Question 1

Which of the following does not influence smooth muscle activity?

Accepted Answer

A)  autonomic neurotransmitters 
B)  mechanical stretch 
C)  hormones 
D)  alpha motor neurons 
E)  local metabolites 
A)  autonomic neurotransmitters 
B)  mechanical stretch 
C)  hormones 
D)  alpha motor neurons 
E)  local metabolites D

Question 2

Indicate which of the characteristics in question apply to each of the muscle fiber types by using the following answer code (more than one answer may apply):
-Has abundant glycolytic enzymes.

Accepted Answer

A) slow-oxidative fiber 
B) fast-oxidative fiber 
C) fast-glycolytic fiber 
A) slow-oxidative fiber 
B) fast-oxidative fiber 
C) fast-glycolytic fiber C

Question 3

Single-unit smooth muscle is ______ rather than requiring nervous stimulation.

Accepted Answer

self-excitable

Question 4

Fatigue is the failure of a muscle fiber to maintain ____ as a result of previous contractile activity.

Accepted Answer

A)  excitability. 
B)  muscle mass. 
C)  tension. 
D)  sarcomere number. 
E)  mitochondria. 
A)  excitability. 
B)  muscle mass. 
C)  tension. 
D)  sarcomere number. 
E)  mitochondria.

Question 5

An action potential rapidly spreads to the central portions of a muscle cell by means of the

Accepted Answer

A)  Z lines. 
B)  sarcoplasmic reticulum. 
C)  H zone. 
D)  pores in the membrane surface. 
E)  T tubules. 
A)  Z lines. 
B)  sarcoplasmic reticulum. 
C)  H zone. 
D)  pores in the membrane surface. 
E)  T tubules.

Question 6

Muscles that have a fine degree of control have small motor units.

Accepted Answer

A) True 
 B)False

Question 7

MATCHING
Indicate which of the muscle proteins in skeletal muscle is associated with the item in question by writing the appropriate letters in the blanks using the answer code below:
-Found in higher concentration is smooth muscle compared to skeletal muscle.

Accepted Answer

A) actin only 
B) myosin only 
C) actin and myosin 
D) troponin-tropomyosin complex 
E) actin, troponin, and tropomyosin
F)actin, myosin, troponin, and tropomyosin 
A) actin only 
B) myosin only 
C) actin and myosin 
D) troponin-tropomyosin complex 
E) actin, troponin, and tropomyosin
F)actin, myosin, troponin, and tropomyosin

Question 8

The contractile response of a muscle fiber to a single action potential is called a(n) ____________________.

Accepted Answer

The answer of The contractile response of a muscle fiber...

Question 9

A(n) ____________________ develops following sustained anaerobic activity of muscles.

Accepted Answer

The answer of A(n) ____________________ develops following sustained anaerobic activity...

Question 10

Enlargement of muscle due to weight lifting is a result of primarily

Accepted Answer

A)  hypertrophy. 
B)  hyperplasia. 
C)  increased production of actin and myosin. 
D)  increases in the number of cells. 
E)  both (a) and (c) above. 
A)  hypertrophy. 
B)  hyperplasia. 
C)  increased production of actin and myosin. 
D)  increases in the number of cells. 
E)  both (a) and (c) above.

Question 11

Anaerobic exercise is endurance-type exercise.

Accepted Answer

A) True 
 B)False

Question 12

Calcium turns on cross bridges by physically repositioning the troponin-tropomyosin complex to uncover the actin cross-bridge binding sites in

Accepted Answer

A)  skeletal muscle. 
B)  cardiac muscle. 
C)  smooth muscle. 
D)  both skeletal and cardiac muscle. 
E)  all of these answers. 
A)  skeletal muscle. 
B)  cardiac muscle. 
C)  smooth muscle. 
D)  both skeletal and cardiac muscle. 
E)  all of these answers.

Question 13

Atrophy can develop in a muscle by either denervation or disuse.

Accepted Answer

A) True 
 B)False

Question 14

MATCHING
Indicate which of the muscle proteins in skeletal muscle is associated with the item in question by writing the appropriate letters in the blanks using the answer code below:
-Can bind with Ca²? during contraction.

Accepted Answer

A) actin only 
B) myosin only 
C) actin and myosin 
D) troponin-tropomyosin complex 
E) actin, troponin, and tropomyosin
F)actin, myosin, troponin, and tropomyosin 
A) actin only 
B) myosin only 
C) actin and myosin 
D) troponin-tropomyosin complex 
E) actin, troponin, and tropomyosin
F)actin, myosin, troponin, and tropomyosin

Question 15

The shorter a muscle fiber is before the onset of a contraction, the greater the force that can be developed upon the subsequent contraction because the thin filaments are already partially slid inward.

Accepted Answer

A) True 
 B)False

Question 16

Skeletal muscles are stimulated to contract by release of the neurotransmitter ____________________.

Accepted Answer

The answer of Skeletal muscles are stimulated to contract by...

Question 17

What would happen if ATP supplies became very low in a muscle cell?

Accepted Answer

A)  tension development would decrease. 
B)  cross bridges would not detach from actin. 
C)  possibly contractures. 
D)  in death, rigor mortis. 
E)  all these answers. 
A)  tension development would decrease. 
B)  cross bridges would not detach from actin. 
C)  possibly contractures. 
D)  in death, rigor mortis. 
E)  all these answers.

Question 18

Muscles with small motor units can be controlled in a precise manner.

