and onto
tendon of flexor
digitorum brevis
extends pes (and,
through flexor
digitorum brevis, flexes
digits 2 to 5)
TRUNK/FORE LIMB MUSCLES (LATERAL/VENTRAL)
Parts
Origin
Insertion
Action
1.
Pectoantebrachial
is
manubrium of sternum
fascia covering proximal
surface of antebrachium
2.
Pectoralis major
anterior sternebrae
pectoral ridge of humerus
adducts humerus
3.
Pectoralis minor
body of sternum
near distal border of
bicipital groove of
humerus
adducts forelimb
4.
Xiphihumeralis
xiphoid process of sternum
5.
Linea Alba
6.
Biceps brachii
7.
Triceps brachii
(long head)
posterior border of scapula,
near glenoid fossa
all 3 heads of the triceps
brachii insert on the
olecranon process of ulna
by a common tendon
all 3 heads of the
triceps brachii act to
extend antebrachium
8.
Teres Major
dorsal third of posterior
border of scapula
medial surface of
humerus, by tendon in
common latissimus dorsi
flexes and medially
rotates humerus
9.
Subscapularis
subscapular fossa of scapula
lesser tuberosity of
humerus
adducts humerus
ventral midline fibrous zone where the right and left abdominal walls meet
TRUNK/FORE LIMB MUSCLES (LATERAL/VENTRAL)
Parts
10.
11.
Serratus
Ventralis
Latissimus
Dorsi
Origin
Insertion
Action
Cervicis
transverse processes of 3rd
to 7th cervical vertebrae
medial surface of
scapula, near dorsal
border
draws scapula anteroventrally
Thoracis
lateral surface of first 9 or 10
ribs
medial edge of
scapula, near dorsal
border
draws scapula ventrally, helps
support trunk draws scapula
ventrally, helps support trunk
thoracolumbar fascia
medial surface of
proximal diaphysis of
humerus
draws humerus posterodorsally
TRUNK/FORE LIMB MUSCLES (LATERAL/DORSAL)
Parts
Origin
Insertion
Action
1.
Latissimus Dorsi
thoracolumbar fascia
medial surface of proximal
diaphysis of humerus
2.
Spinotrapezius
middorsal line from neural
processes of most thoracic
vertebrae
tuberosity of spine of
scapula; fascia of
supraspinatus and
infraspinatus muscles
3.
Acromiotrapezius
middorsal line from neural
process of axis to 4th thoracic,
by aponeurosis
metacromion process and
anterior half of spine of
scapula
adducts and stabilizes
scapulae
4.
Clavotrapezius
medial half of nuchal crest of
skull and middorsal line up to
neural process of axis
clavicle and raphe shared
with clavobrachialis
draws scapula
anterodorsally
5.
Levator Scapulae
Ventralis
occipital bone and transverse
process of atlas
ventrally on metacromion
and infraspinous fossa of
scapula
draws scapula
anteriorly
6.
Spinodeltoid
middle third of spine of
scapula
deltoid ridge of humerus
flexes and rotates
humerus laterally
7.
Acromiodeltoid
posterior margin of acromion
of scapula
lateral surface of
spinodeltoid muscle
8.
Clavodeltoid/
Clavobrachialis
clavicle and raphe shared with
clavotrapezius
medial surface of ulna, just
distal to semilunar notch
flexes antebrachium
9.
Triceps brachii
(long head)
posterior border of scapula,
near glenoid fossa
10.
Triceps brachii
(lateral head)
deltoid ridge of humerus
all 3 heads of the triceps
brachii insert on the
olecranon process of ulna
by a common tendon
all 3 heads of the
triceps brachii act to
extend antebrachium
draws humerus
posterodorsally
TRUNK MUSCLES (DORSAL/SUPERIOR)
Parts
Origin
Insertion
Action
1.
Clavotrapezius
(Reflected)
medial half of nuchal crest
of skull and middorsal line
up to neural process of axis
clavicle and raphe
shared with
clavobrachialis
draws scapula
anterodorsally
2.
