Question 1

Which of the following best describes the function of the sarcolemma in skeletal muscle fibers?

Accepted Answer

It is the membrane that surrounds the muscle cell, helping transmit action potentials.

Question 2

A patient suffers a deep cut that severs the epimysium but leaves the perimysium and endomysium intact. Which of the following is most likely to occur?

Accepted Answer

Individual muscle fibers will be unaffected, but the muscle as a whole will lose structural integrity.

Question 3

Which of the following muscle fiber arrangements allows for the greatest range of motion but the least force production?

Accepted Answer

Parallel

Question 4

A muscle is named 'biceps brachii.' Based on anatomical terminology, what does this name indicate?

Accepted Answer

It is located in the arm and has two heads.

Question 5

Which property of muscle tissue allows a muscle to return to its original length after being stretched?

Accepted Answer

Elasticity

Question 6

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

Accepted Answer

Triceps brachii

Question 7

Which of the following best describes the role of the sarcoplasmic reticulum in muscle contraction?

Accepted Answer

It stores and releases calcium ions necessary for contraction.

Question 8

A muscle fiber is stimulated at a higher frequency, resulting in increased tension. This phenomenon is best explained by which concept?

Accepted Answer

Summation

Question 9

Which connective tissue layer directly surrounds individual muscle fibers?

Accepted Answer

Endomysium

Question 10

Which of the following is true regarding the arrangement of myofilaments within a sarcomere?

Accepted Answer

Thin filaments are anchored to the Z line, and thick filaments are anchored at the M line.

Question 11

A muscle that assists the prime mover in performing an action is called a:

Accepted Answer

Synergist

Question 12

Which of the following best describes a motor unit?

Accepted Answer

A nerve and all the muscle fibers it innervates.

Question 13

Which muscle fiber arrangement is best suited for generating the greatest force?

Accepted Answer

Multipennate

Question 14

Which of the following is a function of skeletal muscle that is critical for homeostasis?

Accepted Answer

Maintaining body temperature through heat production

Question 15

Which of the following best explains why the deltoid muscle is classified as multipennate?

Accepted Answer

Its fibers are arranged at multiple angles to several tendons.

Question 16

If a muscle's insertion is moved closer to its origin during contraction, what type of action is occurring?

Accepted Answer

Flexion

Question 17

Which of the following is NOT a property shared by all muscle tissue types?

Accepted Answer

Voluntary contraction

Question 18

Which of the following best describes the function of tendons?

Accepted Answer

They connect muscle to bone.

Question 19

A patient is unable to stabilize their joints during movement. Which muscle group is most likely impaired?

Accepted Answer

Fixators

Question 20

Which of the following best describes the relationship between the number of motor units activated and the force of muscle contraction?

Accepted Answer

The force of contraction increases as more motor units are activated.

The Muscular System: Skeletal Muscle Tissue and Muscle Organization

Study Guide - Practice Questions

Study Guide - Flashcards