Question 1

In the diagram,which structure helps return a stretched sarcomere to its resting length?

Accepted Answer

A) B 
B) C 
C) E 
D) Both B and C 
E) All of these choices are correct. 
A) B 
B) C 
C) E 
D) Both B and C 
E) All of these choices are correct. C

Question 2

Which of the following functions as a motor protein in all three types of muscle tissue?

Accepted Answer

A) actin 
B) myosin 
C) troponin 
D) titin 
E) tropomyosin 
A) actin 
B) myosin 
C) troponin 
D) titin 
E) tropomyosin B

Question 3

Which of the following is NOT a major function of muscle tissue?

Accepted Answer

A) moving blood throughout the body 
B) generating heat through contractions 
C) stabilizing the movement of joints 
D) promoting movement of body structures 
E) Production of Vitamins. 
A) moving blood throughout the body 
B) generating heat through contractions 
C) stabilizing the movement of joints 
D) promoting movement of body structures 
E) Production of Vitamins. E

Question 4

Cross bridges are formed during muscle contraction when _____ on the thick filaments binds to ______ on the thin filaments.

Accepted Answer

A) myosin;troponin 
B) myosin;actin 
C) actin;myosin 
D) actin;tropomyosin 
E) myosin;tropomyosin 
A) myosin;troponin 
B) myosin;actin 
C) actin;myosin 
D) actin;tropomyosin 
E) myosin;tropomyosin

Question 5

Discuss the steps involved in contraction of smooth muscle and explain why smooth muscle have a slower contraction cycle.

Accepted Answer

The contraction of smooth muscle involve

Question 6

Which of the following is NOT seen in exercise-induced muscle damage?

Accepted Answer

A) torn sarcolemmas 
B) damaged myofibrils 
C) sore muscles 
D) progressive degeneration of muscles 
E) disrupted Z-discs 
A) torn sarcolemmas 
B) damaged myofibrils 
C) sore muscles 
D) progressive degeneration of muscles 
E) disrupted Z-discs

Question 7

In the diagram,the thin filaments are found in the region labeled ______.

Accepted Answer

A) C 
B) E 
C) B 
D) Both C and E 
E) All of these choices 
A) C 
B) E 
C) B 
D) Both C and E 
E) All of these choices

Question 8

Which of the following proteins is used to reinforce the sarcolemma and to help transmit the tension generated by the sarcomeres to the tendons?

Accepted Answer

A) troponin 
B) tropomyosin 
C) myosin 
D) actin 
E) dystrophin 
A) troponin 
B) tropomyosin 
C) myosin 
D) actin 
E) dystrophin

Question 9

Which is a NOT a side-effect of anabolic steroid use by female athletes?

Accepted Answer

A) sterility 
B) baldness 
C) facial hair growth 
D) menstrual irregularities 
E) deepening of the voice 
A) sterility 
B) baldness 
C) facial hair growth 
D) menstrual irregularities 
E) deepening of the voice

Question 10

In the diagram,where would you find the largest amount of glycogen?

Accepted Answer

A) A 
B) D 
C) F 
D) K 
E) B 
A) A 
B) D 
C) F 
D) K 
E) B

Question 11

Which is a NOT a side-effect of anabolic steroid use by male athletes?

Accepted Answer

A) sterility 
B) baldness 
C) diminished testosterone secretion 
D) deepening of the voice 
E) atrophy of testes 
A) sterility 
B) baldness 
C) diminished testosterone secretion 
D) deepening of the voice 
E) atrophy of testes

Question 12

In the diagram,which labeled structure contains regulatory proteins that respond to rising Ca2+ concentrations in the cytoplasm of the skeletal muscle cell?

Accepted Answer

A) B 
B) C 
C) E 
D) All of these choices are correct. 
E) None of these choices are correct. 
A) B 
B) C 
C) E 
D) All of these choices are correct. 
E) None of these choices are correct.

Question 13

In the diagram,where is the axon collateral?

Accepted Answer

A) B 
B) C 
C) D 
D) E 
E) None of these choices 
A) B 
B) C 
C) D 
D) E 
E) None of these choices

Question 14

In neuromuscular junctions,synaptic vesicles containing acetylcholine are found suspended in the cytosol of

Accepted Answer

A) myelin bulbs. 
B) neuromuscular bulbs. 
C) synaptic end bulbs. 
D) axon collateral bulbs. 
E) tubule bulbs. 
A) myelin bulbs. 
B) neuromuscular bulbs. 
C) synaptic end bulbs. 
D) axon collateral bulbs. 
E) tubule bulbs.