Acromiotrapezi
us
middorsal line from neural
process of axis to 4th
thoracic, by aponeurosis
metacromion process
and anterior half of
spine of scapula
adducts and
stabilizes scapulae
3.
Supraspinatus
suprapinous fossa of scapula
4.
Infraspinatus
infraspinous fossa of scapula
5.
Triceps brachii
(long head)
posterior border of scapula,
near glenoid fossa
6.
Triceps brachii
(lateral head)
deltoid ridge of humerus
7.
Acromiodeltoid
8.
greater tuberosity of
humerus
extends humerus
rotates humerus
laterally
all 3 heads of the
triceps brachii insert
on the olecranon
process of ulna by a
common tendon
all 3 heads of the
triceps brachii act to
extend
antebrachium
posterior margin of
acromion of scapula
lateral surface of
spinodeltoid muscle
flexes and rotates
humerus laterally
Clavodeltoid/
Clavobrachialis
clavicle and raphe shared
with clavotrapezius
medial surface of
ulna, just distal to
semilunar notch
flexes antebrachium
9.
Rhomboideus
Capitis
medial portion of nuchal
crest
anterior part of dorsal
border of scapula
rotates and draws
scapula anteriorly
10.
Splenius
(Capitis)
anterior middorsal line
nuchal crest
acting singly: flexes
head laterally;
acting with other
side splenius:
elevates head
TRUNK MUSCLES (DORSAL/SUPERIOR)
Parts
11.
Rhomboideus
(Minor)
12.
Rhomboideus
(Major)
13.
Spinotrapezius
14.
Latissimus
Dorsi
15.
Longissimus
Dorsi
Origin
Insertion
Action
posterior cervical and
anterior thoracic vertebrae
posterior part of
dorsal border of
scapula
draws scapula
toward vertebral
column
middorsal line from neural
processes of most thoracic
vertebrae
tuberosity of spine of
scapula; fascia of
supraspinatus and
infraspinatus muscles
draws scapula
posterodorsally
thoracolumbar fascia
medial surface of
proximal diaphysis of
humerus
draws humerus
posterodorsally
medial division
sacral and caudal vertebrae
more anterior lumbar,
sacral, and caudal
extends vertebral
column
lateral division
ilium and deep layer of
thoracolumbar fascia
more anterior lumbar,
sacral, and caudal
ABDOBEN MUSCLES (DORSAL/MEDIAL)
Parts
Body (Lateral)
1.
Multifidus
2.
Erector Spinae
3.
External Oblique
Origin
Insertion
various parts of more posterior
sacral, lumbar, thoracic, and
cervical vertebrae
neural processes of
more anterior
vertebrae
posterior 9 or 10 ribs and
thoracolumbar fascia
mainly on linea alba
from sternum to
pubis, by aponeurosis
Action
acting singly: flexes
vertebral column
laterally; acting with
other side multifidus:
extends vertebral
column
constricts abdomen
4.
Latissimus Dorsi
thoracolumbar fascia
medial surface of
proximal diaphysis of
humerus
draws humerus
posterodorsally
5.
Spinotrapezius
middorsal line from neural
processes of most thoracic
vertebrae
tuberosity of spine of
scapula; fascia of
supraspinatus and
infraspinatus muscles
draws scapula
posterodorsally
6.
Thoracolumbar
Fascia (Cut)
band of connective tissue present in the lower back
ABDOBEN MUSCLES (VENTRAL/MEDIAL)
Parts
1.
Aponeurosis
2.
Rectus
Abdominis
3.
Transversus
Abdominis
4.
External
Oblique
5.
