Exam 11: Fundamentals of the Nervous System and Nervous Tissue

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Imagine a neuron that has several hundred axonal knobs impinging on it.The majority of these axonal knobs are shown to be "firing." However,the neuron in question does not transmit an impulse.Give a valid explanation of why this could occur.

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Question 1

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Both excitatory and inhibitory potentials impinge on neurons.Inhibitory postsynaptic potentials IPSPs)are "firing," but due to the neurotransmitter released and its action,the postsynaptic neuron is inhibited from "firing" hyperpolarized).

What are ciliated CNS neuroglia that play an active role in moving the cerebrospinal fluid called?

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What mechanism is responsible for axonal transport?

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Question 3

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ATP- dependent "motor" proteins such as kinesin,dynein,and myosin are responsible.They propel cellular components along microtubules.

What is the role of acetylcholinesterase?

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Question 4

Collections of nerve cell bodies outside the central nervous system are called .

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Question 5

Which of the following is true about the movement of ions across excitable living membranes?

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Question 6

ATP neurotransmitters have what basic effect on the body?

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Question 7

Saltatory conduction is made possible by _ .

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Question 8

Which of the following will occur when an excitatory postsynaptic potential EPSP)is being generated on the dendritic membrane?

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Question 9

Because all action potentials are alike,how does the brain separate situations that require immediate attention from ordinary "positional" reports?

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Question 10

Bipolar neurons are commonly .

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Question 11

Which of the following is false or incorrect?

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Question 12

Define neurotransmitter.Name two amino acid neurotransmitters,two catecholamines,and two peptides.

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Question 13

is a disease that gradually destroys the myelin sheaths of neurons in the CNS,particularly in young adults.

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Question 14

Which of the following is not true of graded potentials?

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Question 15

Which of the following is not a special characteristic of neurons?

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Question 16

Select the correct statement regarding synapses.

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Question 17

Which of the following describes the nervous system integrative function?

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Question 18

That part of the nervous system that is voluntary and conducts impulses from the CNS to the skeletal muscles is the nervous system.

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Question 19

Schwann cells are functionally similar to _.

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Question 20

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Exam 11: Fundamentals of the Nervous System and Nervous Tissue

Imagine a neuron that has several hundred axonal knobs impinging on it.The majority of these axonal knobs are shown to be "firing." However,the neuron in question does not transmit an impulse.Give a valid explanation of why this could occur.

What are ciliated CNS neuroglia that play an active role in moving the cerebrospinal fluid called?

What mechanism is responsible for axonal transport?

What is the role of acetylcholinesterase?

Collections of nerve cell bodies outside the central nervous system are called .

Which of the following is true about the movement of ions across excitable living membranes?

ATP neurotransmitters have what basic effect on the body?

Saltatory conduction is made possible by _ .

Which of the following will occur when an excitatory postsynaptic potential EPSP)is being generated on the dendritic membrane?

Because all action potentials are alike,how does the brain separate situations that require immediate attention from ordinary "positional" reports?

Bipolar neurons are commonly .

Which of the following is false or incorrect?

Define neurotransmitter.Name two amino acid neurotransmitters,two catecholamines,and two peptides.

is a disease that gradually destroys the myelin sheaths of neurons in the CNS,particularly in young adults.

Which of the following is not true of graded potentials?

Which of the following is not a special characteristic of neurons?

Select the correct statement regarding synapses.

Which of the following describes the nervous system integrative function?

That part of the nervous system that is voluntary and conducts impulses from the CNS to the skeletal muscles is the nervous system.

Schwann cells are functionally similar to _.

The Human Body: an Orientation

Chemistry Comes Alive

Cells: the Living Units

Tissues: the Living Fabric

The Integumentary System

Bones and Skeletal Tissues

The Skeleton

Joints

Muscles and Muscle Tissue

The Muscular System

The Central Nervous System

The Peripheral Nervous System and Reflex Activity

The Autonomic Nervous System

The Endocrine System

Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels

The Lymphatic System and Lymphoid Organs and Tissues

The Respiratory System

The Digestive System

Nutrition,metabolism,and Body Temperature Regulation

The Urinary System

Fluid,electrolyte,and Acid-Based Balance

The Reproductive System

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