Question 1

A patient presents with difficulty elevating their eyebrows and wrinkling their forehead. Which muscle is most likely impaired?

Accepted Answer

Frontalis

Question 2

Which muscle is the prime mover for chewing and elevates the mandible?

Accepted Answer

Masseter

Question 3

A soccer player suffers a blow to the lateral side of the knee and now has difficulty flexing and medially rotating the leg at the hip. Which muscle is most likely injured?

Accepted Answer

Semitendinosus

Question 4

Which muscle is responsible for compressing the cheeks, as in blowing or sucking?

Accepted Answer

Buccinator

Question 5

During a physical exam, a patient is asked to abduct their arm at the shoulder. Which muscle is primarily responsible for this movement?

Accepted Answer

Deltoid

Question 6

Which muscle group is responsible for extending the knee and is commonly targeted in rehabilitation after ACL surgery?

Accepted Answer

Quadriceps group

Question 7

A patient is unable to flex their forearm at the elbow after an injury. Which muscle is most likely affected?

Accepted Answer

Biceps brachii

Question 8

Which muscle is the prime mover for plantar flexion of the foot at the ankle and inserts on the calcaneus via the calcaneal tendon?

Accepted Answer

Gastrocnemius

Question 9

Which of the following muscles is involved in expanding the thoracic cavity during inhalation?

Accepted Answer

Diaphragm

Question 10

A patient has difficulty adducting their arm at the shoulder. Which muscle is most likely compromised?

Accepted Answer

Latissimus dorsi

Question 11

Which muscle is responsible for flexing the wrist and abducting the hand?

Accepted Answer

Flexor carpi radialis

Question 12

Which muscle is responsible for depressing the mandible and is associated with the expression of frowning?

Accepted Answer

Platysma

Question 13

Which muscle is the prime mover for extension of the leg at the knee?

Accepted Answer

Rectus femoris

Question 14

A patient is unable to rotate their trunk to the opposite side. Which muscle is most likely impaired?

Accepted Answer

External oblique

Question 15

Which muscle is responsible for closing the eyelids?

Accepted Answer

Orbicularis oculi

Question 16

Which muscle is involved in smiling by elevating the corners of the mouth?

Accepted Answer

Zygomaticus major

Question 17

Which muscle is responsible for inverting and dorsiflexing the foot at the ankle?

Accepted Answer

Tibialis anterior

Question 18

Which muscle is a part of the rotator cuff and is responsible for abduction of the arm at the shoulder?

Accepted Answer

Supraspinatus

Question 19

Which muscle group is responsible for flexing the leg at the knee and extending the thigh at the hip?

Accepted Answer

Hamstring group

Question 20

A patient is unable to compress their abdomen and flex their vertebral column. Which muscle is most likely affected?

Accepted Answer

Rectus abdominis

Muscle Anatomy and Physiology: Study Guide for Major Muscles and Actions

Guida di studio - Domande di pratica

Study guide - Flashcard