Question 1

Skeletal muscle develops from multinucleated cells called

Accepted Answer

A) fascicles. 
B) myoblasts. 
C) myofibrils. 
D) myotomes. 
E) fasciculi. 
A) fascicles. 
B) myoblasts. 
C) myofibrils. 
D) myotomes. 
E) fasciculi.

Question 2

Lack of acetylcholinesterase in the synaptic cleft would result in

Accepted Answer

A) a decrease in acetylcholine production by the motor neuron. 
B) continuous stimulation of the postsynaptic membrane. 
C) rapid degradation of acetylcholine. 
D) relaxation of the muscle. 
E) continuous stimulation of the presynaptic membrane. 
A) a decrease in acetylcholine production by the motor neuron. 
B) continuous stimulation of the postsynaptic membrane. 
C) rapid degradation of acetylcholine. 
D) relaxation of the muscle. 
E) continuous stimulation of the presynaptic membrane.

Question 3

A sarcomere is the

Accepted Answer

A) cell membrane of a muscle fiber. 
B) cytoplasm of muscle cells. 
C) structural and functional unit of the skeletal muscle cell. 
D) contractile thread that extends the length of the muscle fiber. 
E) protein strand composed of actin or myosin. 
A) cell membrane of a muscle fiber. 
B) cytoplasm of muscle cells. 
C) structural and functional unit of the skeletal muscle cell. 
D) contractile thread that extends the length of the muscle fiber. 
E) protein strand composed of actin or myosin.

Question 4

The diffusion of calcium ions into a smooth muscle cell does not depolarize the membrane so no action potential occurs.

Accepted Answer

A) True 
 B)False

Question 5

-What does "C" represent on the diagram?

Accepted Answer

A) threshold 
B) depolarization 
C) depolarization phase of action potential 
D) repolarization phase of action potential 
A) threshold 
B) depolarization 
C) depolarization phase of action potential 
D) repolarization phase of action potential

Question 6

Which of the following is NOT a function of skeletal muscle?

Accepted Answer

A) body movement 
B) maintenance of posture 
C) respiration 
D) constriction of organs 
E) production of heat 
A) body movement 
B) maintenance of posture 
C) respiration 
D) constriction of organs 
E) production of heat

Question 7

The outside of the resting plasma membrane is __________ relative to the inside of the resting plasma membrane.

Accepted Answer

A) positively charged 
B) negatively charged 
C) electrically neutral 
D) recharged 
E) None of these choices is correct. 
A) positively charged 
B) negatively charged 
C) electrically neutral 
D) recharged 
E) None of these choices is correct.

Question 8

A drug that interferes with the active transport of calcium ions from the sarcoplasm back into the sarcoplasmic reticulum would result in

Accepted Answer

A) relaxation of the muscle fiber. 
B) contraction with no relaxation. 
C) muscle hypertrophy. 
D) fibrosis of the muscle. 
E) an imbalance of blood calcium. 
A) relaxation of the muscle fiber. 
B) contraction with no relaxation. 
C) muscle hypertrophy. 
D) fibrosis of the muscle. 
E) an imbalance of blood calcium.

Question 9

The sarcoplasmic reticulum

Accepted Answer

A) stores calcium ions. 
B) shortens during muscle contraction. 
C) transmits nerve impulses to the myofibrils. 
D) connects adjacent sarcomeres. 
E) covers the muscle fiber. 
A) stores calcium ions. 
B) shortens during muscle contraction. 
C) transmits nerve impulses to the myofibrils. 
D) connects adjacent sarcomeres. 
E) covers the muscle fiber.

Skeletal muscle develops from multinucleated cells called

Lack of acetylcholinesterase in the synaptic cleft would result in

A sarcomere is the

The diffusion of calcium ions into a smooth muscle cell does not depolarize the membrane so no action potential occurs.

-What does "C" represent on the diagram?

Which of the following is NOT a function of skeletal muscle?

The outside of the resting plasma membrane is __________ relative to the inside of the resting plasma membrane.

A drug that interferes with the active transport of calcium ions from the sarcoplasm back into the sarcoplasmic reticulum would result in

The sarcoplasmic reticulum

The Human Organism

The Chemical Basis of Life

Cell Biology

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joints and Movement

Muscular System: Gross Anatomy

Functional Organization of Nervous Tissue

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: the Heart

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition,metabolism,and Temperature Regulation

Urinary System

Water,electrolyte,and Acid-Based Balance

Reproductive System

Development,growth,aging,and Genetics

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Exam 9: Muscular System: Histology and Physiology

Skeletal muscle develops from multinucleated cells called

Lack of acetylcholinesterase in the synaptic cleft would result in

A sarcomere is the

The diffusion of calcium ions into a smooth muscle cell does not depolarize the membrane so no action potential occurs.

-What does "C" represent on the diagram?

Which of the following is NOT a function of skeletal muscle?

The outside of the resting plasma membrane is __________ relative to the inside of the resting plasma membrane.

A drug that interferes with the active transport of calcium ions from the sarcoplasm back into the sarcoplasmic reticulum would result in

The sarcoplasmic reticulum

The Human Organism

The Chemical Basis of Life

Cell Biology

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joints and Movement

Muscular System: Gross Anatomy

Functional Organization of Nervous Tissue

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: the Heart

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition,metabolism,and Temperature Regulation

Urinary System

Water,electrolyte,and Acid-Based Balance

Reproductive System

Development,growth,aging,and Genetics

Filters