Question 1

Which statement best describes the difference between the origin and insertion of a muscle?

Accepted Answer

The origin is the less movable attachment, and the insertion is generally the more movable attachment.

Question 2

A patient is unable to flex their elbow. Which muscle is most likely impaired?

Accepted Answer

Biceps brachii

Question 3

Which muscle is the prime mover for shoulder flexion?

Accepted Answer

Pectoralis major

Question 4

If both sternocleidomastoid muscles contract simultaneously, what movement occurs?

Accepted Answer

Neck flexion

Question 5

Which muscle is responsible for plantar flexion of the ankle?

Accepted Answer

Gastrocnemius

Question 6

A person is performing a pull-up, which involves shoulder adduction. Which muscle is the prime mover for this action?

Accepted Answer

Latissimus dorsi

Question 7

Which muscle group is antagonistic to the quadriceps femoris during knee extension?

Accepted Answer

Hamstrings

Question 8

Which muscle is the most superficial of the abdominal muscles?

Accepted Answer

External oblique

Question 9

A patient presents with foot drop, an inability to dorsiflex the ankle. Which muscle is most likely affected?

Accepted Answer

Tibialis anterior

Question 10

Which muscle is the prime mover for hip extension?

Accepted Answer

Gluteus maximus

Question 11

During a bench press, which muscle acts as the prime mover for shoulder flexion?

Accepted Answer

Pectoralis major

Question 12

Which muscle is responsible for abduction of the arm at the shoulder joint?

Accepted Answer

Deltoid

Question 13

Which of the following muscles is named for its action?

Accepted Answer

Adductor longus

Question 14

A patient is unable to compress their cheeks while blowing up a balloon. Which muscle is most likely paralyzed?

Accepted Answer

Buccinator

Question 15

Which muscle group is responsible for extending the knee?

Accepted Answer

Quadriceps femoris

Question 16

Which muscle is the antagonist to the biceps brachii during elbow flexion?

Accepted Answer

Triceps brachii

Question 17

Which of the following best describes a synergist muscle?

Accepted Answer

A muscle that assists the prime mover in performing its action

Question 18

Which muscle is responsible for lateral rotation of the hip?

Accepted Answer

Gluteus maximus

Question 19

A patient with Bell's palsy is unable to close their eyelid. Which muscle is affected?

Accepted Answer

Orbicularis oculi

Question 20

Which muscle is the prime mover for trunk flexion?

Accepted Answer

Rectus abdominis

Muscle Anatomy and Function: Study Notes for Anatomy & Physiology

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