Internal
Oblique
Origin
Insertion
Action
Not a muscle; a type of deep fascia; large and
sheetlike tendon; attachment is aponeurotic.
pubis
costal
cartilages and
sternum
costal cartilage of
vertebrocostal and
vertebral ribs,
transverse
processes of lumbar
vertebrae, ventral
margin of ilium
linea alba
posterior 9 or 10
ribs and
thoracolumbar
fascia
mainly on linea
alba from
sternum to
pubis, by
aponeurosis
thoracolumbar fascia
and iliac crest
linea alba, by
aponeurosis
compresses
abdomen;
draws ribs
and sternum
posteriorly,
flexing the
trunk
constricts
abdomen
constricts
abdomen
HIND LIMB MUSCLES (LATERAL/DORSAL)
Parts
1.
Semitendinosus
2.
Biceps Femoris
3.
Origin
Insertion
Action
proximomedial surface
of tibia
flexes crus, extends
thigh
ischial tuberosity
by broad aponeurosis
to patella and proximal
half of tibia
flexes crus, abducts
thigh
Gluteofemoralis/
Caudofemoralis/
Coccygeofemoralis/
Cluteobiceps/
anterior caudal vertebrae
patella
abducts thigh and
extends crus
4.
Gluteus Maximus/
Superficialis
posterior sacral and anterior
caudal vertebrae, and gluteal
fascia
distal part of greater
trochanter of femur
5.
Gluteus Medius
posterior sacral and anterior
caudal vertebrae, dorsolateral
surface of ilium, and sacral fascia
proximal part of
greater trochanter of
femur
6.
Tensor Fasciae Latae
anteroventral surface of ilium
fascia lata, which
merges with proximal
part of aponeurosis of
biceps femoris
flexes thigh
7.
Sartorius
iliac crest and anteromedial
margin of ilium
proximomedial surface
of tibia, and patella
adducts thigh,
contributes to
extension of crus
abducts thigh
HIND LIMB MUSCLES (INFERIOR/DORSAL)
Parts
Origin
Insertion
Action
1.
Biceps Femoris
(Reflected)
ischial tuberosity
by broad aponeurosis
to patella and proximal
half of tibia
flexes crus, abducts
thigh
2.
Gluteofemoralis/
Caudofemoralis/
Coccygeofemoralis/
Cluteobiceps/
(Reflected)
anterior caudal vertebrae
patella
abducts thigh and
extends crus
3.
Gluteus Maximus
(Reflected)
posterior sacral and anterior caudal
vertebrae, and gluteal fascia
distal part of greater
trochanter of femur
4.
Gluteus Medius
posterior sacral and anterior caudal
vertebrae, dorsolateral surface of
ilium, and sacral fascia
proximal part of greater
trochanter of femur
abducts thigh
5.
Tensor Fasciae
Latae (Reflected)
anteroventral surface of ilium
fascia lata, which
merges with proximal
part of aponeurosis of
biceps femoris
flexes thigh
6.
Semitendinosus
ischial tuberosity
proximomedial surface
of tibia
flexes crus, extends
thigh
7.
Semimembranosus
ischial tuberosity and posterior
margin of ilium
distomedial surface of
femur
extends thigh, flexes
crus
8.
Adductor Femoris
pubis and ischium
shaft of femur (linea
aspera)
adducts and extends
thigh
9.
Sciatic Nerve
Not a muscle; sends and receives impulses to the posterior muscles of the thigh
(Biceps Femoris
HIND LIMB MUSCLES (INFERIOR/DORSAL)
Parts
Origin
Insertion
Action
10.
Vastus Lateralis
greater trochanter and
dorsolateral surface of femur
lateral surface of patella
extends crus
11.
Sartorius
iliac crest and anteromedial
margin of ilium
proximomedial surface of
tibia, and patella
adducts thigh,
contributes to
extension of crus
12.
Tibialis Anterior/
Cranialis
proximolateral surface of tibia
and proximomedial surface of
fibula
metatarsal 1
flexes pes
13.
Extensor Digitorum
Longus
lateral epicondyle of femur
distal phalanges of digits 2 to
5, by tendon that branches
into 4 portions
extends digits 2 to 5;
flexes pes
14.
Peroneus Complex
fibula
metatarsals and digits
extensor and flexor of
foot
15.
