Ch. 7 Nervous System

Question 0

Axon

Answer 0

usually long process of a nerve fiber that generally conducts impulses away from the body of the nerve cell.

Question 1

Afferent neuron

Answer 1

cell that is specialized to conduct nerve impulses

Question 2

Central nervous system

Answer 2

The portion of the vertebrate nervous system consisting of the brain and spinal cord

Question 3

Cerebral hemisphere

Answer 3

Either of the two symmetrical halves of the cerebrum, as divided by the longitudinal cerebral fissure.

Question 4

Dendrites

Answer 4

Treelike processes of neurons, which receive impulses from other neurons and send them to the neuron’s cell body

Question 5

Efferent neurons

Answer 5

neuron conducting impulses outwards from the brain or spinal cord

Question 6

Gray matter

Answer 6

Brownish-gray nerve tissue, especially of the brain and spinal cord, composed of nerve cell bodies and their dendrites and some supportive tissue.

Question 7

Meninges

Answer 7

membranes that envelop the brain and spinal cord

Question 8

Nerve

Answer 8

Any of the cordlike bundles of fibers made up of neurons through which sensory stimuli and motor impulses pass between the brain or other parts of the central nervous system and the eyes, glands, muscles, and other parts of the body

Question 9

Neurons

Answer 9

Any of the impulse-conducting cells that constitute the brain, spinal column, and nerves in vertebrates, consisting of a nucleated cell body with one or more dendrites and a single axon

Question 10

Peripheral nervous system

Answer 10

The part of the vertebrate nervous system constituting the nerves outside the central nervous system and including the cranial nerves, spinal nerves, and sympathetic and parasympathetic nervous systems

Question 11

Polarization

Answer 11

The partial or complete polar separation of the positive and negative electric charges in a nuclear, atomic, molecular, or chemical system

Question 12

Reflex

Answer 12

an involuntary action or response