$$\\text{Muscle Mass Percentage} = \\frac{\\text{Muscle Mass}}{\\text{Body Mass}} \\times 100$$

Question 1

Which property of muscle tissue allows it to respond to a stimulus by generating an action potential?

Accepted Answer

Excitability

Question 2

A muscle that assists in supporting the pelvic floor and protecting internal organs is demonstrating which function?

Accepted Answer

Support soft tissue

Question 3

Which connective tissue layer surrounds individual muscle fibers?

Accepted Answer

Endomysium

Question 4

What is the correct order of connective tissue layers from the innermost to the outermost in a skeletal muscle?

Accepted Answer

Endomysium, Perimysium, Epimysium

Question 5

A muscle's origin is defined as:

Accepted Answer

The fixed bone or structure

Question 6

Which of the following best describes the neuromuscular junction?

Accepted Answer

The site of communication between a motor neuron and a muscle fiber

Question 7

If a muscle is repeatedly stimulated, which of the following adaptations is most likely to occur?

Accepted Answer

Increase in glycolytic enzymes and myofibrils

Question 8

Which of the following is a correct statement about muscle contraction?

Accepted Answer

Muscles only pull and work in pairs or more

Question 9

Aging and injury can lead to permanent loss of muscle tissue, a process known as:

Accepted Answer

Atrophy

Question 10

Which of the following best explains why males generally have a higher percentage of muscle mass compared to females?

Accepted Answer

Higher levels of androgens

Question 11

A patient is unable to move a muscle voluntarily but the muscle increases in size. Which process is most likely occurring?

Accepted Answer

Hypertrophy

Question 12

Which of the following is the correct formula for calculating the percentage of muscle mass in males and females?

Accepted Answer

$$\text{Muscle Mass Percentage} = \frac{\text{Muscle Mass}}{\text{Body Mass}} \times 100$$

Question 13

Which structure is responsible for transmitting the force of muscle contraction to bone?

Accepted Answer

Tendon

Question 14

A muscle's insertion is best described as:

Accepted Answer

The movable bone or structure

Question 15

Which of the following best describes the function of the sarcolemma?

Accepted Answer

It is the plasma membrane of a muscle fiber

Question 16

Which of the following is a correct statement about the motor unit?

Accepted Answer

It consists of a motor neuron and all the muscle fibers it stimulates

Question 17

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

Accepted Answer

They transmit the nerve impulse from the axon terminal to the muscle fiber

Question 18

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

Accepted Answer

Ossification

Question 19

A muscle that is unable to contract due to a lack of neural stimulation is experiencing which of the following?

Accepted Answer

Denervation

Question 20

Which of the following best explains why muscle fibers are multinucleated?

Accepted Answer

To allow for the synthesis of large amounts of proteins needed for contraction

Muscle Tissue and Movement: Structure, Function, and Clinical Aspects

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