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29 Cards in this Set
- Front
- Back
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Neurons |
- Specialized cells, transmitting nerve impulses. - Carries info between the brain and other part of the body. - Basic unit of life. |
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Electrolytes |
- Gel like liquid - contains ions - can be decomposed by electrolysis |
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Sympathetic nervous system |
- fight / flight respone . - responds to sudden stress. - harm/ danger to the body |
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Receptors |
- senses organs - grouped of specialized cells - can detect changea in the. environment - skin, π , π , π
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Axons |
Long fibers which is protected by fatty sheath |
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Cytoplasm |
- Gel like area - has nutrients for optimum chemical reaction |
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Effectors |
- organ or cell - response to stimulus |
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Motor neuron |
- nerve cell - forming path way - signals passes from brain or spinal cord to muscles or gland |
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Sensory neurons |
- nerves that transmitt- pass on sensory info: - e.g. sight, sound, feeling. |
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Sensory organ |
- group of receptors - respond to specific stimulus |
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Synapas |
- junction between 2 nerve cells - minute gap - signals pass through by diffusion of a neurotransmitter. |
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Parasympathetic nervous system |
-Control and balance body system. - calming down body - controls digested food - excrete waste - fight off bacteria |
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Autonomic nervoua system |
- part of NS that regulates involuntary process. - with out thinking |
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Spinal cord |
- cylindrincal - many nerve fibers - |
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Axon terminal |
At the end teledendrites |
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Efferent |
Carrying away, outward |
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White matter |
- whitish nerve tissues of cns - mylinated nerve fibres ( axon) |
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Gray matter |
- Grayish nerve tissues - composed of cell bodies and dendrites |
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Shwann cells |
- made from a material called myelin - produced by special cell known as shwann cells. - |
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Medulla oblongata |
- continuation of the spinal cord - forming lower part of brainstern - does a few involuntary jobs: 1. Controls digestion 2. Heart beat 3. Breathing 4. Thalaums: carries info from sensory organ. E.g π , π, skin |
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Cerebellum |
- little brain - coordination - learning new things |
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Cerebrum |
- largest part - senses - imagination - thought |
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Nervous System |
- controls all of our actions |
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Cererberumspinal fluid |
- clear watery fluid - fills space between the archoid memberane and the pia meter. - protects brain - cushion for trama to head - pillow |
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Hypothalamus |
- forebrain below thalamus - coordinated autonomic NS and the activity of the piturtary. - controlling body temp - thirst, hunger, homeostatic systems |
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Thalamus |
- middle brain - between cere ral cortex & mid brain - correlate consciousness, sleep, interpretation. |
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Afferent neurons |
- senses stimuli & sends info to brain - sock smells |
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Reflec arc |
- Hot pot - π movies away quickly |
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Ganglia |
- massive nerve tissue - containing nerve cells outside to the brain or sp |
