CANINE ANATOMY
Group members
• Loh Mae Chel (mae chel)
• Lee Ching Wai (Jazz)
• Nur Ainsyah Natasya (tasya)
• Desalini (desa)
• Muhammad Fikree (piki)
• HEAD
• Lee Ching Wai D10A015
• Loh Mae Chel D10A016
Cutaneous muscles and major fasciae
Superficial muscles
Deep muscles
Muscle
Origin
Insertion
Innervation
Function
Transverse fibers in the superficial
fascia of the ventral neck
Cervical branch (
R. colli) of the
facial n.
Tenses and moves
the ventral and
lateral skin
M.
cervicoauricularis
superficialis
M.
cervicoscutularis
Dorsal median
Dorsal(convex)
raphe of the neck surface of the
auricular cartilage
Dorsal median
Caudomedial part
raphe of the neck of scutiform
cartilage
Caudal auricular
n., branch of the
facial n.
Caudal auricular
n., branch of
facial n.
Long elevator
muscle of the ear
M.
cervicoscutularis
profundus and
medius
External sagittal
crest
Caudal auricular
n., branch of
facial n.
Muscles of facial expression
M. Sphincter colli
superficialis
Auricular muscles
Lateral border of
the auricular
cartilage
Elevates the ear
and tenses the
scutiform
cartilage
Turns opening (
conchal fissure) of
the auricular
cartilage
caudomedially
Muscle
Origin
Insertion
Innervation
M. occipitalis
External
sagittal
crest
Superficial fascia of Rostral auricular
the head
branches of the
auriculopalpebral n.
M. interscutularis
Transverse fibers passing
between the two scutiform
cartilages
Function
Draws scutiform
cartilage
caudomedially
Rostral auricular
branches of the
auriculopalpebral n.
Draws scutiform
cartilages medially
M. frontoscutularis Rostral continuation of m.
interscutularis
Rostral auricular
branches of the
auriculopalpebral n.
Draws the scutiform
cartilages
rostromedially
M.
scutuloauricularis
superficialis
Rostral auricular
branches of the
auriculopalpebral n.
Turns the auricular
cartilage so that its
opening (conchal
fissure) faces
rostralmedially,
erects the ear
Scutiform
cartilage
Rostral border of
the auricular
cartilage
Muscle
Origin
Insertion
Innervation
M.
paratidoauricularis
Parotid fascia and
superficial fascia of
cranial neck
Ventrolateral at
Cervical branch (
the base of the
R. colli) of the
auricular cartilage facial n.
M.
Caudal margin of
mandibuloauricularis the ramus of the
mandible ventral to
the condyle
Ventral at the
Caudal auricular
base of the
n., branch of the
auricular cartilage facial n.
Function
Draws the ear
down, lays the
ear ‘back’
Muscle
Origin
Insertion
Innervation
Function
Closed, sphincter-like muscle at the
border of the rima oris; there is no
skeletal attachment
Crossing fibers that pass in the cheek
region between the maxilla and the
body of the mandible; extends from the
angle of the mouth to the level of the
rostral border of the masseter m.;
interwoven rostrally with orbicularis oris
fibers
Dorsal and ventral
buccal branches of
the facial n.
Dorsal and ventral
buccal branches of
the facial n.
Closes the rima oris (
opening of the
mouth)
Forms the lateral
boundary of the oral
cavity; compresses
the vestibule of the
oral cavity, pressing
the food into the oral
cavity proper;
compresses the
buccal glands
Scutiform cartilage Radiates into the
orbicularis oris at
the angle of the
mouth
Dorsal and ventral
buccal branches of
the facial n.
Draws the angle of
the mouth caudally;
draws the scutiform
cartilage
rostroventrally
Muscles of the lips and cheeks
M. orbicularis oris
M. buccinator
M. zygomaticus
Muscles
Origin
M. caninus
Maxilla, ventral to Upper lip
the infraorbital
foramen
Maxilla, rostral to Wing of the
the infraorbital
nostril; upper lip
foramen
M. levator labii
superoris
Insertion
Innervation
Function
Dorsal and ventral
buccal branches
of the facial n.
