Question 1

Which muscle is primarily responsible for flexion of the forearm at the elbow joint during a biceps curl exercise?

Accepted Answer

brachialis

Question 2

A patient presents with difficulty elevating their scapula. Which muscle is most likely impaired?

Accepted Answer

trapezius

Question 3

During mastication, which muscle is primarily responsible for closing the jaw?

Accepted Answer

masseter

Question 4

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

Accepted Answer

deltoid

Question 5

If the quadriceps tendon is damaged, which movement would be most affected?

Accepted Answer

extension of the knee

Question 6

Which muscle acts as an antagonist to the biceps brachii during elbow flexion?

Accepted Answer

triceps brachii

Question 7

A soccer player suffers a strain to the hamstrings. Which of the following muscles is NOT part of the hamstring group?

Accepted Answer

rectus femoris

Question 8

Which muscle is primarily responsible for dorsiflexion of the foot?

Accepted Answer

tibialis anterior

Question 9

During forced expiration, which muscle of respiration is most active?

Accepted Answer

internal intercostals

Question 10

Which muscle is involved in both flexion and lateral rotation of the thigh at the hip joint?

Accepted Answer

sartorius

Question 11

A patient is unable to compress their cheeks while eating. Which muscle is most likely affected?

Accepted Answer

buccinator

Question 12

Which muscle is the primary agonist for shoulder abduction from 15° to 90°?

Accepted Answer

deltoid

Question 13

Which muscle is responsible for flexion of the wrist and is located on the anterior forearm?

Accepted Answer

flexor carpi radialis

Question 14

Which muscle is most important for stabilizing the scapula against the thoracic wall?

Accepted Answer

serratus anterior

Question 15

Which muscle is a synergist to the gastrocnemius during plantar flexion of the foot?

Accepted Answer

soleus

Question 16

A patient has difficulty extending their fingers. Which muscle is most likely impaired?

Accepted Answer

extensor digitorum

Question 17

Which muscle is responsible for flexion of the thigh at the hip and is part of the quadriceps group?

Accepted Answer

rectus femoris

Question 18

Which muscle is involved in both flexion of the trunk and compression of the abdominal contents?

Accepted Answer

rectus abdominis

Question 19

Which muscle is primarily responsible for elevating the ribs during inspiration?

Accepted Answer

external intercostals

Question 20

A patient presents with winged scapula after a nerve injury. Which nerve and muscle are most likely involved?

Accepted Answer

long thoracic nerve and serratus anterior

Appendicular Muscles: Structure, Function, and Classification

Guida di studio - Domande di pratica