問題一覧
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COORDINATES AND CONTROLS the workings of the components of the body
Nervous System
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(Control center for all body activities)
Nervous system
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2. Like a — that transmits information by electrical signals called —
communication network neurons or nerve cells
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3. — to changes that occur both inside and outside the body Ex. —3
Responds and adapts (Ex: pain, temperature, pregnancy)
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- basic cell of the NS that carries impulses or action potential from ONE PART TO ANOTHER
Neurons
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3 parts of neurons
Cell Body Dendrites Axon
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– controls the GROWTH of the NERVE cell
1. Cell Body (Soma)
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- SHORT-branched fibers that CARRY IMPULSES TOWARDS the cell body
2. Dendrites
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- long, thin fibers that CARRY MESSAGES AWAY from the cell body
3. Axon
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1 2 3 4
1 Dendrites 2 Cell Body 3 Neurological Cells 4 Axon
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Consists of the brain and spinal cord
Central Nervous System
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Where interneurons RECEIVE AND PASS on messages
Central Nervous System
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– control center
brain
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– relays SENSORY AND MOTOR INFORMATION to and from the brain to other parts of the body
spinal cord
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The central nervous system (CNS) is composed of the —2 These neurons cannot — if damaged.
brain and spinal cord. regenerate
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Brain – consists of — neurons —2 — everything a person does produces wave of — that differ in length and frequency
10 billion moist and spongy controls electrical impulses
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Brain Protection
SMC 1. skull 2. meninges 3. cerebrospinal fluid
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Parts of the Brain
Cerebrum Cerebellum Brain stem
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- large upper region controls ACTIVITY AND THOUGHT
1. Cerebrum
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has 2 sides of cerebrum:
left and right hemispheres
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beneath the back of the cerebrum
2. Cerebellum-
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coordinates MUSCLE movement
cerebellum
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-below the cerebellum at the BASE OF THE SKULL
3.Brain stem
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controls heart beat, breathing and blood pressure
brain stem
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-controls breathing , heart beat and SWALLOWING
Medulla
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-regulates breathing and controls EYE movement
Pons
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-eye movement
Midbrain
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-smaller part of the brain that process info FROM SENSE ORGANS
Thalamus
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the RELAY STATION of senses
thalamus
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-regulates body temperature, use of water, blood pressure and release of chemicals
Hypothalamus
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are NERVE CELLS that SEND MESSAGES all over your body to allow you to do everything from breathing to talking, eating, walking, and thinking
Neurons
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are branched cell components that RECEIVES STIMULUS from the other neurons or sensory receptors.
Dendrites
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CELL BODY contains a — which will process the stimulus.
nucleus
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will TRANSMIT THE STIMULUS to a gland, muscle, organ or other neuron
Axon
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BRAIN PROTECTION
skull meninges cerebrospinal fluid