Soleus
proximal third of fibula
proximal end of calcaneum
(with tendon of
gastrocnemius)
extends pes
16.
Gastrocnemius
lateral and medial
epicondyles of femur, and
patella
by tendon onto proximal end
of calcaneum, together with
tendon of soleus muscle
extends pes; flexes crus
HIND LIMB MUSCLES (DORSAL)
Parts
Origin
Insertion
Action
1.
Tibialis Anterior
proximolateral surface of
tibia and proximomedial
surface of fibula
metatarsal 1
flexes pes
2.
Extensor
Digitorum
Longus
lateral epicondyle of
femur
distal phalanges of
digits 2 to 5, by
tendon that branches
into 4 portions
extends digits 2 to
5; flexes pes
3.
Peroneus
Longus/
Fibularis Longus
proximal half of fibula
by tendon onto
proximal part of
metatarsals 2 to 4
flexes and everts
pes
4.
Peroneus brevis/
Fibularis brevis
distal half of fibula
lateral surface of
metatarsal 5
extends pes
5.
Extensor
Digitorum
Lateralis/
Peroneus Tertius
lateral surface of fibula
tendon of extensor
digitorum longus
extends and
abducts 5th digit;
flexor or pes —
crouch; extends
ankle joint—H&W
6.
Soleus
proximal third of fibula
proximal end of
calcaneum (with
tendon of
gastrocnemius)
extends pes
7.
Gastrocnemius
lateral and medial
epicondyles of femur, and
patella
by tendon onto
proximal end of
calcaneum, together
with tendon of soleus
muscle
extends pes; flexes
crus
HIND LIMB MUSCLES (DORSAL)
Parts
8.
Biceps Femoris
9.
Semitendinosus
10.
Origin
ischial tuberosity
Insertion
Action
by broad
aponeurosis to
patella and
proximal half of
tibia
flexes crus, abducts
thigh
ischial tuberosity
proximomedial
surface of tibia
flexes crus, extends
thigh
Semimembranos
us
ischial tuberosity and
posterior margin of ilium
distomedial surface
of femur
extends thigh,
flexes crus
11.
Adductor
Femoris
pubis and ischium
shaft of femur
(linea aspera)
adducts and
extends thigh
12.
Vastus Lateralis
greater trochanter and
dorsolateral surface of femur
lateral surface of
patella
extends crus
HIND LIMB MUSCLES (VENTRAL)
Parts
Origin
Insertion
Action
1.
Sartorius
iliac crest and anteromedial
margin of ilium
proximomedial
surface of tibia, and
patella
adducts thigh,
contributes to
extension of crus
2.
Gracilis
pubic and ischial symphyses
proximomedial
surface of tibia,
crural fascia
adducts thigh, flexes
crus
3.
Skippy's Scrotum
a skin-covered sac just ventral to the anus; male reproductive organ
4.
Semitendinosus
5.
Gastrocnemius
6.
7.
proximomedial
surface of tibia
flexes crus, extends
thigh
lateral and medial epicondyles
of femur, and patella
by tendon onto
proximal end of
calcaneum, together
with tendon of
soleus muscle
extends pes; flexes
crus
Flexor Digitorum
Superficialis
(Plantaris)
lateral epicondyle of femur and
patella
by tendon extending
past proximal end of
calcaneum and onto
tendon of flexor
digitorum brevis
extends pes (and,
through flexor
digitorum brevis,
flexes digits 2 to 5)
Soleus
proximal third of fibula
proximal end of
calcaneum (with
tendon of
gastrocnemius)
extends pes
ischial tuberosity
HIND LIMB MUSCLES (VENTRAL/MEDIAL)
Parts
Origin
Insertion
Action
Sartorius
iliac crest and anteromedial
margin of ilium
proximomedial surface
of tibia, and patella
2.
Vastus Lateralis
greater trochanter and
dorsolateral surface of femur
lateral surface of
patella
3.
Rectus Femoris
ventral margin of ilium
anterior to acetabulum
lateral surface of
patella
4.
