Question 1

Which muscle is primarily responsible for flexion of the forearm at the elbow joint, and is located on the anterior side of the upper arm?

Accepted Answer

Biceps brachii

Question 2

A patient presents with difficulty abducting their arm at the shoulder. Which muscle is most likely impaired?

Accepted Answer

Deltoid

Question 3

Which muscle is found in the posterior compartment of the arm and is responsible for extension of the forearm?

Accepted Answer

Triceps brachii

Question 4

During a tennis match, a player injures the muscle responsible for pronating the forearm. Which muscle is most likely affected?

Accepted Answer

Pronator teres

Question 5

Which muscle is a deep flexor of the fingers and is located in the anterior compartment of the forearm?

Accepted Answer

Flexor digitorum profundus

Question 6

A patient cannot extend their wrist and fingers after a humeral fracture. Which nerve and muscle group are most likely affected?

Accepted Answer

Radial nerve and extensor muscles

Question 7

Which muscle is responsible for opposition of the thumb, allowing you to touch your thumb to your little finger?

Accepted Answer

Opponens pollicis

Question 8

Which muscle forms the bulk of the calf and is responsible for plantar flexion of the foot at the ankle joint?

Accepted Answer

Gastrocnemius

Question 9

A soccer player sustains an injury to the lateral side of the thigh and has difficulty extending the knee. Which muscle is most likely injured?

Accepted Answer

Vastus lateralis

Question 10

Which muscle is the primary flexor of the hip and is composed of two muscles that merge below the inguinal ligament?

Accepted Answer

Iliopsoas

Question 11

Which muscle is responsible for dorsiflexion of the foot and is located on the anterior aspect of the leg?

Accepted Answer

Tibialis anterior

Question 12

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

Accepted Answer

Tibialis anterior

Question 13

Which muscle is part of the quadriceps femoris group and is located on the medial side of the thigh?

Accepted Answer

Vastus medialis

Question 14

Which muscle is responsible for adduction of the thigh and is located in the medial compartment of the thigh?

Accepted Answer

Adductor longus

Question 15

Which muscle is a deep rotator of the hip and is located posteriorly, inferior to the gluteus medius?

Accepted Answer

Piriformis

Question 16

A patient is unable to extend their fingers at the metacarpophalangeal joints. Which muscle is most likely affected?

Accepted Answer

Extensor digitorum

Question 17

Which muscle is responsible for flexion of the little finger at the metacarpophalangeal joint?

Accepted Answer

Flexor digiti minimi brevis

Question 18

Which muscle is located in the posterior compartment of the thigh and is responsible for flexion of the knee?

Accepted Answer

Biceps femoris

Question 19

Which muscle is responsible for abduction of the thigh and is located on the lateral aspect of the hip?

Accepted Answer

Gluteus medius

Question 20

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

Accepted Answer

Flexor carpi radialis

Muscles of the Arms and Legs: Structure and Function

Study Guide - Practice Questions