Ch 11 quiz

Question 1

What does the name flexor carpi radialis longus tell you about this muscle?

a. its size
b. its action
c. its location
d. all of the above

Answer 1

d. all of the above

Question 2

Which facial muscle would you expect to be well developed in a trumpet player?

a. masseter muscle
b. buccinator muscle
c. zygomaticus major and minor
d. orbicularis oris

Answer 2

b. buccinator muscle

Question 3

Which muscle are you using when you shrug your shoulders?

a. trapezius muscle
b. supraspinatus
c. deltoid muscles
d. sternocleidomastoid muscles

Answer 3

a. trapezius muscle

Question 4

The term _____ means muscle fascicles that run straight while the term _____means the fascicles run at a slant.

a. transverse; rectus
b. rectus; oblique
c. lateral; transverse
d. orbicularis; oblique

Answer 4

b. rectus; oblique

Question 5

What specific facts can you tell me about the extensor carpi radialis longus, even if you don’t know the muscle? It is a muscle that:

a. flexes at a joint, probably moves the wrist joint, and is long.
b. extends a joint, probably moves the wrist into abduction, and is long.
c. extends a joint, probably moves the wrist into adduction, and is long.
d. extends a joint, abducts at a joint, probably moves the fingers.

Answer 5

b. extends a joint, probably moves the wrist into abduction, and is long.

Question 6

Which muscle is paired correctly with its fascicle arrangement?

a. biceps brachii / parallel
b. rectus femoris / unipennate
c. pectoralis major / multipennate
d. orbicularis oris / unipennate

Answer 6

a. biceps brachii / parallel

Question 7

The joint between the occipital bone of the skull and the first cervical vertebra (atlas) is part of which type of lever system?

a. first-class lever system
b. second-class lever system
c. third-class lever system
d. fulcrum/load/applied force lever system

Answer 7

a. first-class lever system

Question 8

Which type of fascicle arrangement is typical of muscles guarding the opening to the anus and surrounding the eye?

a. convergent muscle
b. multipennate muscle
c. parallel muscle
d. circular muscle (sphincter)

Answer 8

d. circular muscle (sphincter)

Question 9

What statement below would be true with regard to muscle lever systems?

a. Not every muscle operates as part of a lever system.
b. A third-class lever is the most common lever system in the body.
c. Plantar flexion by a large calf muscle involves a first-class lever system.
d. Both A and B are true.

Answer 9

d. Both A and B are true.

Question 10

The benefit of third-class lever systems in muscles is that ______, while the benefit of second-class levers in muscles is ______.

a. they operate at a mechanical advantage; they operate at a mechanical disadvantage
b. speed and distance traveled are increased; a small force can move a heavy weight
c. the fulcrum lies between the applied force and the load; the load lies between the applied force and the fulcrum
d. none of the above

Answer 10

b. speed and distance traveled are increased; a small force can move a heavy weight

Question 11

Why can swallowing help alleviate the pressure sensations at the eardrum (tympanic membrane) when you are in an airplane that is changing altitude?

a. It prevents movement of the uvula.
b. It causes a shift in inner ear structures.
c. It moves the eardrum (tympanic membrane).
d. It enlarges the auditory tube
opening.

Answer 11

d. It enlarges the auditory tube

opening.

Question 12

Muscle A abducts the humerus, and muscle B adducts the humerus. What is the relationship between these two muscles?

a. synergists
b. antagonists
c. agonists
d. fixators

Answer 12

b. antagonists

Question 13

Which of the following is true about origins and insertions of skeletal muscles?

a. The position of the origin and insertion is based on the anatomical position.
b. If a muscle extends from a broad aponeurosis and then to a narrow tendon, the aponeurosis is the origin.
c. If the muscle has several tendons at one end and a single tendon at the other end, then the single tendon end is the insertion.
d. All statements above are true.

