Question 1

Match the following:
-Depends on oxygen delivery and aerobic mechanisms.

Accepted Answer

A) Slow (oxidative), fatigue-resistant fibers 
B) Fast (oxidative or glycolytic), fatigable fibers 
C) fast (oxidative or glycolytic), fatigable fibers 
A) Slow (oxidative), fatigue-resistant fibers 
B) Fast (oxidative or glycolytic), fatigable fibers 
C) fast (oxidative or glycolytic), fatigable fibers

Question 2

The contractile units of skeletal muscles are ________.

Accepted Answer

A)  microtubules 
B)  myofibrils 
C)  mitochondria 
D)  T tubules 
A)  microtubules 
B)  myofibrils 
C)  mitochondria 
D)  T tubules

Question 3

Aaron arrived at the hospital with the following symptoms: drooping eyelids; fatigue and weakness of his muscles; and difficulty talking,breathing,and swallowing.What was his diagnosis?

Accepted Answer

Aaron probably has myasthenia

Question 4

Match the following:
-Both actin and myosin are found in the ________.

Accepted Answer

A) A band 
B) Z discs 
C) I band 
D) Myosin 
A) A band 
B) Z discs 
C) I band 
D) Myosin

Question 5

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

Accepted Answer

A) E 
B) A 
C) D 
D) C 
E) B 
A) E 
B) A 
C) D 
D) C 
E) B

Question 6

Hypothetically,if a muscle were stretched to the point where thick and thin filaments no longer overlapped,________.

Accepted Answer

A)  maximum force production would result because the muscle has a maximum range of travel 
B)  ATP consumption would increase because the sarcomere is "trying" to contract 
C)  no muscle tension could be generated 
D)  cross bridge attachment would be optimum because of all the free binding sites on actin 
A)  maximum force production would result because the muscle has a maximum range of travel 
B)  ATP consumption would increase because the sarcomere is "trying" to contract 
C)  no muscle tension could be generated 
D)  cross bridge attachment would be optimum because of all the free binding sites on actin

Question 7

What is the most distinguishing characteristic of muscle tissue?

Accepted Answer

A)  it is composed of multiple cells working together 
B)  the ability to respond to nervous stimulation 
C)  the ability to transform chemical energy into mechanical energy to move the body 
D)  its cells' in ability to reproduce by mitosis 
A)  it is composed of multiple cells working together 
B)  the ability to respond to nervous stimulation 
C)  the ability to transform chemical energy into mechanical energy to move the body 
D)  its cells' in ability to reproduce by mitosis

Question 8

One of the functions of skeletal muscle contraction is production of heat.

Accepted Answer

A) True 
 B)False

Question 9

Match the following:
-Have very fast-acting myosin ATPases and depend upon anaerobic metabolism during contraction.

Accepted Answer

A) Slow (oxidative), fatigue-resistant fibers 
B) Fast (oxidative or glycolytic), fatigable fibers 
C) fast (oxidative or glycolytic), fatigable fibers 
A) Slow (oxidative), fatigue-resistant fibers 
B) Fast (oxidative or glycolytic), fatigable fibers 
C) fast (oxidative or glycolytic), fatigable fibers

Question 10

Only ________ muscle cells are multinucleated.

Accepted Answer

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

Question 11

During isometric contraction,the energy used appears as movement.

Accepted Answer

A) True 
 B)False

Question 12

Oxygen starved tissues can release chemical signals into the blood that can change the diameter of nearby blood vessels delivering oxygen and nutrients to the tissues.In doing so the blood vessels will respond through vasodilation (widening of the vessel).Which muscle type is responsible for this vasodilation?

Accepted Answer

A)  skeletal muscle 
B)  striated muscle 
C)  smooth muscle 
D)  cardiac muscle 
A)  skeletal muscle 
B)  striated muscle 
C)  smooth muscle 
D)  cardiac muscle

Question 13

Which of the following statements is true?

