Question 1

Which cells help repair injured skeletal muscle fibers and allow regeneration of dead skeletal muscle?

Accepted Answer

The answer of Which cells help repair injured skeletal muscle...

Question 2

Only muscle cells are always multinucleated.

Accepted Answer

The answer of Only muscle cells are always multinucleated....

Question 3

Which muscle cells have the greatest ability to regenerate?

Accepted Answer

A)  skeletal 
B)  cardiac 
C)  no muscle can regenerate 
D)  smooth 
A)  skeletal 
B)  cardiac 
C)  no muscle can regenerate 
D)  smooth

Question 4

Which of the following surrounds the individual muscle cell?

Accepted Answer

A)  endomysium 
B)  perimysium 
C)  epimysium 
D)  fascicle 
A)  endomysium 
B)  perimysium 
C)  epimysium 
D)  fascicle

Question 5

Figure 9.2
Using Figure 9.2, match the following:
-Z disc.

Accepted Answer

The answer of   Figure 9.2
Using Figure 9.2, match...

Question 6

Which of the following is true about smooth muscle?

Accepted Answer

A)  Certain smooth muscle cells can actually divide to increase their numbers. 
B)  Smooth muscle cannot stretch as much as skeletal muscle. 
C)  Smooth muscle, in contrast to skeletal muscle, cannot synthesize or secrete any connective tissue elements. 
D)  Smooth muscle has well- developed T tubules at the site of invagination. 
A)  Certain smooth muscle cells can actually divide to increase their numbers. 
B)  Smooth muscle cannot stretch as much as skeletal muscle. 
C)  Smooth muscle, in contrast to skeletal muscle, cannot synthesize or secrete any connective tissue elements. 
D)  Smooth muscle has well- developed T tubules at the site of invagination.

Question 7

Muscle contraction will always promote movement of body parts regardless of how they are attached.

Accepted Answer

A) True 
 B)False

Question 8

An increase in the calcium ion level in the sarcoplasm starts the sliding of the thin filaments. When the level of calcium ions declines, sliding stops.

Accepted Answer

A) True 
 B)False

Question 9

Muscle tone is the small amount of tautness or tension in the muscle due to weak, involuntary contractions of its motor units.

Accepted Answer

A) True 
 B)False

Question 10

Figure 9.1
Using Figure 9.1, match the following:
-Connective tissue sheath surrounding individual muscle fibers

Accepted Answer

The answer of   Figure 9.1
Using Figure 9.1, match...

Question 11

A patient has no peristalsis in the gastrointestinal tract. Explain a possible complication of this condition.

Accepted Answer

Peristalsis is wavelike movement produce

Question 12

Which of the following is the correct sequence of events for muscle contractions?

Accepted Answer

A)  motor neuron action potential, neurotransmitter release, muscle cell action potential, release of calcium ions from SR, ATP- driven power stroke, sliding of myofilaments 
B)  neurotransmitter release, motor neuron action potential, muscle cell action potential, release of calcium ions from SR, ATP- driven power stroke 
C)  neurotransmitter release, muscle cell action potential, motor neuron action potential, release of calcium ions from SR, sliding of myofilaments, ATP- driven power stroke 
D)  muscle cell action potential, neurotransmitter release, ATP- driven power stroke, calcium ion release from SR, sliding of myofilaments 
A)  motor neuron action potential, neurotransmitter release, muscle cell action potential, release of calcium ions from SR, ATP- driven power stroke, sliding of myofilaments 
B)  neurotransmitter release, motor neuron action potential, muscle cell action potential, release of calcium ions from SR, ATP- driven power stroke 
C)  neurotransmitter release, muscle cell action potential, motor neuron action potential, release of calcium ions from SR, sliding of myofilaments, ATP- driven power stroke 
D)  muscle cell action potential, neurotransmitter release, ATP- driven power stroke, calcium ion release from SR, sliding of myofilaments

Question 13

What is the functional role of the T tubules?

Accepted Answer

A)  hold cross bridges in place in a resting muscle 
B)  enhance cellular communication during muscle contraction 
C)  stabilize the G and F actin 
D)  synthesize ATP to provide energy for muscle contraction 
A)  hold cross bridges in place in a resting muscle 
B)  enhance cellular communication during muscle contraction 
C)  stabilize the G and F actin 
D)  synthesize ATP to provide energy for muscle contraction

Question 14

Immediately following the arrival of the stimulus at a skeletal muscle cell there is a short period called the period during which the neurotransmitter is released by exocytosis, diffuses across the synaptic cleft, and binds to its receptors.