Dorsal and ventral
buccal branches
of the facial n.
Draws the upper
lip caudodorsally
Elevates the
upper lip and the
nasal plane and
draws them
caudally, widens
the opening of
the nostril
Muscles of the eyelids and nose
M. orbicularis
oculi
A muscular ring passing within the
Auriculopalpebral Narrowing and
eyelids. It arises dorsally and ventrally n., branch of the closure of the
from the medial palpebral ligament
facial n.
palpebral fissure
and encircles the palpebral fissure
( the opening
between the
eyelids
Muscles
Origin
Insertion
Innervation
M. retractor
anguli oculi
Deep temporal
fascia
Lateral angle of
the eye
M. levator anguli
oculi
Fascia upon the
frontal bone (
frontal fascia)
Auriculopalpebral
n., branch of the
facial n.
Auriculopalpebral
n., branch of the
facial n.
M. levator
nasolabialis
Maxilla in the
region of the
medial angle of
the eye; frontal
fascia
Deep fascia of the Lower eyelid
face
M. malaris
Function
Draws the lateral
angle of the eye
caudally
Medially into the
Elevates the
upper eyelid
medial part of the
upper eyelid;
erects the tactile
hairs
Lateral nostril and Auriculopalpebral Widens the
upper lip
n., branch of the opening of the
facial n.
nostril and raises
the upper lip
Auriculopalpebral Draws the lower
n., branch of the eyelid ventrally
facial n.
Muscles
Origin
Mandibular muscles
Superficial muscles of the throat
M. digastricus
Paracondylar
process ( the
jugular process
forms its base)
M. mylohyoideus
Mylohyoid line on
the medial
surface of the
body of the
mandible
Insertion
Innervation
Function
Ventral margin of
the mandible
Ramus
digastricus,
branch of the
facial n. ( caudal
belly); mylohyoid
n., branch of the
mandibular n.
(rostral belly)
N. mylohyoideus,
branch of the
mandubular n.
Lowers the
mandible,
opening the
mouth
Median raphe
joining the
muscles of the
two sides ventral
to the
geniohyoideus m.
Elevates the
tongue, presses it
against the palate
Muscles
Origin
Insertion
Innervation
Function
Masticatory n.,
branch of the
mandibular n.
Masticatory n.,
branch of the
mandibular n.
Raises the
mandible
External muscles of mastication
M. temporalis
Temporal fossa
Coronoid process
of the mandible
M. masseter
Zygomatic arch
Masseteric fossa
of the mandible
Raises the
mandible
Internal muscles of mastication
M. pterygoideus
M. pterygoideus
medialis
M. pterygoideus
lateralis
Pterygopalatine
fossa(medial
pterygoid); wing
og the
basisphenoid
(lateral pterygoid)
Pterygoid fossa of Pterygoid nn.,
the
branches of the
mandible(medial mandibular n.
pterygoid),
pterygoid fovea of
the mandible (
lateral pterygoid)
Synergist of the
masseter m.,
raising the
mandible;with
unilateral
contraction,
draws the
mandible toward
the side of the
muscle acting
Canine anatomy
Thoracic limb
NUR AINSYAH NATASYA BINTI ABDUL AZIZ
D10A027
(ye..saya la yang paling cute)
 Flexor=ms on the side of the limb towards which the joint
bends
 biceps brachii m. flexes the elbow.
 Extensor=the ms on the opposite side.
 triceps brachii m.=extensor of the elbow
 Adductors-ms that tend to pull a limb toward the median




plane
Abductors=ms that tend to move the limb away from the
median plane
Agonists(prime movers)are ms directly responsible for
producing the desired action.
The Antagonists are ms that oppose the desired actions.
Synergists are ms that oppose any undesired action of the
agonists
 Eg. in extension of the elbow, a movt. produced by the triceps
brachii biceps(agonist for extension), brachii and brachialis are
antagonists coz they produce the opposite action, flexion of the
elbow.
Muscle
Function
Deltoideus m.
