Question 1

Fast-glycolytic muscle fibres do not require as much oxygen use as slow-oxidative fibres.

Accepted Answer

A) True 
 B)False

Question 2

For which activity are submaximal isometric contractions important?

Accepted Answer

A)  moving large objects 
B)  walking 
C)  maintaining posture 
D)  writing 
A)  moving large objects 
B)  walking 
C)  maintaining posture 
D)  writing

Question 3

What are in the I band of the sarcomere?

Accepted Answer

A)  overlapping thin and thick filaments 
B)  only thick filaments 
C)  only thin filaments 
D)  2 Z lines 
A)  overlapping thin and thick filaments 
B)  only thick filaments 
C)  only thin filaments 
D)  2 Z lines

Question 4

Indicate which type of muscle is associated with the property in question by using the answer code (options may be used more than once or not at all).
-myosin must be phosphorylated before it can bind with actin

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 5

Indicate which type of muscle is associated with the property in question by using the answer code (options may be used more than once or not at all).
-contains T tubules

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 6

Which muscle type is myogenic?

Accepted Answer

A)  skeletal muscle 
B)  single-unit smooth muscle 
C)  multiunit smooth muscle 
D)  both skeletal and cardiac muscle 
A)  skeletal muscle 
B)  single-unit smooth muscle 
C)  multiunit smooth muscle 
D)  both skeletal and cardiac muscle

Question 7

What would happen if ATP supplies became very low or not available in a muscle cell?

Accepted Answer

A)  an increase in tension development 
B)  cross bridges detach from actin 
C)  muscles relax 
D)  ATP is not required for detachment from actin 
A)  an increase in tension development 
B)  cross bridges detach from actin 
C)  muscles relax 
D)  ATP is not required for detachment from actin

Question 8

Summation events result from increasing amounts of cytoplasmic calcium levels.

Accepted Answer

A) True 
 B)False

Question 9

Thick filaments are made up of the protein ____________________,whereas thin filaments are composed of the three proteins ____________________,____________________,and ____________________.

Accepted Answer

-myosin,actin,tropomyosin,troponin
-myos

Question 10

Indicate the characteristics of the muscle-tension receptors by using the answer code (options may be used more than once or not at all).
-monitors change in muscle length

Accepted Answer

A) muscle spindle 
B) Golgi tendon organ 
C) both of these receptors 
A) muscle spindle 
B) Golgi tendon organ 
C) both of these receptors

Question 11

In the body's lever systems,what are the fulcrums represented by?

Accepted Answer

A)  joints 
B)  long bones 
C)  tendons 
D)  short bones 
A)  joints 
B)  long bones 
C)  tendons 
D)  short bones

Question 12

MATCHING
Indicate which of the muscle proteins in skeletal muscle is associated with the item in question by using the following code (options may be used more than once or not at all).
-found in the A band

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 13

During the power stroke,all of the cross bridges on myosin do not stroke in unison when pulling the actin filaments.

Accepted Answer

A) True 
 B)False

Question 14

Central fatigue of a muscle directly results from the accumulation of lactic acid in the muscle.

Accepted Answer

A) True 
 B)False

Question 15

Indicate which characteristic applies to which type of muscle by using the answer code (options may be used more than once or not at all).
-length changes

Accepted Answer

A) isometric contraction 
B) isotonic contraction 
A) isometric contraction 
B) isotonic contraction

Question 16

What happens during a cross-bridge cycle in skeletal muscle?

Accepted Answer

A)  The cross bridge is energized as myosin ATPase activity hydrolyzes ATP. 
B)  The myosin cross bridge is able to bind with troponin molecule when Ca2+ pulls the troponin-tropomyosin complex aside. 
C)  The linkage between actin and the myosin cross bridge is broken at the end of the cross-bridge cycle as Mg2+ binds to the cross bridge. 
D)  The power strokes of all cross bridges are directed toward the periphery of the thick filament. 
A)  The cross bridge is energized as myosin ATPase activity hydrolyzes ATP. 
B)  The myosin cross bridge is able to bind with troponin molecule when Ca2+ pulls the troponin-tropomyosin complex aside. 
C)  The linkage between actin and the myosin cross bridge is broken at the end of the cross-bridge cycle as Mg2+ binds to the cross bridge. 
D)  The power strokes of all cross bridges are directed toward the periphery of the thick filament.

Question 17

Which statement is correct regarding smooth muscle?

Accepted Answer

A)  It composes the walls of the heart. 
B)  Its cells are multinucleated. 
C)  Its cells are spindle shaped. 
D)  Its cells lack actin and myosin. 
A)  It composes the walls of the heart. 
B)  Its cells are multinucleated. 
C)  Its cells are spindle shaped. 
D)  Its cells lack actin and myosin.

Question 18

Which statement about single-unit smooth muscle is correct?

