CH 8 Nervous System Flashcards Preview

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Flashcards in CH 8 Nervous System Deck (21):
0

A projection from a neuron that makes connections with adjacent cells

Axon

1

Projection from a neuron that makes connections with a adjacent cell

Dendrite

2

Cell that transmit nervous system impulses

Neurons

3

The CNS includes the ______ pairs of cranial nerves that brach directly from the brain

12

4

The ______ pairs of spinal nerves that exit the spinal cord via the vertebra column are part of the PNS

31

5

What are the major regions of the brain

Cerebrum, Diencephalon ( thalamus and hypothalamus), Mesencephalon( midbrain), Pons, Cerebellum and Medulla Oblongata

6

The portion of the nervous system that consists of nerves that extend from the CNS to peripheral structures outside the CNS

Peripheral Nervous System

7

Nerves that carry commands from the brain to the muscle; also called Efferent Nerves

Motor Nerves

8

Nerves that carry impulses from the body to the brain and provide input to the brain about sensation that are felt; also called afferent nerves

Sensory Nerves

9

Specialized tissue that conducts electrical impulses between the brain and the rest of the body

Nervous System

10

C5 to T1 make up this

Brachial Plexus

11

Endocrine glands located on top of the kidneys that release adrenaline when stimulated by the sympathetic nervous system

Adrenal Glands

12

Fibers that carry sensory information from the periphery to the brain; also called afferent tracts

Ascending fibers

13

Fibers that carry motor impulses from the brain to the fibers of the peripheral nervous system; also called efferent tracts

Descending Fibers

14

Chemicals produced by the body that stimulate electrical reactions in adjacent neurons

Neurotransmitter

15

An enzyme that rapidly destroys acetylcholine once it has reached the target tissue

Acetylcholinestrease

16

Fluid produced in the ventricles of the brain that flows in the subarachnoid space and bathes the meninges

Cerebrospinal Fluid (CSF)

17

Specialized cells within hollow areas in the ventricles of the brain that produce CSF

Choroid Plexus

18

The 12 pairs of nerves that arise from the base of the brain

Cranial Nerves

19

The portion of the brain that plays an important role in hearing and memory

Temporal Lobe

20

A gap between nerve cells across which nervous stimuli are transmitted

Synapse