Question 1

Which of the following types of abnormal contractions of skeletal muscle may be caused by holding a position for a prolonged period?

Accepted Answer

A) spasm 
B) fasciculation 
C) tremor 
D) fibrillation 
E) cramp 
A) spasm 
B) fasciculation 
C) tremor 
D) fibrillation 
E) cramp

Question 2

Myofibrils contain

Accepted Answer

A) contractile proteins. 
B) regulatory proteins. 
C) structural proteins. 
D) all of these answers are correct. 
E) none of these answers are correct. 
A) contractile proteins. 
B) regulatory proteins. 
C) structural proteins. 
D) all of these answers are correct. 
E) none of these answers are correct.

Question 3

Which figure exhibits concentric contraction of the biceps brachii muscle?

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 4

In the diagram,where is the axon terminal?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Question 5

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

Question 6

After prolonged strenuous exercise has stopped,heavy breathing will often continue for several minutes in order to provide the oxygen needed to

Accepted Answer

A) convert the lactic acid produced during exercise back into glycogen. 
B) resynthesize creatine phosphate. 
C) replace oxygen displaced from muscle myoglobin. 
D) All of these choices 
E) None of these choices 
A) convert the lactic acid produced during exercise back into glycogen. 
B) resynthesize creatine phosphate. 
C) replace oxygen displaced from muscle myoglobin. 
D) All of these choices 
E) None of these choices

Question 7

Which portion of this myogram shows a single twitch of the muscle?

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 8

This is the least powerful type of skeletal muscle fiber.

Accepted Answer

A) slow oxidative fiber 
B) fast oxidative fiber 
C) fast glycolytic fiber 
D) slow glycolytic fiber 
E) None of these choices. 
A) slow oxidative fiber 
B) fast oxidative fiber 
C) fast glycolytic fiber 
D) slow glycolytic fiber 
E) None of these choices.

Question 9

In embryonic muscle development,what happens to the somites?

Accepted Answer

Somite cells differe

Question 10

Skeletal muscle contraction will continue to occur as long as the following chemicals are available in the cytosol of the muscle fiber.

Accepted Answer

A) ATP and acetylcholine (ACh) 
B) calcium ions and ATP 
C) ACh and potassium ions 
D) sodium ions and ATP 
E) calcium and ACh 
A) ATP and acetylcholine (ACh) 
B) calcium ions and ATP 
C) ACh and potassium ions 
D) sodium ions and ATP 
E) calcium and ACh

Question 11

Which of the labeled structures on the diagram holds muscles with similar functions together,allows free movement of muscles,carries nerves,blood vessels and lymphatic vessels,and fills spaces between muscles?

Accepted Answer

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

Question 12

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

Accepted Answer

Upon neural stimulation of the muscle,Ca

Question 13

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.

Question 14

Compare and contrast the structural characteristics of the three different types of muscular tissue.

Accepted Answer

Both cardiac and skeletal muscle tissues

Question 15

Which of the following statements does NOT accurately describe aerobic cellular respiration in skeletal muscles?

Accepted Answer

A) Pyruvic acid generated by glycolysis enters the mitochondria. 
B) O2 is essential. 
C) CO2 is produced as a waste product. 
D) Lactic acid is continually produced. 
E) Can be used to generate ATP from fats,proteins or carbohydrates. 
A) Pyruvic acid generated by glycolysis enters the mitochondria. 
B) O2 is essential. 
C) CO2 is produced as a waste product. 
D) Lactic acid is continually produced. 
E) Can be used to generate ATP from fats,proteins or carbohydrates.

Exam 10: Muscle Tissue

Which of the following types of abnormal contractions of skeletal muscle may be caused by holding a position for a prolonged period?

Myofibrils contain

Which figure exhibits concentric contraction of the biceps brachii muscle?

In the diagram,where is the axon terminal?

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

After prolonged strenuous exercise has stopped,heavy breathing will often continue for several minutes in order to provide the oxygen needed to

Which portion of this myogram shows a single twitch of the muscle?

This is the least powerful type of skeletal muscle fiber.

In embryonic muscle development,what happens to the somites?

Skeletal muscle contraction will continue to occur as long as the following chemicals are available in the cytosol of the muscle fiber.

Which of the labeled structures on the diagram holds muscles with similar functions together,allows free movement of muscles,carries nerves,blood vessels and lymphatic vessels,and fills spaces between muscles?

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

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

Compare and contrast the structural characteristics of the three different types of muscular tissue.

Which of the following statements does NOT accurately describe aerobic cellular respiration in skeletal muscles?

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

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