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Flashcards in Nervous System Deck (40)
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1

What is the basic unit of the nervous system?

Neuron

2

What are the 2 divisions of the nervous system?

Central Nervous System (CNS)
Peripheral Nervous System (PNS)

3

Chemical substances that are released into synapses to relay information are called what?

Neuro-transmitters

4

What is the protective covering over some nerve cells including parts of the spinal cord that acts as an electrical insulator?

Myelin

5

Which cells of the nervous system are responsible for the formation of myelin?

Oligodendrocytes (CNS)
Schwann cells (PNS)

6

What are the interruptions in myelin called that allows nerve impulses to travel quicker and more efficient?

Nodes of Ranvier

7

What is the clear, colorless ultrafiltrate that nourishes, cools, and cushions the CNS?

Cerebrospinal Fluid (CSF)

8

What are the 3 main divisions of the brain?

Cerebrum
Cerebellum
Brainstem

9

Which main division of the brain is the largest part?

Cerebrum

10

What is the space between two neurons or a neuron and a receptor called?

Synapse

11

What is the term used for inflammation of the root of a spinal nerve?

Radiculitis

12

What are meninges?

Three-Layered membrane that lines the CNS

13

What is the division of the autonomic nervous system that is concerned with body functions under emergency or
stress?

Sympathetic

14

What is a network of intersecting nerves called?

Plexus

15

What type of neuron carries impulses away from the CNS and toward the muscles?

Efferent (Motor)

16

What is an automatic, involuntary response to change called?

Reflex

17

What does analgesia mean?

Without Pain

18

What is the term used for inflammation of the gray matter of the spinal cord?

Poliomyelitis

19

What does ataxia mean?

Without Coordination/Stumbling

20

What are knotlike mass of neuron cell bodies in the peripheral nervous system called?

Ganglion

21

What is another term for depressed?

Obtunded

22

What is the term used for inflammation of the membranes surrounding the brain and spinal cord?

Meningitis

23

What is concious proprioceptive deficit commonly called?

Knuckling

24

What is the medical term for crossing?

Chiasm

25

What are small cavities in the brain called?

Ventricles

26

What is the term used for alert?

Concious

27

What does BAR stand for?

Bright/Alert/Responsive

28

What is the term used for a deep state of unconciousness?

Coma

29

What does lethargy mean?

Indifferent/Drowsy

30

What is the term used for when an animal appears to be mentally confused?

Disoriented