Vastus Medialis
shaft of femur
medial surface of
patella (and patellar
ligament)
5.
Iliopsoas
Complex
lumbar and posterior
thoracic vertebrae, and ilium
lesser trochanter of
femur
flexes and rotates
thigh
surface of femur, just
distal to lesser
trochanter
adducts thigh
shaft of femur (linea
aspera)
adducts thigh
extensor of thigh—
wiscnitzer
flexor of thigh—
crouch—probably
right
1.
6.
7.
Pectineus
Adductor Longus/
Adductor Femoris
longus
anterior margin of pubis
adducts thigh,
contributes to
extension of crus
extends crus
HIND LIMB MUSCLES (VENTRAL/MEDIAL)
Parts
Origin
Insertion
Action
8.
Adductor Femoris
(2 Heads)
pubis and ischium
shaft of femur (linea
aspera)
adducts and extends
thigh
9.
Semimembranos
us
ischial tuberosity and
posterior margin of ilium
distomedial surface of
femur
extends thigh, flexes
crus
10.
Semitendinosus
ischial tuberosity
proximomedial surface
of tibia
flexes crus, extends
thigh
Gastrocnemius
lateral and medial
epicondyles of femur, and
patella
by tendon onto
proximal end of
calcaneum, together
with tendon of soleus
muscle
extends pes; flexes
crus
11.
HIND LIMB MUSCLES (VENTRAL/LATERAL)
Parts
1.
2.
3.
4.
5.
6.
7.
8.
Origin
Insertion
Action
Gastrocnemius
lateral and medial epicondyles
of femur, and patella
by tendon onto proximal end
of calcaneum, together with
tendon of soleus muscle
extends pes; flexes crus
Flexor Digitorum
Superficialis
(Plantaris)
lateral epicondyle of femur
and patella
by tendon extending past
proximal end of calcaneum
and onto tendon of flexor
digitorum brevis
extends pes (and,
through flexor
digitorum brevis, flexes
digits 2 to 5)
proximal third of fibula
proximal end of calcaneum
(with tendon of
gastrocnemius)
extends pes
Flexor Digitorum
Longus
proximal portion of fibula and
tibia
joins tendon of flexor hallucis
longus to distal phalanges of
digits 2 to 5
flexes digits 2 to 5 and
extends pes
Tibia (Bone)
the larger and medial bone of the crus, or middle segment of the hindlimb
Tibialis Anterior
proximolateral surface of tibia
and proximomedial surface of
fibula
Calcaneal Tendon
(Achilles Tendon)
Not a muscle; forms by the merging of fibers of the gastrocnemius and the soleus
muscles, forming the tendon that inserts into the posterosuperior aspect of the
calcaneus.
Soleus
metatarsal 1
Lucky Kitty's Foot
flexes pes
MUSCLES OF THE HEAD AND TRUNK
Parts
1
4
Insertion
Action
1.
Masseter
zygomatic arch
ventral part of
masseteric fossa of
dentary
elevates mandible
2.
Mylohyoid
medial surface of dentary
midventral raphe;
posterior fibers to
basihyoid bone
elevates floor of
oral cavity; draws
hyoid anteriorly
3.
Sternomastoid
anterior surface of
manubrium of sternum
lateral portion of
nuchal crest of skull
and mastoid
process of temporal
acting singly: flexes
neck laterally;
acting with other
side sternomastoid:
depresses snout
4.
Cleidomastoid
mastoid process of temporal
clavicle
turns head when
clavicle stabilized;
draws clavicle
anteriorly when
head stabilized
2
3
Origin
MUSCLES OF THE FORE ARM
Parts
1
2
3
4
Origin
Insertion
Action
1.
Biceps Brachii
small tubercle near dorsal margin
of glenoid fossa of scapula, by
tendon
bicipital tuberosity of
radius, by tendon
flexes antebrachium
2.
Brachialis
lateral surface of humerus
lateral surface of ulna,
just distal to semilunar
notch
flexes antebrachium
3.
