Nervous Tissue Flashcards Preview

Anatomy And Physiology > Nervous Tissue > Flashcards

Flashcards in Nervous Tissue Deck (26):
1

Peripheral nervous system

All nervous tissue around CNS

2

Ganglia

Neuron cells outside brain

3

Nerve

Bundle of hundreds to thousands of axons

4

Synapse

Site of communication between dendrites and axons

5

Action potential

Electrical signal traveling along service of neuron membrane

6

Stimulus

Any change in environment initiating action potential

7

Synaptic vesicle

Store neurotransmitters

8

White matter

Composed of myelinated axons

9

Gray matter

Composed of neuronal cell bodies, dendrites, unmyelinated axons, axons terminals, and neuralgia

10

Types of Neuroglia

1. Astrocytes
2. Oligodendrocytes
3. Microglia
4. Ependymal
5. Schwann Cells
6. Satellite cells

11

Function of somatic nervous system

Concert information to CNS for senses. Conduct impulses for skeletal muscles

12

Function of autonomic nervous system

Convey information from autonomic sensory receptors. Conduct impulses to smooth and cardiac muscle

13

Enteric nervous system

Brain of gut. Involuntary

14

Astrocytes

Strength and isolate neuron from harm. Secrete chemicals. Learning and memory

15

Oligodendrocytes

Myelin sheath

16

Microglia

Function as phagocyte

17

Ependymal cells

Line ventricles protecting spinal cord and brain

18

Schwann cell

Form myelin sheath

19

Satellite cell

Provide structure and regulate exchange of material

20

Sensory vs motor

Sensory send pulse to and motor takes it to be taken care of

21

Dendrite

Receiving portion of neuron

22

Axon

Send nerve impulse toward

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Myelin sheath

Lipid and protein coverage

24

Schwann cell

Myelinates single axon

25

Axons terminal

Axon connecting to dendrite

26

Central nervous system

Brain and Spinal cord