Origin
Insertion
Innervation
Flexes shoulder • spine of
scapula
• Caudal
boarder of
scapula
Deltoid
tuberosity of
humerus
Axillary n.
Teres minor m.
Flexes shoulder Distal half of
caudal boarder
of scapula
Deltoid
tuberosity of
humerus
Axillary n.
Teres major m.
Flexes shoulder Caudal boarder
of scapula and
subscapularis
Teres tuberosity
of humerus
Axillary n.
Subscapularis m.
Extends
shoulder
Lesser
tuberosity of
humerus
Axillary n.
Subscapular n.
Subscapular
fossa of scapula
Muscle
Function
Coracobrachialis m. Extends
shoulder
Origin
Insertion
Innervation
Coracoid
process of
scapula
Proximomedial
surface of
humerus
Musculocutane
ous n.
Musculocutane
ous n.
Biceps brachii m.
• Extend
shoulder
• Flexes
elbow
• Stabilize
carpus
Supraglenoid
tubercle
• Radial
tuberosity
• Tendon of
extensor
carpi radialis
m.
Brachialis m.
Flexes elbow
Proximocaudal
surface of
humerus
Proximomedial Musculocutane
surface of radius ous n.
Supraspinat • Extends • Supraspi
us m.
shoulder
natous
• Stabilize
fossa
shoulder • Scapular
cartilage
and
spine
Infraspinat
us m.
Extends
and flexes
shoulder
Greater and Suprascapu
lesser
lar n.
tubercles of
humerus
• Infraspin Greater
atous
tubercle of
fossa
humerus
• Scapular
cartilage
and
spine
Suprascapu
lar n.
Muscle
Function
Origin
Insertion
Innervation
Triceps brachii m.
Long head
Extends elbow
and flexes
shoulder
Caudal boarder Olecranon
of scapula
tuber
Lateral head
Extends elbow
Deltoid
tuberosity
Medial head
Anconeus m.
Radial n.
Middle surface
of middle 1/3
of humerus
• Extend
elbow
• Raise joint
capsule
(prevent
capsule
compression
during elbow
extension
Boarder of
olecranon
fossa
Lateral
olecranon
Radial n.
Muscle
Function
Origin
Tensor fascia
antebrachii m.
• Extends
elbow
• Tenses
forearm
Caudal boarder Deep fascia of
of scapula
forearm and
olecranon
common
• Extend
digital extensor
carpus
m.
• Extends
digit III
Lateral digital
extensor m.
Lateral
epicondyle of
humerus
Insertion
Innervation
Radial n.
• Proximodor Radial n.
sal on
proximal
phalanx
• Extensor
processes of
middle and
distal
phalanges
Extends
Proximal
Proximodorsal
metacarpophal radius and ulna on proximal
anges joint
phalanx
(fetlock)
Radial n.
Muscle
Function
Origin
Insertion
innervation
extensor carpi
radialis m.
extends the
carpal, pastern
And coffin
joint.
lateral
Proximodorsal deep branch of
supracondylar metacarpal III
the radial n.
of the humerus bone (metacarpal
of the index finger).
accessory
carpal bone
Ulnaris
lateralis m.
flexes carpus
Lateral
epicondyle of
humerus
• Accessory
carpal bone
• Metacarpal
IV (lateral
Radial n.
splint bone)
Extensor carpi
obliquus m.
Extends carpus Middle of
radius
(abductor pollicis
craniolaterally
longus m.)
Proximal
metacarpal II
Radial n.
Muscle
Function
Origin
Insertion
Innervation
flexor carpi
radialis m
Flexes carpus
Medial
Epicondyle of
Humerus
Proximal
Sesamoid
Bones
Median n.
flexor carpi
ulnaris m.
(ulnar &
humeral
heads)
Flexes carpus
• Medial
Epicondyle
of Humerus
• Medial
Olecranon
Accessory
Carpal Bone
Ulnar n.
superficial
digital flexor
m.
Extends elbow Medial
Flexes carpus Epicondyle of
Flexes digit
Humerus
• Distal
Ulnar n.