Question 15

Which of the following disorders is characterized by the wasting away of muscles due to the progressive loss of myofibrils?

Accepted Answer

A) muscular hypertrophy 
B) muscular atrophy 
C) fibromyalgia 
D) myasthenia gravis 
E) tremors 
A) muscular hypertrophy 
B) muscular atrophy 
C) fibromyalgia 
D) myasthenia gravis 
E) tremors

Question 16

This is also referred to as the period of lost excitability in skeletal muscle fibers.

Accepted Answer

A) refractory period 
B) contraction period 
C) latent period 
D) relaxation period 
E) wave summation 
A) refractory period 
B) contraction period 
C) latent period 
D) relaxation period 
E) wave summation

Question 17

What is being shown by the axis labeled E?

Accepted Answer

A) time 
B) tetanus 
C) force of contraction 
D) twitch factor 
E) wave summation 
A) time 
B) tetanus 
C) force of contraction 
D) twitch factor 
E) wave summation

Question 18

Which of the following are commonly used to produce ATP during skeletal muscle contraction?

Accepted Answer

A) creatine phosphate 
B) anaerobic cellular respiration 
C) aerobic cellular respiration 
D) All of these choices are correct. 
E) None of these choices are correct. 
A) creatine phosphate 
B) anaerobic cellular respiration 
C) aerobic cellular respiration 
D) All of these choices are correct. 
E) None of these choices are correct.

Question 19

A structural protein that is associated with thin filaments and serves to anchor the thin filament to the Z-disc is called

Accepted Answer

A) nebulin. 
B) titin. 
C) myomesin. 
D) dystrophin. 
E) tropomyosin. 
A) nebulin. 
B) titin. 
C) myomesin. 
D) dystrophin. 
E) tropomyosin.

Question 20

A brief contraction of all muscle fibers in a motor unit in response to a single action potential moving down the somatic motor neuron is known as

Accepted Answer

A) isometric contraction. 
B) isotonic contraction. 
C) tetany. 
D) refractory period. 
E) twitch contraction. 
A) isometric contraction. 
B) isotonic contraction. 
C) tetany. 
D) refractory period. 
E) twitch contraction.

Exam 10: Muscle Tissue

In the diagram,which structure helps return a stretched sarcomere to its resting length?

Which of the following functions as a motor protein in all three types of muscle tissue?

Which of the following is NOT a major function of muscle tissue?

Cross bridges are formed during muscle contraction when _____ on the thick filaments binds to ______ on the thin filaments.

Discuss the steps involved in contraction of smooth muscle and explain why smooth muscle have a slower contraction cycle.

Which of the following is NOT seen in exercise-induced muscle damage?

In the diagram,the thin filaments are found in the region labeled ______.

Which of the following proteins is used to reinforce the sarcolemma and to help transmit the tension generated by the sarcomeres to the tendons?

Which is a NOT a side-effect of anabolic steroid use by female athletes?

In the diagram,where would you find the largest amount of glycogen?

Which is a NOT a side-effect of anabolic steroid use by male athletes?

In the diagram,which labeled structure contains regulatory proteins that respond to rising Ca2+ concentrations in the cytoplasm of the skeletal muscle cell?

In the diagram,where is the axon collateral?

In neuromuscular junctions,synaptic vesicles containing acetylcholine are found suspended in the cytosol of

Which of the following disorders is characterized by the wasting away of muscles due to the progressive loss of myofibrils?

This is also referred to as the period of lost excitability in skeletal muscle fibers.

What is being shown by the axis labeled E?

Which of the following are commonly used to produce ATP during skeletal muscle contraction?

A structural protein that is associated with thin filaments and serves to anchor the thin filament to the Z-disc is called

A brief contraction of all muscle fibers in a motor unit in response to a single action potential moving down the somatic motor neuron is known as

An Introduction to the Human Body

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

The Skeletal System: Bone Tissue

The Skeletal System: The Axial Skeleton

The Skeletal System: The Appendicular Skeleton

Joints

The Muscular System

Nervous Tissue

The Spinal Cord and Spinal Nerves

The Brain and Cranial Nerves

The Autonomic Nervous System

Sensory, Motor and Integrative Systems

The Special Senses

The Endocrine System

The Cardiovascular System: The Blood

The Cardiovascular System: The Heart

The Cardiovascular System: Blood Vessels and Hemodynamics

The Lymphatic System, Nonspecific Resistance to Disease, and Immunity

The Digestive System

Metabolism

The Urinary System

The Reproductive Systems

Development and Inheritance

Filters

Cross bridges are formed during muscle contraction when _ on the thick filaments binds to __ on the thin filaments.