Question 1

Which of the following best describes the role of a synergist muscle during movement?

Accepted Answer

It assists the prime mover by adding extra force or reducing unnecessary movement.

Question 2

A muscle that crosses on the anterior side of a joint typically produces which movement at the shoulder?

Accepted Answer

Flexion

Question 3

Which fascicle arrangement is characterized by fascicles that converge toward a single tendon from a broad origin, as seen in the pectoralis major?

Accepted Answer

Convergent

Question 4

The sternocleidomastoid muscle is named based on which criteria?

Accepted Answer

Location of attachments (origin and insertion)

Question 5

Which muscle is the prime mover for jaw closure during mastication?

Accepted Answer

Temporalis

Question 6

A muscle that crosses on the lateral side of a joint produces which movement?

Accepted Answer

Abduction

Question 7

Which of the following muscles is innervated by cranial nerve VII and is responsible for closing the eyelids?

Accepted Answer

Orbicularis oculi

Question 8

Which fascicle arrangement allows for the greatest range of motion but the least power?

Accepted Answer

Parallel

Question 9

A patient is unable to smile or frown on one side of their face. Which nerve is most likely damaged?

Accepted Answer

Facial nerve (cranial nerve VII)

Question 10

Which muscle forms the floor of the oral cavity and is involved in elevating the hyoid bone during swallowing?

Accepted Answer

Mylohyoid

Question 11

If a muscle is named 'extensor carpi radialis longus,' what information can you infer from its name?

Accepted Answer

It extends the wrist, is associated with the radius, and is long.

Question 12

Which muscle is responsible for compressing the cheeks during chewing and is innervated by the facial nerve?

Accepted Answer

Buccinator

Question 13

Which of the following best describes a bipennate muscle?

Accepted Answer

Fascicles insert from opposite sides of a central tendon.

Question 14

During swallowing, which group of muscles depresses the hyoid bone and larynx?

Accepted Answer

Infrahyoid muscles

Question 15

Which muscle is primarily responsible for protruding the tongue?

Accepted Answer

Genioglossus

Question 16

A muscle that crosses on the posterior side of a joint produces which movement?

Accepted Answer

Extension

Question 17

Which of the following is NOT a criterion used in naming skeletal muscles?

Accepted Answer

Muscle color

Question 18

Which muscle is a fixator that stabilizes the origin of the prime mover during movement?

Accepted Answer

Trapezius

Question 19

Which of the following muscles is involved in both facial expression and mastication?

Accepted Answer

Buccinator

Question 20

A patient presents with difficulty elevating the corners of their mouth to smile. Which muscle is most likely affected?

Accepted Answer

Zygomaticus major

Study Guide: The Muscular System (Anatomy & Physiology) Chapter 10A

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