Term
| TWO COMMUNICATION SYSTEMS |
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Definition
1. Nervous System- transmits messages by nerve impulses, which travel very fast.
2. Endocrine System-Transmits messages by chemicals. |
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Term
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Definition
1.Brain
2.Spinal Cord
3. Nerves throughout body
4.Specialized sense organs
5.Tiny sense organs in skin |
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Term
| TWO PRINCIPAL DIVISIONS OF NERVOUS SYSTEM |
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Definition
1.Central Nervous System- Consist of brain and spinal cord
2.Peripheral Nervous System |
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Term
| TWO TYPES OF CYCLES FOUND IN NERVOUS SYSTEM |
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Definition
1.Neurons- Consists of three parts; Cell body, Axon, Dendrites.
2.Neuroglia- Connective tissue cells |
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Term
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Definition
1.Sensory
2.Motor
3.Interneurons |
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Term
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Definition
1.Astrocytes
2.Microglia
3.Oligodendrocytes or oligodendroglia |
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Term
| THREE MAIN COMPONENTS OF SYNAPSE |
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Definition
1.Synaptic bulb-bulge on end of presynaptic
2.Synaptic Cleft-space between 2 neurons
3.Plasma Membrane-protein receptors neurotransmitters bind to impulse intiation |
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Term
| FOUR MAJOR DIVISIONS OF BRAIN |
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Definition
1. Brain Stem
2. Diencephalon
3. Cerebellum
4. Cerebrum |
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Definition
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Term
| FUNCTIONS OF NERVOUS SYSTEM |
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Definition
1. Receiving sensory input
2. integrating information
3. Controlling muscles and glands
4. Maintaining homeostasis
5. Serving as the center of mental activity |
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Term
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Definition
| Peripheral Nervous System |
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Term
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Definition
| Receive stimuli and conduct action potentials |
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Term
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Definition
| Support cells of the nervous system |
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Term
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Definition
| Forms the cortex and nuclei in the brain and ganglia in the PNS |
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Term
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Definition
| Forms nerve tracts in the CNS and nerves in the PNS |
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Term
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Definition
| Is a point of contact between two neuron or between a neuron and another cell |
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Term
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Definition
| Communicate between the spinal cord and the body |
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Term
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Term
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Definition
| control emotions; fears, anxiety |
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Term
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Definition
| somatic nervous system is voluntary and under conscious control |
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Term
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Definition
| autonomic nerves system is involuntary |
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Term
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Definition
1. cell body- main part of cell
2. axon- transmit impulses away from cell
3. dandrite- transmit impulse to cell |
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Term
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Definition
1.Smooth-nonstraited or involuntary
2.Cardiac-composed of heart
3.Skeletal-voluntary or straited |
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Term
| PRIMARY FUNCTIONS OF MUSCULAR SYSTEMS |
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Definition
1.Movement
2.Posture
3.Heat Production |
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Term
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Definition
| when muscles are not used they shrink in size and become less useful |
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