Collateral
Tubercles of
Proximal
Phalanx
• Proximal
Collateral
Tubercles of
Middle
Phalanx
Muscle
Function
Origin
Insertion
Innervation
Flexor Surface
of
Distal Phalanx
Median n.
&
Ulnar n.
deep digital flexor m.
Humeral head
Extends elbow Medial
Epicondyle of
Humerus
Ulnal head
Flexes carpus
Radial head
Flexes digit
Interosseous
Medial
Olecranon
Ulnar n.
Middle of
Radius, Caudal
Surface
Median n.
Resist
• Proximocau
overextension
dal on
of
metacarpal
metacarpophal
III
angeal joint
• Palmer
carpal
ligament
Proximal
Deep branch of
Sesamoid bone ulnar n.
• extensor carpi radialis m. (1)
• common digital extensor m. (2)
• lateral digital extensor m. (3).
• ulnaris lateralis m. (4)
Two minor muscles are the
• brachioradialis m. (5)
• abductor pollicis longus m. (6).
Fascia has been removed except for the extensor retinaculum (7) that binds digital
extensor tendons at the carpus. (Scissors elevate branches of the common digital
extensor tendon.)
• common digital extensor m. (1)
• lateral digital extensor m. (2)
(tendon are elevated by forceps)
• extensor carpi radialis m. (3)
• ulnaris lateralis m. (4)
Craniolateral antebrachial muscles originate form the vicinity of the lateral epicondyle of the
humerus (asterisk).
• anconeus m. (5), caudal to the epicondyle.
medial epicondyle of the humerus (asterisk).
deep fascia has been removed from the antebrachium except for flexor
retinaculum (1), which binds digital flexor tendons in the carpus.
superficial digital flexor m. (2)
and its tendon branches are elevated by instruments.
flexor carpi ulnaris m. (arrows).
•
•
•
•
superficial digital flexor m. (1)have been reflected.
flexor carpi ulnaris m. (2) has humeral and ulnar heads. Latter elevated by the forceps.
flexor carpi radialis m. (3) is medially on the limb.
deep digital flexor m. (4) it’s tendons are visible distal to the flexor retinaculum (5).
• deep digital flexor m (1) it’s humeral head is being pulled by forceps. small radial head (2) attaches to
the radius. The ulnar head (3) originates from the ulna. deep layer of flexor retinaculum (asterisk) has been cut
to release the tendon (arrow) of the deep digital flexor m.
•
•
•
•
superficial digital flexor m. (4);
flexor carpi ulnaris m. (5);
flexor carpi radialis m. (6);
and pronator teres m. (7).
MUSCLE
ORIGIN
INSERTION
INNERVATION
FUNCTION
Middle
Gluteal
Gluteal fascia
and wing of
the ileum
Trochanter
major
Cranial gluteal
nerve
draws the limb
caudally and
outward
Superficial
Gluteal
Gluteal
fascia,lateral
part ofsacrum
Gluteal
tuberosity
Caudal gluteal
nerve
draws the limb
caudally
Tensor Fascia
Latae
Tuber coxae
Patella and
tibia
tuberosity by
way of the
fascia lata and
patella
ligament
Cranial gluteal
nerve
draw the limb
forward toward
cranial
MUSCLE
ORIGIN
INSERTION
INNERVATION
FUNCTION
Sartorial
Tuber
coxae,iliac
crest
Crural
fascia,cranial
margin of tibia
Femoral nerve
draw the limb
forward and
adduct the
limb
Semimembran Tuber
eous
ischiadicum
Medial
condyle of the
femur and
tibia
Muscular
branch of the
ischidia nerve
Draw the limb
medially and
caudally and
tend to rotate
the crus
Femoral biceps Tuber
ischiadium,
sacrotuberous
ligament
Patella and
tibia
tuberosity,
cranial margin
of the tibia
Muscular
Attachment to
branch of the the cranial
ischiadic nerve margin of the
tibia flexes
MUSCLE
ORIGIN
INSERTION
INNERVATION
FUNCTION
Middle
Gluteal
Gluteal fascia
and wing of
the ileum
Trochanter
major
Cranial gluteal
nerve
draws the limb
caudally and
outward
