Question 1

What structures form a motor unit?

Accepted Answer

A)  Several motor neurons and one muscle fiber 
B)  One motor neuronand several muscle fibers 
C)  Several motor neurons and several muscle fibers 
A)  Several motor neurons and one muscle fiber 
B)  One motor neuronand several muscle fibers 
C)  Several motor neurons and several muscle fibers

Question 2

Which of the following is NOT a basic component of a lever?

Accepted Answer

A)  Rigid bar 
B)  Fulcrum 
C)  Force 
D)  Handle 
E)  Resistance 
A)  Rigid bar 
B)  Fulcrum 
C)  Force 
D)  Handle 
E)  Resistance

Question 3

The enlargement of muscle fibers as a result of exercise is called _______________.

Accepted Answer

The answer of The enlargement of muscle fibers as a...

Question 4

What forms the myofibrils of skeletal muscle cells?

Accepted Answer

A)  Actin and myosin 
B)  ATP and ADP 
C)  Troponin and tropomyosin 
D)  Fascia and tendons 
E)  Perimysium and endomysium 
A)  Actin and myosin 
B)  ATP and ADP 
C)  Troponin and tropomyosin 
D)  Fascia and tendons 
E)  Perimysium and endomysium

Question 5

Which statement describes multiunit smooth muscle?

Accepted Answer

A)  Composed of sheets of muscle cells 
B)  Displays rhythmicity 
C)  Found within the walls of the stomach and intestines 
D)  Responds to stimulation by neurons and certain hormones 
A)  Composed of sheets of muscle cells 
B)  Displays rhythmicity 
C)  Found within the walls of the stomach and intestines 
D)  Responds to stimulation by neurons and certain hormones

Question 6

During anaerobic respiration, pyruvic acidmolecules are converted into molecules of ____________.

Accepted Answer

The answer of During anaerobic respiration, pyruvic acidmolecules are converted...

Question 7

In skeletal muscle fibers, what is the source of the calcium ions that are released into the sarcoplasm to bind with troponin, resulting in contraction?

Accepted Answer

A)  Extracellular fluid 
B)  Sarcoplasmic reticulum 
C)  Mitochondria 
D)  Golgi apparatus 
A)  Extracellular fluid 
B)  Sarcoplasmic reticulum 
C)  Mitochondria 
D)  Golgi apparatus

Question 8

What is a description of the region known as the motor end plate?

Accepted Answer

A)  It has many openings leading into transverse tubules. 
B)  Mitochondria are abundant. 
C)  Synaptic vesicles are abundant. 
D)  It functions to release neurotransmitter molecules. 
A)  It has many openings leading into transverse tubules. 
B)  Mitochondria are abundant. 
C)  Synaptic vesicles are abundant. 
D)  It functions to release neurotransmitter molecules.

Question 9

What is an alternate name for a skeletal muscle cell?

Accepted Answer

A)  Myofibril 
B)  Myofilament 
C)  Myosin 
D)  Muscle fiber 
A)  Myofibril 
B)  Myofilament 
C)  Myosin 
D)  Muscle fiber

Question 10

Skeletal muscle cells appear striated because of the presence of what parallel bundles?

Accepted Answer

A)  Sarcomeres 
B)  Z lines 
C)  Myosin 
D)  Myofibrils 
E)  Transverse tubules 
A)  Sarcomeres 
B)  Z lines 
C)  Myosin 
D)  Myofibrils 
E)  Transverse tubules

What structures form a motor unit?

Which of the following is NOT a basic component of a lever?

The enlargement of muscle fibers as a result of exercise is called _______________.

What forms the myofibrils of skeletal muscle cells?

Which statement describes multiunit smooth muscle?

During anaerobic respiration, pyruvic acidmolecules are converted into molecules of ____________.

In skeletal muscle fibers, what is the source of the calcium ions that are released into the sarcoplasm to bind with troponin, resulting in contraction?

What is a description of the region known as the motor end plate?

What is an alternate name for a skeletal muscle cell?

Skeletal muscle cells appear striated because of the presence of what parallel bundles?

Introduction to Human Anatomy and Physiology

Chemical Basis of Life

Cells

Cellular Metabolism

Tissues

Integumentary System

Skeletal System

Pregnancy, Growth, Development, and Genetics

Nervous System

The Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Digestion and Nutrition

Respiratory System

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive Systems

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Exam 8: Muscular System

What structures form a motor unit?

Which of the following is NOT a basic component of a lever?

The enlargement of muscle fibers as a result of exercise is called _______________.

What forms the myofibrils of skeletal muscle cells?

Which statement describes multiunit smooth muscle?

During anaerobic respiration, pyruvic acidmolecules are converted into molecules of ____________.

In skeletal muscle fibers, what is the source of the calcium ions that are released into the sarcoplasm to bind with troponin, resulting in contraction?

What is a description of the region known as the motor end plate?

What is an alternate name for a skeletal muscle cell?

Skeletal muscle cells appear striated because of the presence of what parallel bundles?

Introduction to Human Anatomy and Physiology

Chemical Basis of Life

Cells

Cellular Metabolism

Tissues

Integumentary System

Skeletal System

Pregnancy, Growth, Development, and Genetics

Nervous System

The Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Digestion and Nutrition

Respiratory System

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive Systems

Filters