Triceps brachii
(lateral head)
deltoid ridge of humerus
4.
Triceps brachii (long
head)
posterior border of scapula, near
glenoid fossa
all 3 heads of the
triceps brachii insert
on the olecranon
process of ulna by a
common tendon
all 3 heads of the
triceps brachii act to
extend antebrachium
TRUNK MUSCLES (MEDIAL)
1.
2.
1
2
3
4
5
Parts
Origin
Insertion
Clavodeltoid/
Clavobrachialis
clavicle and raphe shared with
clavotrapezius
medial surface of
ulna, just distal to
semilunar notch
Acromiodeltoid
posterior margin of acromion
of scapula
lateral surface of
spinodeltoid muscle
3.
Spinodeltoid
middle third of spine of
scapula
deltoid ridge of
humerus
4.
Supraspinatus
suprapinous fossa of scapula
5.
Infraspinatus
infraspinous fossa of scapula
greater tuberosity
of humerus
Action
flexes antebrachium
flexes and rotates
humerus laterally
extends humerus
rotates humerus
laterally
TRUNK MUSCLES (LATERAL)
Parts
Origin
Clavodeltoid/
Clavobrachialis
clavicle and raphe shared
with clavotrapezius
medial surface of
ulna, just distal to
semilunar notch
2.
Pectoantebrachialis
manubrium of sternum
fascia covering
proximal surface of
antebrachium
adducts humerus
pectoral ridge of
humerus
adducts humerus
2
6
flexes antebrachium
3.
Pectoralis Major
anterior sternebrae
4.
Pectoralis Minor
body of sternum
5.
Xiphihumeralis
xiphoid process of sternum
near distal border of
bicipital groove of
humerus
adducts forelimb
6.
Latissimus Dorsi
thoracolumbar fascia
medial surface of
proximal diaphysis
of humerus
draws humerus
posterodorsally
4
5
Action
1.
1
3
Insertion
ABDOMEN MUSCLES (DORSAL)
1.
1
2
Parts
Origin
Insertion
Gluteus Medius
posterior sacral and
anterior caudal vertebrae,
dorsolateral surface of
ilium, and sacral fascia
proximal part of
greater trochanter of
femur
Action
abducts thigh
2.
Gluteus Maximus
posterior sacral and
anterior caudal vertebrae,
and gluteal fascia
distal part of greater
trochanter of femur
3.
Gluteofemoralis/
Caudofemoralis/
Coccygeofemoralis/
Cluteobiceps
anterior caudal vertebrae
patella
abducts thigh
and extends
crus
4.
Biceps femoris
ischial tuberosity
by broad
aponeurosis to
patella and proximal
half of tibia
flexes crus,
abducts thigh
5.
Semitendinosus
proximomedial
surface of tibia
flexes crus,
extends thigh
3
4
5
ischial tuberosity
THIGH MUSCLES (LATERAL)
Parts
1
Origin
1.
Rectus
femoris
ventral margin of ilium
anterior to acetabulum
2.
Vastus
lateralis
greater trochanter and
dorsolateral surface of
femur
2
Insertion
Action
lateral surface of
patella
extends crus
3.
3
Vastus
medialis
shaft of femur
medial surface of
patella (and patellar
ligament)
THIGH MUSCLES (MEDIAL)
Parts
1.
Sartorious
2.
Gracilis
3.
Adductor Longus/
Adductor Femoris
longus
3
Origin
pubic and ischial
symphyses
Insertion
proximomedial
surface of tibia,
crural fascia
adducts thigh,
flexes crus
shaft of femur
(linea aspera)
adducts thigh
extensor of thigh—
wiscnitzer
flexor of thigh—
crouch—probably
right
anterior margin of pubis
1
4
2
Action
4.
Adductor femoris
pubis and ischium
shaft of femur
(linea aspera)
adducts and
extends thigh
5.
Semimembranosu
s
ischial tuberosity and
posterior margin of ilium
distomedial
surface of femur
extends thigh,
flexes crus
5