Question 1

Which property of muscle tissue allows it to return to its original shape after being stretched?

Accepted Answer

Elasticity

Question 2

A patient is unable to voluntarily move their biceps brachii muscle. Which type of muscle tissue is most likely affected?

Accepted Answer

Skeletal muscle tissue

Question 3

Which connective tissue sheath directly surrounds each individual muscle fiber?

Accepted Answer

Endomysium

Question 4

During a concentric contraction, what happens to the sarcomere?

Accepted Answer

The Z discs move closer together

Question 5

Which of the following best describes the role of calcium ions in skeletal muscle contraction?

Accepted Answer

They trigger the sliding filament mechanism by binding to regulatory proteins on actin

Question 6

A muscle is stretched by a movement that is the opposite of the movement it normally produces. Which property of muscle tissue does this describe?

Accepted Answer

Extensibility

Question 7

Which type of skeletal muscle fiber is most resistant to fatigue and why?

Accepted Answer

Slow oxidative fibers, because they have abundant mitochondria and myoglobin

Question 8

What is the functional unit of contraction in a skeletal muscle fiber?

Accepted Answer

Sarcomere

Question 9

Which of the following best explains why muscle tone is important for joint stability?

Accepted Answer

It helps stabilize many synovial joints by maintaining slight, continuous contraction

Question 10

A muscle attaches to a bone via a long, cord-like structure. This attachment is best described as:

Accepted Answer

Indirect attachment via a tendon

Question 11

Which of the following is true regarding the sliding filament mechanism?

Accepted Answer

Myosin heads pull thin filaments toward the center of the sarcomere

Question 12

Which muscle fiber type would be most prevalent in the leg muscles of a marathon runner?

Accepted Answer

Slow oxidative fibers

Question 13

Which of the following is a correct pairing of muscle tissue and its control mechanism?

Accepted Answer

Cardiac muscle – involuntary

Question 14

A patient presents with muscle weakness and enlarged muscles that are filled with fat and connective tissue. Which disorder is most likely?

Accepted Answer

Muscular dystrophy

Question 15

Which structure in the muscle fiber stores and releases calcium ions to trigger contraction?

Accepted Answer

Sarcoplasmic reticulum

Question 16

What is the main function of titin in the sarcomere?

Accepted Answer

To resist overstretching and hold thick filaments in place

Question 17

Which of the following best describes the difference in muscle mass between males and females?

Accepted Answer

Males have more muscle mass due to higher androgen levels

Question 18

Which of the following is NOT a function of skeletal muscle tissue?

Accepted Answer

Pumping blood

Question 19

Which of the following best explains why the greatest force is produced when a muscle fiber is slightly stretched before contraction?

Accepted Answer

Myosin heads can pull along the entire length of the thin filaments

Question 20

A muscle fiber is unable to respond to nerve signals due to a defect at the neuromuscular junction. Which structure is most likely malfunctioning?

Accepted Answer

Terminal bouton

Skeletal Muscle Tissue: Structure, Function, and Types

Study Guide - Practice Questions