Accepted Answer

A)  They contain no gap junctions and form functional syncytia. 
B)  They are self-excitable. 
C)  They are found in the walls of the ventricles. 
D)  They are found in the iris of the eye. 
A)  They contain no gap junctions and form functional syncytia. 
B)  They are self-excitable. 
C)  They are found in the walls of the ventricles. 
D)  They are found in the iris of the eye.

Question 19

Indicate which bands are being described in each statement by writing the appropriate letter(s) in the blank by using the answer code (options may be used more than once or not at all).
-composed of thick and thin filaments

Accepted Answer

A) A band 
B) I band 
C) H zone 
A) A band 
B) I band 
C) H zone

Question 20

Match the sarcomere component with the correct characteristic by using the answer code (options may be used more than once or not at all).
-light band

Accepted Answer

A) Z line 
B) A band 
C) I band 
D) H zone 
A) Z line 
B) A band 
C) I band 
D) H zone

Fast-glycolytic muscle fibres do not require as much oxygen use as slow-oxidative fibres.

For which activity are submaximal isometric contractions important?

What are in the I band of the sarcomere?

Indicate which type of muscle is associated with the property in question by using the answer code (options may be used more than once or not at all). -myosin must be phosphorylated before it can bind with actin

Indicate which type of muscle is associated with the property in question by using the answer code (options may be used more than once or not at all). -contains T tubules

Which muscle type is myogenic?

What would happen if ATP supplies became very low or not available in a muscle cell?

Summation events result from increasing amounts of cytoplasmic calcium levels.

Thick filaments are made up of the protein ,whereas thin filaments are composed of the three proteins ,,and .

Indicate the characteristics of the muscle-tension receptors by using the answer code (options may be used more than once or not at all). -monitors change in muscle length

In the body's lever systems,what are the fulcrums represented by?

MATCHING Indicate which of the muscle proteins in skeletal muscle is associated with the item in question by using the following code (options may be used more than once or not at all). -found in the A band

During the power stroke,all of the cross bridges on myosin do not stroke in unison when pulling the actin filaments.

Central fatigue of a muscle directly results from the accumulation of lactic acid in the muscle.

Indicate which characteristic applies to which type of muscle by using the answer code (options may be used more than once or not at all). -length changes

What happens during a cross-bridge cycle in skeletal muscle?

Which statement is correct regarding smooth muscle?

Which statement about single-unit smooth muscle is correct?

Indicate which bands are being described in each statement by writing the appropriate letter(s) in the blank by using the answer code (options may be used more than once or not at all). -composed of thick and thin filaments

Match the sarcomere component with the correct characteristic by using the answer code (options may be used more than once or not at all). -light band

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System

Principals of Endocrinology; The Central Endocrine Glands

Cardiac Physiology

Vascular Physiology

The Blood

Body Defences

The Respiratory System

The Urinary System

Fluid and Acid Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine Glands

The Reproductive System

Filters

Exam 6: Muscle Physiology

Fast-glycolytic muscle fibres do not require as much oxygen use as slow-oxidative fibres.

For which activity are submaximal isometric contractions important?

What are in the I band of the sarcomere?

Indicate which type of muscle is associated with the property in question by using the answer code (options may be used more than once or not at all). -myosin must be phosphorylated before it can bind with actin

Indicate which type of muscle is associated with the property in question by using the answer code (options may be used more than once or not at all). -contains T tubules

Which muscle type is myogenic?

What would happen if ATP supplies became very low or not available in a muscle cell?

Summation events result from increasing amounts of cytoplasmic calcium levels.

Thick filaments are made up of the protein ____________________,whereas thin filaments are composed of the three proteins ____________________,____________________,and ____________________.

Indicate the characteristics of the muscle-tension receptors by using the answer code (options may be used more than once or not at all). -monitors change in muscle length

In the body's lever systems,what are the fulcrums represented by?

MATCHING Indicate which of the muscle proteins in skeletal muscle is associated with the item in question by using the following code (options may be used more than once or not at all). -found in the A band

During the power stroke,all of the cross bridges on myosin do not stroke in unison when pulling the actin filaments.

Central fatigue of a muscle directly results from the accumulation of lactic acid in the muscle.

Indicate which characteristic applies to which type of muscle by using the answer code (options may be used more than once or not at all). -length changes

What happens during a cross-bridge cycle in skeletal muscle?

Which statement is correct regarding smooth muscle?

Which statement about single-unit smooth muscle is correct?

Indicate which bands are being described in each statement by writing the appropriate letter(s) in the blank by using the answer code (options may be used more than once or not at all). -composed of thick and thin filaments

Match the sarcomere component with the correct characteristic by using the answer code (options may be used more than once or not at all). -light band

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System

Principals of Endocrinology; The Central Endocrine Glands

Cardiac Physiology

Vascular Physiology

The Blood

Body Defences

The Respiratory System

The Urinary System

Fluid and Acid Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine Glands

The Reproductive System

Filters

Thick filaments are made up of the protein ,whereas thin filaments are composed of the three proteins ,,and .