Question 1

Which muscle group is primarily responsible for flexion of the forearm at the elbow joint?

Accepted Answer

Biceps brachii

Question 2

A patient presents with difficulty extending their knee after a sports injury. Which muscle is most likely injured?

Accepted Answer

Quadriceps femoris

Question 3

Which muscle is located on the posterior side of the body and is responsible for shoulder elevation?

Accepted Answer

Trapezius

Question 4

During a push-up, which muscle acts as the primary agonist for elbow extension?

Accepted Answer

Triceps brachii

Question 5

Which muscle group is most involved in plantar flexion of the foot, such as when standing on tiptoes?

Accepted Answer

Gastrocnemius and soleus

Question 6

A person suffers a deep cut to the anterior thigh. Which muscle is most likely to be affected?

Accepted Answer

Rectus femoris

Question 7

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

Accepted Answer

Deltoid

Question 8

If a patient cannot dorsiflex their foot, which muscle is most likely paralyzed?

Accepted Answer

Tibialis anterior

Question 9

Which muscle forms the bulk of the calf and is visible from the posterior view?

Accepted Answer

Gastrocnemius

Question 10

Which muscle is responsible for compressing the abdominal contents and is visible on the anterior trunk?

Accepted Answer

Rectus abdominis

Question 11

A patient is unable to abduct their thigh. Which muscle is most likely affected?

Accepted Answer

Gluteus medius

Question 12

Which muscle is most responsible for flexion of the trunk, as in performing a sit-up?

Accepted Answer

Rectus abdominis

Question 13

Which muscle is located on the lateral side of the thigh and is important for stabilizing the pelvis during walking?

Accepted Answer

Gluteus medius

Question 14

Which muscle is primarily responsible for extension of the forearm at the elbow joint?

Accepted Answer

Triceps brachii

Question 15

Which muscle is most superficial on the anterior chest and is responsible for flexion, adduction, and medial rotation of the humerus?

Accepted Answer

Pectoralis major

Question 16

A patient presents with winged scapula after a nerve injury. Which muscle is most likely paralyzed?

Accepted Answer

Serratus anterior

Question 17

Which muscle is responsible for flexion of the hip joint and is visible on the anterior aspect of the thigh?

Accepted Answer

Iliopsoas

Question 18

Which muscle is most responsible for extension of the vertebral column?

Accepted Answer

Erector spinae

Question 19

Which muscle is located on the posterior thigh and is involved in knee flexion?

Accepted Answer

Biceps femoris

Question 20

Which muscle is responsible for adduction of the thigh and is located on the medial aspect of the thigh?

Accepted Answer

Adductor longus

Overview of Human Muscular System: Anterior and Posterior Views

Study Guide - Practice Questions