Question 1

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

Accepted Answer

Synthesizing hormones for metabolic regulation

Question 2

A patient is experiencing difficulty maintaining blood pressure. Which muscle tissue is most likely compromised?

Accepted Answer

Smooth muscle

Question 3

Which connective tissue layer directly surrounds each individual skeletal muscle fiber?

Accepted Answer

Endomysium

Question 4

Which of the following structures is the plasma membrane of a muscle cell?

Accepted Answer

Sarcolemma

Question 5

During muscle contraction, which event occurs according to the sliding filament theory?

Accepted Answer

Thin filaments slide toward the M line

Question 6

Which of the following best describes the function of the sarcoplasmic reticulum in skeletal muscle?

Accepted Answer

Forms a tubular network around each myofibril and stores calcium ions

Question 7

A muscle cell is unable to contract because the troponin complex is nonfunctional. Which process is directly affected?

Accepted Answer

Binding of myosin to actin

Question 8

Which of the following is TRUE regarding cardiac muscle cells?

Accepted Answer

They contain intercalated discs and are branched

Question 9

A patient has a mutation affecting the Z-disc proteins in their skeletal muscle. Which of the following is most likely to be impaired?

Accepted Answer

Anchoring of actin filaments

Question 10

Which muscle tissue type is primarily responsible for regulating the diameter of blood vessels?

Accepted Answer

Smooth muscle

Question 11

Which of the following correctly matches the connective tissue layer with its description?

Accepted Answer

Endomysium: Elastic connective tissue surrounding each muscle fiber

Question 12

Which of the following is the smallest contractile unit of a striated muscle cell?

Accepted Answer

Sarcomere

Question 13

A muscle fiber is unable to relax after contraction. Which structure is most likely malfunctioning?

Accepted Answer

Sarcoplasmic reticulum

Question 14

Which of the following is a cytoskeletal filament in skeletal muscle composed of myosin?

Accepted Answer

Thick myofilament

Question 15

Which of the following best describes the role of the neuromuscular junction?

Accepted Answer

It is the site where a motor neuron communicates with a muscle fiber to initiate contraction

Question 16

Which equation best represents the relationship between force ($$F$$), mass ($$m$$), and acceleration ($$a) in $$muscle contraction?

Accepted Answer

$$F = m 	imes a$$

Question 17

If the width of the A band stays the same during contraction, what does this indicate about the thick filaments?

Accepted Answer

Thick filaments do not change length during contraction

Question 18

Which of the following muscle types is under voluntary control?

Accepted Answer

Skeletal muscle

Question 19

A muscle acting as a prime mover in elbow flexion is called:

Accepted Answer

Agonist

Question 20

Which of the following is TRUE regarding the organization of skeletal muscle from largest to smallest?

Accepted Answer

Muscle organ \u003e Fascicle \u003e Muscle fiber \u003e Myofibril \u003e Sarcomere

Muscle Tissue: Structure, Function, and Physiology – Study Notes for Anatomy & Physiology

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