Answer 13

d. All statements above are true

Question 14

A muscle that assists another in a movement is a ______, and an example is the relationship between the _____ and ______.

a. synergist; latissimus dorsi; teres major
b. antagonist; gracilis; sartorius
c. prime mover; brachioradialis; biceps brachii
d. fixator; gastrocnemius; tibialis
anterior

Answer 14

a. synergist; latissimus dorsi; teres major

Question 15

The action of the gluteus maximus muscle is ______, and it has a common insertion with ____ at the ______.

a. flexion and medial rotation at the hip; gluteus medius; greater trochanter
b. extension and lateral rotation at the hip; tensor fasciae latae; iliotibial tract
c. adduction at the thigh; adductor magnus; linea aspera of the femur
d. none of the above

Answer 15

b. extension and lateral rotation at the hip; tensor fasciae latae; iliotibial tract

Question 16

Damage to the external intercostal muscles would interfere with what important process?

a. standing upright
b. walking
c. breathing
d. digesting

Answer 16

c. breathing

Question 17

If someone hit you in your rectus abdominis muscle, how would your body position change?

a. You would lean to the right.
b. You would bend backward.
c. You would double over.
d. You would twist to the left.

Answer 17

c. You would double over

Question 18

After spending an afternoon carrying heavy boxes from his basement to his attic, Joe complains that the muscles in his back hurt. Which axial muscle(s) is (are) most likely sore?

a. erector spinae
b. latissimus dorsi
c. trapezius
d. both A and B

Answer 18

a. erector spinae

Question 19

Which muscle would be the prime mover for dorsiflexion at the ankle?

a. gastrocnemius
b. tibialis posterior
c. soleus
d. tibialis anterior

Answer 19

d. tibialis anterior

Question 20

The rotator cuff is formed from ______ muscles and is commonly injured by _______.

a. rhomboid major and minor muscles and teres major and minor muscles; piano players
b. teres major, teres minor, and serratus anterior; golfers
c. rectus femoris, vastus lateralis, vastus intermedius, and vastus medialis; quarterbacks
d. supraspinatus, infraspinatus, subscapularis, and teres minor; baseball pitchers

Answer 20

d. supraspinatus, infraspinatus, subscapularis, and teres minor muscles; baseball pitchers

Question 21

If you were contracting and relaxing your masseter muscle, what would you probably be doing?

a. chewing
b. kissing
c. nodding
d. smiling

Answer 21

a. chewing

Question 22

Which leg movement would be impaired by injury to the gluteus medius muscle?

a. flexion at the hip
b. adduction at the hip
c. abduction at the hip
d. lateral rotation at the hip

Answer 22

c. abduction at the hip

Question 23

Which two movements would injury to the flexor carpi ulnaris muscle impair?

a. flexion and abduction
b. flexion and extension
c. flexion and adduction
d. flexion and circumduction

Answer 23

c. flexion and adduction

Question 24

You often hear of athletes who suffer a pulled “hamstring.” To what does this phrase refer?

a. biceps femoris, gracilis, and adductor magnus damage
b. rectus femoris, vastus lateralis, and vastus medialis damage
c. sartorius, gracilis, and rectus femoris damage
d. semitendinosus, biceps femoris, and semimembranosus muscle damage

Answer 24

d. semitendinosus, biceps femoris, and semimembranosus muscle damage

Question 25

Once an individual reaches an age of approximately 65 years old, several factors can compromise their ability to exercise. Which of the following factors would play a role in this?

a. Skeletal muscles have increased amounts of fibrous tissue.
b. Blood flow increases to skeletal muscle to compensate for changes in the cardiovascular system.
c. The thermoregulatory centers keep the elderly cooler so it is easier for them to do sustained activity.
d. There is an increase in the size of
satellite cells as we age.

Answer 25

a. Skeletal muscles have increased amounts of fibrous tissue.

Question 26

Why is the sternocleidomastoid considered an axial muscle, while the serratus anterior is considered an appendicular muscle?

a. The sternocleidomastoid has both insertions on the axial skeleton, and the serratus anterior has only its origin on the axial skeleton.
b. The action of the sternocleidomastoid is on the axial skeleton, and the action of the serratus anterior is on the appendicular skeleton.
c. The serratus anterior has its insertion on the appendicular skeleton, and the sternocleidomastoid’s insertion on the clavicle is not considered.
d. B and C are correct.

Answer 26

b. The action of the sternocleidomastoid is on the axial skeleton, and the action of the serratus anterior is on the appendicular skeleton.