Accepted Answer

A) True 
 B)False

Question 19

Indicate which type of muscle is associated with the property in question by writing the appropriate letter in the blank using the answer code below:
-Is striated.

Accepted Answer

A) skeletal muscle only 
B) single-unit smooth muscle only 
C) cardiac muscle only 
D) skeletal muscle and cardiac muscle 
E) skeletal muscle and single-unit smooth muscle
F)single-unit smooth muscle and cardiac muscle
G)skeletal, single-unit smooth, and cardiac muscles 
A) skeletal muscle only 
B) single-unit smooth muscle only 
C) cardiac muscle only 
D) skeletal muscle and cardiac muscle 
E) skeletal muscle and single-unit smooth muscle
F)single-unit smooth muscle and cardiac muscle
G)skeletal, single-unit smooth, and cardiac muscles

Question 20

Fast-glycolytic fibers

Accepted Answer

A)  contain an abundance of mitochondria. 
B)  can be converted into fast-oxidative fibers by regular endurance activities. 
C)  are most abundant in muscles specialized for maintaining low-intensity contractions for long periods of time without fatigue. 
D)  both (b) and (c) above are correct. 
E)  all of these answers. 
A)  contain an abundance of mitochondria. 
B)  can be converted into fast-oxidative fibers by regular endurance activities. 
C)  are most abundant in muscles specialized for maintaining low-intensity contractions for long periods of time without fatigue. 
D)  both (b) and (c) above are correct. 
E)  all of these answers.

Which of the following does not influence smooth muscle activity?

Indicate which of the characteristics in question apply to each of the muscle fiber types by using the following answer code (more than one answer may apply): -Has abundant glycolytic enzymes.

Single-unit smooth muscle is ______ rather than requiring nervous stimulation.

Fatigue is the failure of a muscle fiber to maintain ____ as a result of previous contractile activity.

An action potential rapidly spreads to the central portions of a muscle cell by means of the

Muscles that have a fine degree of control have small motor units.

MATCHING Indicate which of the muscle proteins in skeletal muscle is associated with the item in question by writing the appropriate letters in the blanks using the answer code below: -Found in higher concentration is smooth muscle compared to skeletal muscle.

The contractile response of a muscle fiber to a single action potential is called a(n) ____________________.

A(n) ____________________ develops following sustained anaerobic activity of muscles.

Enlargement of muscle due to weight lifting is a result of primarily

Anaerobic exercise is endurance-type exercise.

Calcium turns on cross bridges by physically repositioning the troponin-tropomyosin complex to uncover the actin cross-bridge binding sites in

Atrophy can develop in a muscle by either denervation or disuse.

MATCHING Indicate which of the muscle proteins in skeletal muscle is associated with the item in question by writing the appropriate letters in the blanks using the answer code below: -Can bind with Ca²? during contraction.

The shorter a muscle fiber is before the onset of a contraction, the greater the force that can be developed upon the subsequent contraction because the thin filaments are already partially slid inward.

Skeletal muscles are stimulated to contract by release of the neurotransmitter ____________________.

What would happen if ATP supplies became very low in a muscle cell?

Muscles with small motor units can be controlled in a precise manner.

Indicate which type of muscle is associated with the property in question by writing the appropriate letter in the blank using the answer code below: -Is striated.

Fast-glycolytic fibers

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System: Afferent Division and Special Senses

The Peripheral Nervous System: Efferent Division

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood and Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine System

The Reproductive System

Filters

Exam 8: Muscle Physiology

Which of the following does not influence smooth muscle activity?

Indicate which of the characteristics in question apply to each of the muscle fiber types by using the following answer code (more than one answer may apply): -Has abundant glycolytic enzymes.

Single-unit smooth muscle is ______ rather than requiring nervous stimulation.

Fatigue is the failure of a muscle fiber to maintain ____ as a result of previous contractile activity.

An action potential rapidly spreads to the central portions of a muscle cell by means of the

Muscles that have a fine degree of control have small motor units.

MATCHING Indicate which of the muscle proteins in skeletal muscle is associated with the item in question by writing the appropriate letters in the blanks using the answer code below: -Found in higher concentration is smooth muscle compared to skeletal muscle.

The contractile response of a muscle fiber to a single action potential is called a(n) ____________________.

A(n) ____________________ develops following sustained anaerobic activity of muscles.

Enlargement of muscle due to weight lifting is a result of primarily

Anaerobic exercise is endurance-type exercise.

Calcium turns on cross bridges by physically repositioning the troponin-tropomyosin complex to uncover the actin cross-bridge binding sites in

Atrophy can develop in a muscle by either denervation or disuse.

MATCHING Indicate which of the muscle proteins in skeletal muscle is associated with the item in question by writing the appropriate letters in the blanks using the answer code below: -Can bind with Ca²? during contraction.

The shorter a muscle fiber is before the onset of a contraction, the greater the force that can be developed upon the subsequent contraction because the thin filaments are already partially slid inward.

Skeletal muscles are stimulated to contract by release of the neurotransmitter ____________________.

What would happen if ATP supplies became very low in a muscle cell?

Muscles with small motor units can be controlled in a precise manner.

Indicate which type of muscle is associated with the property in question by writing the appropriate letter in the blank using the answer code below: -Is striated.

Fast-glycolytic fibers

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System: Afferent Division and Special Senses

The Peripheral Nervous System: Efferent Division

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood and Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine System

The Reproductive System

Filters