Question 1

Which of the following muscle types is both voluntary and striated?

Accepted Answer

Skeletal muscle

Question 2

Arrange the connective tissue layers of skeletal muscle from outermost to innermost.

Accepted Answer

Epimysium, perimysium, endomysium

Question 3

During muscle contraction, which ion is essential for triggering the process by binding to troponin?

Accepted Answer

Calcium ($$\mathrm{Ca$$^{2+}$$})$$

Question 4

Which process provides the fastest way for muscle fibers to regenerate ATP during short, intense activity?

Accepted Answer

Direct phosphorylation (creatine phosphate + ADP)

Question 5

A patient is unable to maintain muscle contraction for more than a few seconds during exercise. Which ATP generation pathway is most likely impaired?

Accepted Answer

Anaerobic glycolysis

Question 6

Which statement best describes the difference between isotonic and isometric muscle contractions?

Accepted Answer

Isometric contractions generate tension without changing muscle length; isotonic contractions change muscle length.

Question 7

During the sliding filament mechanism, which event directly causes the shortening of the muscle fiber?

Accepted Answer

Sliding of actin and myosin filaments past each other

Question 8

Which role does the agonist muscle play during movement?

Accepted Answer

Acts as the prime mover

Question 9

A sprinter relies on which ATP generation pathway for quick bursts of energy during a 100-meter dash?

Accepted Answer

Direct phosphorylation

Question 10

Which of the following best explains the process of muscle recruitment?

Accepted Answer

Activating more motor units to increase force production

Question 11

Which neurotransmitter is released at the neuromuscular junction to initiate muscle contraction?

Accepted Answer

Acetylcholine

Question 12

Which muscle type is found in the walls of hollow organs and is not under voluntary control?

Accepted Answer

Smooth muscle

Question 13

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

Accepted Answer

Hormone secretion

Question 14

A marathon runner primarily relies on which ATP generation pathway for sustained muscle activity?

Accepted Answer

Aerobic respiration

Question 15

Which structure in skeletal muscle contains the contractile proteins actin and myosin?

Accepted Answer

Myofibrils

Question 16

Which of the following best describes the role of the fixator muscle?

Accepted Answer

Stabilizes the origin of the prime mover

Question 17

If a muscle fiber is unable to release calcium from the sarcoplasmic reticulum, what will most likely happen?

Accepted Answer

The muscle will not contract

Question 18

Which of the following correctly matches the muscle role with its definition?

Accepted Answer

Agonist: Prime mover

Question 19

Which connective tissue layer surrounds individual muscle fibers?

Accepted Answer

Endomysium

Question 20

A muscle is named 'biceps brachii.' Based on anatomical naming conventions, what does 'biceps' indicate?

Accepted Answer

The muscle has two origins

Muscles & The Muscular System: Study Guide (Ch. 9 & 10)

Guida di studio - Domande di pratica