Question 1

Which of the following best describes the structural organization of a skeletal muscle from largest to smallest component?

Accepted Answer

Fascicle, muscle fiber, myofibril, sarcomere

Question 2

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

Accepted Answer

Biceps brachii

Question 3

A patient presents with difficulty in breathing due to impaired contraction of the primary muscle of inspiration. Which muscle is most likely affected?

Accepted Answer

Diaphragm

Question 4

Which of the following muscles is NOT part of the rotator cuff?

Accepted Answer

Teres major

Question 5

During a biceps curl, which muscle acts as the antagonist?

Accepted Answer

Triceps brachii

Question 6

Which muscle is responsible for plantar flexion of the foot at the ankle joint?

Accepted Answer

Gastrocnemius

Question 7

A patient cannot abduct their arm at the shoulder joint. Which muscle is most likely paralyzed?

Accepted Answer

Deltoid

Question 8

Which of the following best describes the arrangement of actin and myosin filaments in a sarcomere?

Accepted Answer

Actin filaments are anchored to the Z line and myosin filaments are anchored to the M line

Question 9

Which muscle is primarily responsible for extension of the knee joint?

Accepted Answer

Rectus femoris

Question 10

Which of the following muscles is involved in mastication (chewing)?

Accepted Answer

Masseter

Question 11

A patient has a lesion affecting the facial nerve. Which muscle would most likely be paralyzed?

Accepted Answer

Orbicularis oris

Question 12

Which muscle is responsible for dorsiflexion of the foot?

Accepted Answer

Tibialis anterior

Question 13

Which of the following is a function of the rectus abdominis muscle?

Accepted Answer

Flexion of the vertebral column

Question 14

Which muscle is the primary mover for shrugging the shoulders?

Accepted Answer

Trapezius

Question 15

Which muscle group is located on the posterior aspect of the thigh and is responsible for knee flexion?

Accepted Answer

Hamstrings

Question 16

Which of the following best describes the function of the external oblique muscle?

Accepted Answer

Flexion and rotation of the trunk

Question 17

Which muscle is responsible for closing the jaw?

Accepted Answer

Temporalis

Question 18

Which muscle is the primary extensor of the forearm at the elbow joint?

Accepted Answer

Triceps brachii

Question 19

Which of the following muscles is responsible for adduction of the thigh at the hip joint?

Accepted Answer

Adductor longus

Question 20

A patient is unable to extend their wrist and fingers. Which muscle group is most likely affected?

Accepted Answer

Extensor group of the forearm

Muscle Tissue and the Muscular System: Structured Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards