Question 1

Which property of muscle tissue allows it to generate an electrical charge when stimulated?

Accepted Answer

Excitability

Question 2

A patient suffers a heart attack that damages the intercalated discs in cardiac muscle. Which function would be most directly impaired?

Accepted Answer

Synchronized contraction of cardiac muscle cells

Question 3

Which muscle tissue type is characterized by spindle-shaped cells, a single central nucleus, and no striations?

Accepted Answer

Smooth muscle

Question 4

Skeletal muscle fibers are multinucleated. Where are these nuclei typically located?

Accepted Answer

Peripheral within the fiber

Question 5

Which specialized term refers to the smooth endoplasmic reticulum in muscle fibers, responsible for calcium storage?

Accepted Answer

Sarcoplasmic reticulum

Question 6

During muscle contraction, which principle describes the movement of the insertion?

Accepted Answer

The insertion moves toward the origin

Question 7

Which fascicle arrangement pattern is best suited for producing the greatest range of motion at a joint?

Accepted Answer

Parallel

Question 8

A muscle fiber's ability to return to its original length after being stretched is called:

Accepted Answer

Elasticity

Question 9

Which of the following correctly matches the muscle fiber term with its general cell equivalent?

Accepted Answer

Sarcoplasmic reticulum: Smooth ER

Question 10

Which muscle tissue type is responsible for voluntary movement and attaches to bones?

Accepted Answer

Skeletal muscle

Question 11

A muscle with a bipennate fascicle arrangement would be best described as having:

Accepted Answer

Fascicles attached to both sides of a central tendon

Question 12

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

Accepted Answer

Pumping blood through the heart

Question 13

Which structural feature is unique to cardiac muscle tissue and not found in skeletal or smooth muscle?

Accepted Answer

Intercalated discs

Question 14

If a muscle fiber's mitochondria are damaged, which process would be most directly affected?

Accepted Answer

ATP production

Question 15

Which equation best represents the relationship between force ($$F$$), cross-sectional area ($$A$$), and stress ($$\sigma) in $$muscle contraction?

Accepted Answer

$$\sigma = F / A$$

Question 16

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

Accepted Answer

Synergist

Question 17

Which of the following best explains why smooth muscle does not appear striated under a microscope?

Accepted Answer

Its myofilaments are not arranged as myofibrils

Question 18

Which hierarchical level of skeletal muscle organization is immediately above the muscle fiber?

Accepted Answer

Fascicle

Question 19

A muscle's ability to extend or stretch beyond its normal length is called:

Accepted Answer

Extensibility

Question 20

Which of the following is TRUE regarding the origin and insertion of a muscle?

Accepted Answer

The origin is typically the more fixed attachment

Muscle Tissue: Structure, Types, and Functional Organization 8.1

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