Question 1

In the diagram,individual muscle fibers are covered by this layer.

Accepted Answer

A) K 
B) I 
C) L 
D) M 
E) A 
A) K 
B) I 
C) L 
D) M 
E) A C

Question 2

Smooth muscle tone is maintained by the prolonged presence of _____ in the muscle cell's cytosol?

Accepted Answer

A) ATP 
B) calcium ions 
C) phosphate ions 
D) myoglobin 
E) None of these choices. 
A) ATP 
B) calcium ions 
C) phosphate ions 
D) myoglobin 
E) None of these choices. B

Question 3

Leg muscles are predominantly composed of which type of muscle fiber?

Accepted Answer

A) slow oxidative 
B) fast glycolytic 
C) fast oxidative-glycolytic 
D) slow glycolytic 
E) fast oxidative 
A) slow oxidative 
B) fast glycolytic 
C) fast oxidative-glycolytic 
D) slow glycolytic 
E) fast oxidative C

Question 4

Which area of the myogram shows sustained contraction with partial relaxation?

Accepted Answer

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

Question 5

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

Question 6

Which of the following consists of a somatic motor neuron and all the skeletal muscle fibers it stimulates?

Accepted Answer

A) sarcomere 
B) motor unit 
C) neuromuscular junction 
D) muscle unit 
E) multi-unit smooth muscle 
A) sarcomere 
B) motor unit 
C) neuromuscular junction 
D) muscle unit 
E) multi-unit smooth muscle

Question 7

What are the three ways that ATP can be produced in muscle fibers?

Accepted Answer

ATP can be produced from creat

Question 8

What is the major difference between the two types of smooth muscle tissue?

Accepted Answer

In single-unit smooth muscle tissue,acti

Question 9

In the diagram,where would you find stored Ca2+?

Accepted Answer

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

Question 10

Which area of the myogram shows a sustained contraction where individual twitches are indiscernible?

Accepted Answer

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

Question 11

Which of the following describe the regeneration capacity of cardiac muscle cells?

Accepted Answer

A) limited,via satellite cells 
B) limited,under certain conditions 
C) considerable (compared with other muscle cells,but limited compared with epithelium),via pericytes 
D) all of these are correct 
E) none of these are correct 
A) limited,via satellite cells 
B) limited,under certain conditions 
C) considerable (compared with other muscle cells,but limited compared with epithelium),via pericytes 
D) all of these are correct 
E) none of these are correct

Question 12

In the diagram,which structure(s)moves towards the center of the sarcomere (closer together)when the fiber contracts?

Accepted Answer

A) A 
B) D 
C) J 
D) Both A and D. 
E) None of these are correct. 
A) A 
B) D 
C) J 
D) Both A and D. 
E) None of these are correct.

Question 13

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 14

Calcium ions are released from the sarcoplasmic reticulum into the cytosol

Accepted Answer

A) at the beginning of a contraction. 
B) in response to acetylcholine binding to Ca2+ release channels. 
C) by active transport using Ca2+ pumps in the SR membrane. 
D) after the contraction ends. 
E) All of these answers are correct. 
A) at the beginning of a contraction. 
B) in response to acetylcholine binding to Ca2+ release channels. 
C) by active transport using Ca2+ pumps in the SR membrane. 
D) after the contraction ends. 
E) All of these answers are correct.

Question 15

Which property of muscle gives it the ability to stretch without damage?

Accepted Answer

A) electrical excitability 
B) contractility 
C) extensibility 
D) elasticity 
E) thermogenesis 
A) electrical excitability 
B) contractility 
C) extensibility 
D) elasticity 
E) thermogenesis

Question 16

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 17

In the diagram,a tendon is formed by the merging of the following structures

Accepted Answer

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

Question 18

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.

Question 19

Which of the following is 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 20

In the diagram,what is the basic functional unit of a myofibril?

Accepted Answer

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

Exam 10: Muscle Tissue

In the diagram,individual muscle fibers are covered by this layer.

Smooth muscle tone is maintained by the prolonged presence of _____ in the muscle cell's cytosol?

Leg muscles are predominantly composed of which type of muscle fiber?

Which area of the myogram shows sustained contraction with partial relaxation?

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

Which of the following consists of a somatic motor neuron and all the skeletal muscle fibers it stimulates?

What are the three ways that ATP can be produced in muscle fibers?

What is the major difference between the two types of smooth muscle tissue?

In the diagram,where would you find stored Ca2+?

Which area of the myogram shows a sustained contraction where individual twitches are indiscernible?

Which of the following describe the regeneration capacity of cardiac muscle cells?

In the diagram,which structure(s)moves towards the center of the sarcomere (closer together)when the fiber contracts?

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

Calcium ions are released from the sarcoplasmic reticulum into the cytosol

Which property of muscle gives it the ability to stretch without damage?

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

In the diagram,a tendon is formed by the merging of the following structures

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

Which of the following is referred to as the period of lost excitability in skeletal muscle fibers?

In the diagram,what is the basic functional unit of a myofibril?

An Introduction to the Human Body

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System Unit Ii: Principles of Support and Movement

The Skeletal System: Bone Tissue

The Skeletal System: the Axial Skeleton

The Skeletal System: the Appendicular Skeleton

Joints

The Muscular System Unit Iii: Control Systems of the Human Body

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 Unit Iv: Maintenance of the Human Body

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 Respiratory System

The Digestive System

Metabolism

The Urinary System

Fluid, Electrolyte, and Acid-Base Homeostasis Unit V: Continuity

The Reproductive Systems

Development and Inheritance

Filters

In the diagram,where would you find stored Ca²⁺?