Superficial
Gluteal
Gluteal
fascia,lateral
part ofsacrum
Gluteal
tuberosity
Caudal gluteal
nerve
draws the limb
caudally
Tensor Fascia
Latae
Tuber coxae
Patella and
tibia
tuberosity by
way of the
fascia lata and
patella
ligament
Cranial gluteal
nerve
draw the limb
forward toward
cranial
MUSCLE
ORIGIN
INSERTION
INNERVATION FUNCTION
Coccygeal
Ischiadic
spine
Transverse
process of
first four
caudal
vertebrae
Ventral
branch of the
third sacral
spinal nerve
Draw the tail
to the side of
muscle acting
with both
muscle
contracting
Femoral
quariceps
Craniolateral
and
craniomedial
at the femur
Tibial
tuberosity by
mean of the
patella
ligament
Femoral
nerve
Main
extensor of
the stiffle
joint,fixation
of the limb
Femoral
quadrate
Ventromedial
surface of the
ischium near
tuber
Caudal
surface of
femur distal
to the
trochanteric
fossa
Ischiadic
nerve
Rotates the
limb,turning
its cranial face
laterally
MUSCLE
ORIGIN
INSERTION
INNERVATION
FUNCTION
Semitendenou Tuber
s
ischiadicum
Medial surface Muscular
of the tibia
branch of the
ischidia nerve
Draw the limbs
medially and caudally
and tend to rotate
the crust turning its
cranial face medially
Semimembran Tuber
ous
ischiadicum
Medial
condyle of the
femur and
tibia
Muscular
branch of the
ischidia nerve
Draw the limb
medially and caudally
and tend to rotate
the crus
turning its cranial
face medially
Gastrocnemius Distal
femur,medial
and lateral
supracondyles
tuberosity
Tuber calcanei
Tibial nerve
Extensor of tarsal
joint,flexor of stiffle
joint
MUSCLE
ORIGIN
INSERTION
Deep digital
flexor
Lateral
condyle of
femur
Caudal aspect
of proximal
tibia
Long fibular
Long digital
flexor
INNERVATION FUNCTION
Flexes the
stifle and
rotate then
leg medially
MUSCLE
ORIGIN
INSERTION INNERVATI FUNCTION
ON
sartorial
Tuber
coxae,iliac
crest
Crural
Femoral
fascia,crani nerve
al margin
of tibia
draw the
limb
forward
and
adduct the
limb
Ventral
pubic
tubercle
Proximally
on the
facies
aspera
Adductor
Cranial
tibial
adductor
Obturator
nerve
The largest of the hamstring (caudal thigh) muscles is the biceps femoris m. (1)
which originates from the ischium and inserts broadly on fascia lata (2) and
crural fascia (3). The muscle has been transected in two locations to facilitate
reflecting it. The semitendinosus m. (4) is partially exposed.
Other visible (non-hamstring) muscles include: sartorius m. (5), tensor fasciae
latae m. (6), middle gluteal m. (7), superficial gluteal m. (8), levator ani m. (9),
and external anal sphincter m.(10).
Cutaneous muscle and major fasciae
of the canine
Muscle
origin
M. Platysma
M. Cutaneus
omobrachialis
insertion
innervation
function
Arise from the dorsal median raphe
of the neck, passing rostroventrally
onto the face where as the
M.cutaneous faciei, it radiates into
the M.orbicularis oris of the upper &
lower lips
R. Platysmatis of
the caudal
auricular n.,
cervical branch
(R.colli) of the
facial n.
Tenses & moves
the skin in the
nuchal &
masseteric
regions, retracts
the angle of the
mouth, tenses
the skin in the
labial region
From the supf.
Shoulder fascia
opposite the scapula
Intercostobrachial
n.
Tightens &
moves the skin
over the
shoulder
Over the
elbow joint
Muscle
origin
insertion
innervation
function
M. Cutaneus
trunci
From the superficial
trunk fascia roughly
along a line from the
withers to the fold of
the flank
Opposite the
Lateral throcic & Tightens &
dorsal two
intercostobrachia moves the skin of
thirds of the
l nn.
the trunk
scapula: blend
with the supf.
