Nervous System

Front 1

Functions of nervous system

Back 1

1. Receiving sensory input

2. Integrating information

3. Controlling muscles and glands

4. Maintaining Homeostasis

5. Establishing and maintaining mental activity

Front 2

Consists of the brain and spinal cord

Back 2

CNS

Front 3

Consists all thr nervous tissue outside the CNS, including nerves and ganglia.

Back 3

PNS

Front 4

Afferent (toward) division

Back 4

Sensory division

Front 5

Efferent (away) division

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Motor division

Front 6

Neurons that transmit action potentials from the periphery to the cns are called

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Sensory neurons

Front 7

Is an excellent insulator that prevents almost all ion movement across the cell membrane

Back 7

Myelin

Front 8

Ganglion means

Back 8

Swelling or knot

Front 9

True or false

A typical small nerve, which consists of axons of multipke neurons, usually contain more unmyelinated axons than myelinated axons

Back 9

True

Front 10

Surface of the brain is called

Back 10

Cortex

Front 11

In the pns, a cluster of neuron cell bodies is called

Back 11

Ganglion

Front 12

Consists of groups of neuron cell bodies and their dendrites, where there is very little myelin.

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Gray matter

Front 13

Consists of bundles of parallel axons with their myelin sheaths, which are whitish in color.

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White matter

Front 14

White matter forms

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Nerve tracts or conduction pathway

Front 15

Contribute to blood brain barrier

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Astrocytes

Front 16

Circulates cerebrospinal fluid

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Ependymal cells

Front 17

Protects CNS from the infection

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Microglia

Front 18

Cell processes form myelin sheaths around axons in the CNS

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Oligodendrocytes

Front 19

Forms myelin sheaths in the PNS

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Schwann cells

Front 20

Uneven distribution of charge means the cell membrane is

Back 20

Polarized

Front 21

Channel that is always open

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Leak channel

Front 22

The outside of the cell membrane is positively charged compared to the inside.

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Resting membrane potential

Front 23

The inward movement of Na makes the inside of the membrane positive.

Back 23

Depolarization

Front 24

Required to maintain the greater concentration of Na outside the cell membrane and K inside.

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Sodium potassiun pump

Front 25

Causes the inside of the cell membrane to become positive

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Depolarization

Front 26

Is a junction where the axon of one neuron interacts with another neuron or with cells of an effector organ.

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Synapse

Front 27

The end of an axons forms

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Presynaptic synapse

Front 28

The space separating the presynaptic and post synaptic membranes is

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Synaptic cleft

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Ca

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Voltage gated

Front 30

Norepinephrine

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Excitatory

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Serotin

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Inhibition

Front 32

Dopamine

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Excite or inhibit

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Glycine

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Inhibitory

Front 34

Endorphins

Back 34

Inhibitory

Front 35

Gammaamino butyric acid

Back 35

Inhibitory