Accepted Answer

A)  Cardiac muscle cells have many nuclei. 
B)  Striated muscle cells are long and cylindrical with many nuclei. 
C)  Smooth muscle cells have T tubules. 
D)  Cardiac muscle cells are found in the heart and large blood vessels. 
A)  Cardiac muscle cells have many nuclei. 
B)  Striated muscle cells are long and cylindrical with many nuclei. 
C)  Smooth muscle cells have T tubules. 
D)  Cardiac muscle cells are found in the heart and large blood vessels.

Question 14

An anaerobic metabolic pathway that results in the production of two net ATPs per glucose plus two pyruvic acid molecules is ________.

Accepted Answer

A)  glycolysis 
B)  the electron transport chain 
C)  the citric acid cycle 
D)  hydrolysis 
A)  glycolysis 
B)  the electron transport chain 
C)  the citric acid cycle 
D)  hydrolysis

Question 15

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

Question 16

Addition of more myoglobin to a muscle fiber would have the largest effect on ________.

Accepted Answer

A)  fast oxidative and slow oxidative fibers 
B)  fast glycolytic and fast oxidative fibers 
C)  fast glycolytic fibers only 
D)  fast oxidative fibers only 
A)  fast oxidative and slow oxidative fibers 
B)  fast glycolytic and fast oxidative fibers 
C)  fast glycolytic fibers only 
D)  fast oxidative fibers only

Question 17

The sliding filament model of contraction involves ________.

Accepted Answer

A)  actin and myosin lengthening in order to slide past each other 
B)  the Z discs sliding over the myofilaments 
C)  actin and myosin sliding past each other and partially overlapping 
D)  the shortening of thick filaments so that thin filaments slide past 
A)  actin and myosin lengthening in order to slide past each other 
B)  the Z discs sliding over the myofilaments 
C)  actin and myosin sliding past each other and partially overlapping 
D)  the shortening of thick filaments so that thin filaments slide past

Question 18

Peristalsis is characteristic of smooth muscle.

Accepted Answer

A) True 
 B)False

Question 19

The mechanism of contraction in smooth muscle is different from skeletal muscle in that ________.

Accepted Answer

A)  ATP energizes the sliding process 
B)  the site of calcium regulation differs 
C)  the trigger for contraction is a rise in intracellular calcium 
D)  actin and myosin interact by the sliding filament mechanism 
A)  ATP energizes the sliding process 
B)  the site of calcium regulation differs 
C)  the trigger for contraction is a rise in intracellular calcium 
D)  actin and myosin interact by the sliding filament mechanism

Question 20

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

Accepted Answer

A) A 
B) E 
C) D 
D) C 
E) B 
A) A 
B) E 
C) D 
D) C 
E) B

Exam 9: Muscles and Muscle Tissue

Match the following: -Depends on oxygen delivery and aerobic mechanisms.

The contractile units of skeletal muscles are ________.

Aaron arrived at the hospital with the following symptoms: drooping eyelids; fatigue and weakness of his muscles; and difficulty talking,breathing,and swallowing.What was his diagnosis?

Match the following: -Both actin and myosin are found in the ________.

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

Hypothetically,if a muscle were stretched to the point where thick and thin filaments no longer overlapped,________.

What is the most distinguishing characteristic of muscle tissue?

One of the functions of skeletal muscle contraction is production of heat.

Match the following: -Have very fast-acting myosin ATPases and depend upon anaerobic metabolism during contraction.

Only ________ muscle cells are multinucleated.

During isometric contraction,the energy used appears as movement.

Which of the following statements is true?

An anaerobic metabolic pathway that results in the production of two net ATPs per glucose plus two pyruvic acid molecules is ________.

Which of the following is true about smooth muscle?

Addition of more myoglobin to a muscle fiber would have the largest effect on ________.

The sliding filament model of contraction involves ________.

Peristalsis is characteristic of smooth muscle.

The mechanism of contraction in smooth muscle is different from skeletal muscle in that ________.

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

The Human Body: an Orientation

Chemistry Comes Alive

Cells: the Living Units

Tissue: the Living Fabric

The Integumentary System

Bones and Skeletal Tissue

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 Defenses

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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