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Biology - Semester 2 - Nervous System
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13
Biology
10th Grade
05/23/2010

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Term
Meninges
Definition
Three membrane covers that protect the central nervous system.
Term
Cerebrospinal Fluid
Definition
Acts as a shock absorber to protect the Central Nervous System.
Term
Hypothalamus
Definition
Controls the pituitary gland, regulates heartbeat and body temperature, and controls appetite, thirst, sleep, rage & anger.
Term
Cerebrum
Definition
The largest part of the brain, divided into two hemispheres, stores memory, and interprets senses.
Term
Cerebellum
Definition
Helps with balance and coordination, and maintains muscle tone.
Term
Reflex
Definition
An automatic reaction to a stimulus .
Term
Neuron
Definition
A basic nerve cell, there are three types:
1. Sensory Neuron
2. Interneuron
3. Motorneuron
Term
Axon
Definition
Carries the impulse AWAY from the cell body.
Term
Dendrite
Definition
Carries the impulse TO the cell body.
Term
Synapse
Definition
A gap between neurons.
Term
Neurotransmitter
Definition
Chemicals used to cross the Synapse.
Term
Autonomic
Definition
Not under conscious control and has two divisions:
1. Sympathetic: Prep for stress.
2. Parasympathetic: Opposite of sympathetic.
Term
Stomatic
Definition
It is under conscious control.
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