Chapter 11

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Which muscle is paired correctly with its
fascicle arrangement?
1.
2.
3.
4.
extensor digitorum/parallel
biceps brachii/bipennate
pectoralis major/convergent
orbicularis oris/unipennate
A muscle with multipennate fibers would have
___ when compared to a similarly sized
muscle with parallel fibers?
1.
2.
3.
4.
less range of motion and be weaker
the same range of motion, larger fibers, and contract
more slowly
more fibers, shorten very little, and be more powerful
longer fibers, a longer range of motion, and attach
obliquely to a central tendon
Which type of fascicle arrangement is
typical of muscles guarding the opening to
the anus and surrounding the eye?
1.
2.
3.
4.
convergent muscle
multipennate muscle
parallel muscle
circular muscle (sphincter)
The joint between the occipital bone of the
skull and the first cervical vertebra (atlas) is
part of which type of lever system?
1.
2.
3.
4.
first-class lever system
second-class lever system
third-class lever system
fulcrum/load/applied force lever system
The benefit of third-class lever systems in
muscles is that ___, while the benefit of
second-class levers in muscles is ___?
1.
2.
3.
4.
they operate at a mechanical advantage/they
operate at a mechanical disadvantage
speed and distance traveled are increased/a
small force can move a heavy weight
the fulcrum lies between the applied force and
the load/the load lies between the applied force
and the fulcrum
None of the above
Which of the following is true about origins and
insertions of skeletal muscles?
1. The fixed end of a muscle is its insertion.
2. The origin is typically distal or lateral to
the insertion.
3. During contraction, the insertion moves
toward the origin.
4. A muscle with a broad aponeurosis on
one end does not have a true origin.
Muscle A abducts the humerus, and muscle
B adducts the humerus.
What is the relationship between
these two muscles?
1.
2.
3.
4.
synergists
antagonists
agonists
fixators
A muscle that assists another in a movement is
a ____ and an example is the relationship
between the ___ and ___.
1.
2.
3.
4.
synergist/latissimus dorsi/teres major
antagonist/gracilis/sartorius
prime mover/brachioradialis/biceps brachii
fixator/gastrocnemius/tibialis anterior
What does the name flexor carpi radialis
longus tell you about this muscle?
1.
2.
3.
4.
its size
its action
its location
1, 2, and 3 are correct
What specific facts can you tell me about the
extensor digitorum longus, even if you don’t
know the muscle? It is a muscle that….?
1.
2.
3.
4.
flexes at a joint, probably moves the elbow joint,
and it is short.
extends at a joint, probably moves the knee joint,
and it is feather-like.
extends at a joint, probably moves a finger or toe
joint, and it is long.
abducts at a joint, probably moves the hip joint, and
it is large.
Which of these groupings of muscles
includes only axial muscles?
1. orbicularis oculi, zygomaticus, trapezius,
temporalis
2. masseter, sternocleidomastoid,
buccinator, erector spinae
3. quadratus lumborum, scalene muscles,
rectus abdominis
4. 2 and 3 are correct
If you were contracting and relaxing your
masseter muscle, what would you probably
be doing?
1.
2.
3.
4.
chewing
kissing
nodding
smiling
Which facial muscle would you expect to
be well developed in a trumpet player?
1.
2.
3.
4.
masseter muscle
buccinator muscle
zygomaticus major and minor
orbicularis oris
Why can swallowing help alleviate the pressure
sensations at the eardrum (tympanic membrane)
when you are in an airplane that is changing
altitude?
1. It prevents movement of the uvula.
2. It causes a shift in inner ear structures.
3. It moves the eardrum (tympanic
membrane).
4. It enlarges the auditory tube opening.
Damage to the external intercostal muscles
would interfere with what important process?
1.
2.
3.
4.
standing upright
walking
breathing
digesting
If someone hit you in your rectus
abdominis muscle, how would your body
position change?
1.
2.
3.
4.
You would lean to the right.
You would bend backward.
You would double over.
You would twist to the left.
After spending an afternoon carrying heavy boxes
from his basement to his attic, Joe complains that
the muscles in his back hurt. Which muscle(s)
is/are most likely sore?
1.
2.
3.
4.
erector spinae muscles
latissimus dorsi
trapezius
Both 1 and 2
Which muscle are you using when you shrug
your shoulders?
1.
2.
3.
4.
trapezius muscles
levator scapulae muscles
deltoid muscles
sternocleidomastoid muscles
The rotator cuff is formed from ___ muscles and is
commonly injured by __.
1.
2.
3.
4.
rhomboid major and minor, teres major and
minor muscles/piano players
teres major, teres minor and serratus anterior
muscles/golfers
rectus femoris, vastus lateralis, vastus
intermedius, and vastus
medialis/quarterbacks
supraspinatus, infraspinatus, subscapularis,
and teres minor muscles/baseball pitchers
Which two movements would injury to the
flexor carpi ulnaris muscle impair?
1.
2.
3.
4.
flexion and abduction of the fingers
flexion and extension of the wrist
flexion and adduction of the wrist
flexion and circumduction of the fingers
The action of the gluteus maximus muscle is to __
and it has a common insertion with __ at the ___.
1. flexion and medial rotation at the
hip/gluteus medius/greater trochanter
2. extension and lateral rotation at the
hip/tensor fasciae latae/iliotibial tract
3. adduction at the thigh/adductor
magnus/linea aspera of the femur
4. None of these
Which thigh movement would be impaired
by injury to the obturator muscle?
1.
2.
3.
4.
flexion at the hip
adduction at the hip
medial rotation at the hip
lateral rotation at the hip
Athletes occasionally suffer a “pulled hamstring”.
This phrase refers to damage to which muscles?
1.
2.
3.
4.
biceps femoris, gracilis, and adductor magnus
rectus femoris, vastus lateralis and vastus medialis
sartorius, gracilis and rectus femoris
semitendinosus, biceps femoris, and
semimembranosus muscle
How would a torn calcaneal tendon affect
movement of the foot? What muscle(s) is/are the
antagonist(s) of the muscles that pull on the
calcaneal tendon?
1.
2.
3.
4.
no dorsiflexion; tibialis anterior muscle
no dorsiflexion; soleus and gastrocnemius
muscles
no plantar flexion; tibialis anterior muscle
no plantar flexion; soleus and gastrocnemius
muscles
Why is the sternocleidomastoid considered an axial
muscle, while the serratus anterior is considered an
appendicular muscle?
1.
2.
3.
4.
The sternocleidomastoid has both insertions on the
axial skeleton and the serratus anterior has its
origin on the axial skeleton.
The action of the sternocleidomastoid is on the axial
skeleton and the action of the serratus anterior is
on the appendicular skeleton.
The serratus anterior has its insertion on the
appendicular skeleton and the
sternocleidomastoid’s insertion on the clavicle is
not considered.
2 and 3 are correct.
One consequence of aging is a decrease in
diameter of skeletal muscle fibers. What factors
contribute to the decrease in size of muscle fibers?
1.
2.
3.
4.
less myoglobin and smaller reserves of glycogen
and ATP
decreasing elasticity and increasing fibrosis
rapid fatigue and decline in thermoregulatory
ability
decrease in number of satellite cells and a
decrease of 30% in aerobic performance
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