Shoulder
fascia ;
Opposite the
ventral third of
the scapula,
end with deep
pectoral
muscle on
medial surface
of humerus
Superficial muscle of the canine
muscle
origin
insertion
innervation
Sternohyoideus
Manubrium of
sternum & 1st
costal cartilage
Lingual process
of basihyoid
bone
(basihyoiduem)
Ventral branch of Retract basihyoid
1st cervical n.
& tounge
caudally
sternocephalic
Manubrium
sterni
Caudal border of
mandible
Ventral br. of
accessory n (XI)
Opens mouth;
flexes or inclines
head and neck to
the side of the
muscledorsal
median raphe
M.
Cleidocervicalis
Dorsal median
Clavicular
raphe of the neck intersection
cranial to
trapezius
Dorsal branch of
accessory n. (XI)
Draw the
thoracic limb
forward.
M.Omo
transversarius
Acromion of
scapula
Ventral branch of Draws thoracic
fourth cervical n. limb forward,
bends neck to
one side.
Wing of atlas
function
muscle
origin
insertion
innervation
Functions
M. cleidobrachialis
Clavicular
intersection
(clavicular part),
spine of scapula by
aponeurosis (scapula
part), acromion
(acromial part)
Humeral crest
(clavicular part),
deltoid
tuberosity
(scapular &
acromial parts)
Axillary n. (scapular
& acromial parts),
accessory axillary
n. (clavicular part),
this neve may also
be called the n.
brachiocephalicus
Scapula & acromial
parts, flexor of the
shoulder joint,
clavicular part, as a
part of the
brachiocephalicus
m., draws the limb
forward
M. Trapezius
Dorsal median raphe
od the neck from the
3rd cervical vertebra
to the spinous
processes of thoracic
vertebrae 1-9
Cervical part :
dorsal two third
of the scapular
spine
Thoracic part:
dorsal third of
the scapular
spine
Dorsal branch of
accessory n.
Acting together, draw
the scapula dorsally.
Cervical part: draw
the scapula
craniodorsally .
Thoracic part: draw
the scapula
caudodorsally.
Major teres
Caudal margin of the
scapula
Teres major
tuberosity
Axillary n.
Flexor of shoulder
joint
M. Latissium dorsi
Thoracolumbar fascia
Teres major
tuberosity with
the m. teres
major tendon
Thoracodorsal n.
Draw the thoracic
limb caudally; flexor
of shoulder joint;
with limb fixed,
draws the trunk
forward
muscle
origin
insertion
innervation
Functions
M. Obliquus
externus
abdominis
Ribs 4-13 (costal part),
thoracolumbar fascia
(lumbar part)
Linea
alba(abdominal
tendon); inguinal
ligament, from the
tuber coxae to the
iliopubic eminence
& pecten ossis
pubis (pelvic
tendon)
Ventral branches of
intercostal,
costoabdominal &
lumbar nn.
Ventral abdominal
muscles support the
ventral abdominal
wall. They function
with the diaphragm
in reciprocal
movement of
abdominal
respiration:
inspiration
M. Obliquus
internus
abdominis
Tuber coxae &
neighboring part of the
inguinal ligament
(inguinal part),
thoracolumbar fascia
(lumbar part)
Linea alba & costal
arch
Ventral branches of
intercostal,
costoabdominal &
lumbar nn
M. sartorius
Tuber coxae, iliac crest
Crural fascia,
cranial margin of
fibia
Femoral n.
Flexor of the hip
joint, external of the
stifle joint (cranial
part), flexor of the
stifle joint (caudal
part) acting together
two part of muscle
draw limb forward &
adduct the limb
muscle
origin
insertion
Deep pectoral
muscle
Sternum; distally
on ribs 4-9; tunica
flava abdominis
Major & minor
Cranial &
Suspends trunk
tubercles of
caudal pectoral between
humerus; tendon nn.
forelimbs; retracts
of origin of
limb; stabilizes
coracobrachialis
shoulder joint
Sacrocaudalis
Between spinous &
dorsalis medialis mamillary
processes of the
last 2-3 sacral & 1st
several caudal
vertebrae
M.
Rhomboideus
- Cervicis
- thoracic
Nuchal crest
(captial part) ,
dorsal median
raphe of the neck
from second
cervical to 1st
thoracic vertebrae
(cervical part),
cranial thoracic
spines (thoracic
part)
innervation
Dorsal brr. of
local spinal nn.
Medial surface of Ventral
scapular cartilage branches of
cervical nerves
Functions
Elevates tail &
bends it laterally
Fixation of thoracic
limb, elevates
scapula & draws it
forward.
Deep muscle of the canine
muscle
origin
M. splenius
Spinous
Nuchal crest
processes of vT1vT3
M.Iliocostalis
Ilium (lumbar
part), several
adjacent ribs
beginning several
segments caudal
to rib of insertion
& transverse
process of vC7(6)
(thoracic part)
-lumborum
-thoracis
insertion
Transverse
processes of
lumbar vertebrae
& caudal ribs
(lumbar part);
caudal margin of
ribs several
segments cranial
to ribs of origin &
transverse
process of vc7(6)
(thoracic part)
innervation
function
Dorsal branches
of cervical &
thoracic nn.
Extension &
lateral flexion of
head & neck
Fixation of
lumbar vertebrae
& ribs, erection &
lateral flexion of
vertebral column
(lumbar part);
draws ribs
caudally in
expiration ,
attachment to
transverse
process of vC7(6)
draw
corresponding
ribs cranially in
inspiration
(thoracic part)
muscle
origin
insertion
innervation
M. Spinalis &
Lumbar spinous &
semispinalis
mamillary
thoracic et cervicis processes
(thoracic spinalis
& semispinalis ),
cranial thoracic
spinous processes
(cervical spinalis)
Spinous processes
of cranial thoracic
vertebrae
(thoracic spinalis
& semispinalis )
spinous processes
of cervical
vertebrae up to
the axis. (cervical
spinalis)
Dorsal branches of Fixation of dorsum
lumbar, thoracic & & neck bends the
cervical spinal nn. trunk & neck to
the side of the
muscle acting
M. Serratus
dorsalis cranialis
Supraspinous
ligament at the
level of thoracic
vertebrae 1-8
Cranial margin of
ribs 3-10
Intercostal nn.
M. Rectus
(Straight)
abdominis
Sternum & first rib Pecten ossis pubis
(including its
costal cartilage)
Ventral branches
of intercostal,
costoabdominal &
lumbar nn.
function
inspiratory
muscle
origin
insertion
innervation
function
M. Transversus
abdominis
Asternal ribs (costal
part) lumbar
transverse
processes & deep
leaf of the
thoracolumbar
fascia (lumbar part)
Linea alba
Ventral branches of
intercostal,
costabdominal &
lumbar nn.
M. Serratus
ventralis
-Cervicis
- thoracis
Transverse
processes of
cervical vertebrae
2-7 (cervical part),
rib 1-7 (10)
Facies serrata of
scapula
Ventral branches of
cervical nn.
(cervical part), long
thoracic n. (thoracic
part)
Most important
muscle supporting
trunk, raises neck;
whn thoracic limb
is fixed, an auxiliary
inspiratory muscle
Mm. Intercostales
externi
From the caudal
margin of the more
cranial rib of the
intercostal space
Extends
caudoventrally to
the cranial margin
of the more caudal
rib of the space
Intercostal nn.
inspiratory
muscle
origin
insertion
innervation
function
M. Rhomboideus
- Cervicis
- thoracic
- capitis
Nuchal crest
(captial part) ,
dorsal median
raphe of the neck
from second
cervical to 1st
thoracic vertebrae
(cervical part),
cranial thoracic
spines (thoracic
part)
Medial surface of Ventral branches Fixation of
scapular cartilage of cervical nerves thoracic limb,
elevates scapula
& draws it
forward.
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