Accepted Answer

A)  relaxation 
B)  latent 
C)  refractory 
D)  contraction 
A)  relaxation 
B)  latent 
C)  refractory 
D)  contraction

Question 15

A resting potential is caused by a difference in the concentration of certain ions inside and outside the cell.

Accepted Answer

A) True 
 B)False

Question 16

The effect of a neurotransmitter on the muscle cell membrane is to modify its ion permeability properties temporarily.

Accepted Answer

A) True 
 B)False

Question 17

Lynn has been waking up each night with intense pain in her calves. She does not feel that it is serious enough to seek medical attention but would like to know what is causing the pain. What would you tell her concerning this problem? She has been playing tennis all summer for several hours each day. Could this have anything to do with the night pain?

Accepted Answer

This is due to sustained spasm, or tetan

Question 18

Figure 9.2
Using Figure 9.2, match the following:
-M line.

Accepted Answer

The answer of   Figure 9.2
Using Figure 9.2, match...

Question 19

Figure 9.1
Using Figure 9.1, match the following:
-Bundle of muscle cells surrounded by a perimysium

Accepted Answer

The answer of   
Figure 9.1
Using Figure 9.1, match...

Question 20

The major function of the sarcoplasmic reticulum in muscle contraction is to .

Accepted Answer

A)  provide a source of myosin for the contraction process 
B)  regulate intracellular calcium concentration 
C)  make and store phosphocreatine 
D)  synthesize actin and myosin myofilaments 
A)  provide a source of myosin for the contraction process 
B)  regulate intracellular calcium concentration 
C)  make and store phosphocreatine 
D)  synthesize actin and myosin myofilaments

Exam 9: Muscles and Muscle Tissue

Which cells help repair injured skeletal muscle fibers and allow regeneration of dead skeletal muscle?

Only muscle cells are always multinucleated.

Which muscle cells have the greatest ability to regenerate?

Which of the following surrounds the individual muscle cell?

Figure 9.2 Using Figure 9.2, match the following: -Z disc.

Which of the following is true about smooth muscle?

Muscle contraction will always promote movement of body parts regardless of how they are attached.

An increase in the calcium ion level in the sarcoplasm starts the sliding of the thin filaments. When the level of calcium ions declines, sliding stops.

Muscle tone is the small amount of tautness or tension in the muscle due to weak, involuntary contractions of its motor units.

Figure 9.1 Using Figure 9.1, match the following: -Connective tissue sheath surrounding individual muscle fibers

A patient has no peristalsis in the gastrointestinal tract. Explain a possible complication of this condition.

Which of the following is the correct sequence of events for muscle contractions?

What is the functional role of the T tubules?

Immediately following the arrival of the stimulus at a skeletal muscle cell there is a short period called the period during which the neurotransmitter is released by exocytosis, diffuses across the synaptic cleft, and binds to its receptors.

A resting potential is caused by a difference in the concentration of certain ions inside and outside the cell.

The effect of a neurotransmitter on the muscle cell membrane is to modify its ion permeability properties temporarily.

Figure 9.2 Using Figure 9.2, match the following: -M line.

Figure 9.1 Using Figure 9.1, match the following: -Bundle of muscle cells surrounded by a perimysium

The major function of the sarcoplasmic reticulum in muscle contraction is to .

The Human Body: an Orientation

Chemistry Comes Alive

Cells: the Living Units

Tissue: the Living Fabric

The Integumentary System

Bones and Skeletal Tissues

The Skeleton

Joints

The Muscular System

Fundamentals of the Nervous System and Nervous Tissue

The Central Nervous System

The Peripheral Nervous System and Reflex Activity

The Autonomic Nervous System

The Special Senses

The Endocrine System

Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels

The Lymphatic System and Lymphoid Organs and Tissues

The Immune System: Innate and Adaptive Body Defensives

The Respiratory System

The Digestive System

Nutrition, Metabolism, and Body Temperature Regulation

The Urinary System

Fluid, Electrolyte, and Acid-Base Balance

The Reproductive System

Pregnancy and Human Development

Heredity

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