Question 1

Which statement best describes the difference between the superior (proximal) and inferior (distal) attachments of a skeletal muscle?

Accepted Answer

The superior (proximal) attachment is typically stationary during contraction, while the inferior (distal) attachment moves.

Question 2

Which organizational pattern of muscle fascicles allows for the greatest range of motion but the least power?

Accepted Answer

Parallel

Question 3

In a biceps curl, which muscle acts as the agonist?

Accepted Answer

Biceps brachii

Question 4

Which of the following is NOT one of the seven characteristics that may contribute to a muscle’s name?

Accepted Answer

Blood supply

Question 5

Which muscle’s name indicates its action and specific body region?

Accepted Answer

Flexor carpi radialis

Question 6

Which muscle is primarily responsible for raising the eyebrows and wrinkling the forehead?

Accepted Answer

Frontal belly of occipitofrontalis

Question 7

Which of the following is NOT an action of the six extrinsic muscles of the eye?

Accepted Answer

Constriction of the pupil

Question 8

Which cranial nerve innervates the lateral rectus muscle of the eye?

Accepted Answer

Abducens nerve (CN VI)

Question 9

Which muscle of mastication is primarily responsible for elevating the mandible during chewing?

Accepted Answer

Masseter

Question 10

Which of the following muscles is an intrinsic muscle of the tongue?

Accepted Answer

Superior longitudinal muscle

Question 11

Which muscle is NOT one of the three primary muscles of the pharynx?

Accepted Answer

Palatoglossus

Question 12

Which suprahyoid muscle elevates the hyoid bone and assists in swallowing?

Accepted Answer

Mylohyoid

Question 13

Which muscle is located in the anterolateral neck and is responsible for flexing the neck and rotating the head to the opposite side?

Accepted Answer

Sternocleidomastoid

Question 14

Which deep back muscle is primarily responsible for extension of the vertebral column?

Accepted Answer

Erector spinae

Question 15

Which muscle is the primary muscle of inspiration?

Accepted Answer

Diaphragm

Question 16

Which abdominal muscle has fibers that run horizontally and is primarily responsible for compressing the abdominal contents?

Accepted Answer

Transversus abdominis

Question 17

Which muscle forms the boundary of the perineum and is important for supporting pelvic organs?

Accepted Answer

Levator ani

Question 18

Which muscle is responsible for flexion of the arm at the glenohumeral joint?

Accepted Answer

Pectoralis major

Question 19

Which rotator cuff muscle is responsible for abduction of the arm?

Accepted Answer

Supraspinatus

Question 20

Which muscle in the anterior compartment of the arm is responsible for flexion of the elbow?

Accepted Answer

Brachialis

Chapter 11: Muscular System – Axial and Appendicular Muscles Study Guide

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