Question 1

In the diagram,which labeled structure contains motor proteins that convert the energy in ATP into mechanical movements?

Accepted Answer

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

Question 2

This is the outermost layer of connective tissue surrounding a skeletal muscle.

Accepted Answer

A) tendon 
B) ligament 
C) endomysium 
D) epimysium 
E) perimysium 
A) tendon 
B) ligament 
C) endomysium 
D) epimysium 
E) perimysium

Question 3

Which of the following regions of the sarcomere contain thick filaments?

Accepted Answer

A) zone of overlap 
B) A band 
C) H zone 
D) both A band and H zone 
E) All of these answer choices are correct. 
A) zone of overlap 
B) A band 
C) H zone 
D) both A band and H zone 
E) All of these answer choices are correct.

Question 4

Which of the following types of muscle tissue contract when excited by their own autorhythmic muscle fibers?

Accepted Answer

A) cardiac muscle 
B) slow twitch oxidative skeletal muscle 
C) multi-unit smooth muscle 
D) fast twitch glycolytic skeletal muscle 
E) All of these choices are correct. 
A) cardiac muscle 
B) slow twitch oxidative skeletal muscle 
C) multi-unit smooth muscle 
D) fast twitch glycolytic skeletal muscle 
E) All of these choices are correct.

Question 5

To stimulate skeletal muscle contraction,acetylcholine must cross the _____ of the neuromuscular junction and bind to receptors on the motor endplate.

Accepted Answer

A) node of Ranvier 
B) synaptic cleft 
C) sarcolemma 
D) synaptic end bulb 
E) transverse tubule 
A) node of Ranvier 
B) synaptic cleft 
C) sarcolemma 
D) synaptic end bulb 
E) transverse tubule

Question 6

In the diagram,the neurotransmitter,acetylcholine,is released from this area.

Accepted Answer

A) B 
B) C 
C) D 
D) G 
E) H 
A) B 
B) C 
C) D 
D) G 
E) H

Question 7

Which of the following types of muscle tissue is capable of undergoing the stress-relaxation response when they are stretched?

Accepted Answer

A) cardiac muscle fibers 
B) fast glycolytic fibers 
C) fast oxidative-glycolytic fibers 
D) slow oxidative fibers 
E) single-unit smooth muscle fibers 
A) cardiac muscle fibers 
B) fast glycolytic fibers 
C) fast oxidative-glycolytic fibers 
D) slow oxidative fibers 
E) single-unit smooth muscle fibers

Question 8

Which of the following microscopic structures is only found in the cardiac muscle tissue?

Accepted Answer

A) myosin 
B) tropomyosin 
C) sarcomeres 
D) intercalated discs 
E) striations 
A) myosin 
B) tropomyosin 
C) sarcomeres 
D) intercalated discs 
E) striations

Question 9

Which of the following regions of a sarcomere contain thin filaments?

Accepted Answer

A) I band 
B) A band 
C) H zone 
D) Both I band and A band. 
E) All of these answer choices are correct. 
A) I band 
B) A band 
C) H zone 
D) Both I band and A band. 
E) All of these answer choices are correct.

Question 10

Which figure exhibits a contraction of the biceps brachii muscle in which its length increases?

Accepted Answer

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

Question 11

The different types of muscle tissue differ from each other by

Accepted Answer

A) microscopic anatomy. 
B) location. 
C) type of Control. 
D) both microscopic anatomy and location. 
E) All of these choices are correct. 
A) microscopic anatomy. 
B) location. 
C) type of Control. 
D) both microscopic anatomy and location. 
E) All of these choices are correct.

Question 12

The contractile organelles of a skeletal muscle fiber are thread-like structures called

Accepted Answer

A) myofibrils. 
B) myoglobin. 
C) mitochondria. 
D) Z discs. 
E) M lines. 
A) myofibrils. 
B) myoglobin. 
C) mitochondria. 
D) Z discs. 
E) M lines.

Question 13

Which of the following structures are made of dense regular connective tissue?

Accepted Answer

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

Question 14

After the fusion of myoblasts,the muscle fiber loses its ability to do what?

Accepted Answer

A) grow 
B) lengthen 
C) contract 
D) go through cell division. 
E) all of the answer choices 
A) grow 
B) lengthen 
C) contract 
D) go through cell division. 
E) all of the answer choices

Question 15

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.

Question 16

During muscle contraction by the sliding filament mechanism,thin filaments are pulled towards the

Accepted Answer

A) Z disc. 
B) H zone. 
C) M line. 
D) A band. 
E) I band. 
A) Z disc. 
B) H zone. 
C) M line. 
D) A band. 
E) I band.

Question 17

In the diagram,where is the I band?

Accepted Answer

A) G 
B) H 
C) I 
D) J 
E) D 
A) G 
B) H 
C) I 
D) J 
E) D

Question 18

Which of following is a common characteristic of fast glycolytic (FG)skeletal muscle fibers?

Accepted Answer

A) large amount of myoglobin. 
B) many mitochondria. 
C) low concentration of creatine kinase in the sarcoplasm. 
D) slow myosin ATPase. 
E) high amount of glycogen in the sarcoplasm. 
A) large amount of myoglobin. 
B) many mitochondria. 
C) low concentration of creatine kinase in the sarcoplasm. 
D) slow myosin ATPase. 
E) high amount of glycogen in the sarcoplasm.

Question 19

During which period of a twitch contraction does the muscle action potential move along the sarcolemma of the muscle cell and trigger calcium release into the sarcoplasm?

Accepted Answer

A) latent period 
B) contraction period 
C) relaxation period 
D) absolute refractory period 
E) relative refractory period 
A) latent period 
B) contraction period 
C) relaxation period 
D) absolute refractory period 
E) relative refractory period

Question 20

Increasing the number of active motor units within a skeletal muscle is called

Accepted Answer

A) wave summation. 
B) fused tetanus. 
C) motor unit recruitment. 
D) muscle tone. 
E) flaccidity. 
A) wave summation. 
B) fused tetanus. 
C) motor unit recruitment. 
D) muscle tone. 
E) flaccidity.

Exam 10: Muscle Tissue

In the diagram,which labeled structure contains motor proteins that convert the energy in ATP into mechanical movements?

This is the outermost layer of connective tissue surrounding a skeletal muscle.

Which of the following regions of the sarcomere contain thick filaments?

Which of the following types of muscle tissue contract when excited by their own autorhythmic muscle fibers?

To stimulate skeletal muscle contraction,acetylcholine must cross the _____ of the neuromuscular junction and bind to receptors on the motor endplate.

In the diagram,the neurotransmitter,acetylcholine,is released from this area.

Which of the following types of muscle tissue is capable of undergoing the stress-relaxation response when they are stretched?

Which of the following microscopic structures is only found in the cardiac muscle tissue?

Which of the following regions of a sarcomere contain thin filaments?

Which figure exhibits a contraction of the biceps brachii muscle in which its length increases?

The different types of muscle tissue differ from each other by

The contractile organelles of a skeletal muscle fiber are thread-like structures called

Which of the following structures are made of dense regular connective tissue?

After the fusion of myoblasts,the muscle fiber loses its ability to do what?

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

During muscle contraction by the sliding filament mechanism,thin filaments are pulled towards the

In the diagram,where is the I band?

Which of following is a common characteristic of fast glycolytic (FG)skeletal muscle fibers?

During which period of a twitch contraction does the muscle action potential move along the sarcolemma of the muscle cell and trigger calcium release into the sarcoplasm?

Increasing the number of active motor units within a skeletal muscle is called

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

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