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Bio- Nervous System

Photoreceptors Light
Thermoreceptors Heat
Mechanoreceptors Movement
Chemoreceptors Taste/smell
Nocireceptors Pain
Sensory neuron Senses conditions in and out of body, gives info to central system
Interneurons Interconnect other neurons (in central system)
Motor neuron Sends instructions from central system to body; squeezes either a muscle or a gland
Axon long part of neuron
Cell body Large part of neuron
Dendrite structures connected to cell body of a neuron; receives neurotransmitters through exocytosis by the synapses of another neuron
Myelin sheath protects axon
Terminals structures at the end of a neuron opposite of the cell body
Synapse Structure at the end of terminals; uses exocytosis to help the neurotransmitters leave one neuron and activate receptors on the dendrites of the next neuron
Rods in retina Detect light and dark
Cones in retina Detect color
Retina In the back of eye; contains rods and cones
Optic nerve Attached to back of eye; source of blind spot because there are no rods or cones in this area
Cerebrum main part of brain
Cerebellum structure in back of brain; responsible for coordination
Brainstem structure in middle of brain
ALS amyotrophic lateral sclerosis; kills motor neurons and causes muscles to weaken. Causes no mental problems
Parkinsons resting tremor, shuffling gait (shortage of dopamine)
Multiple sclerosis T-Cells identify myelin as an antigen and attack it; causes neurological disorders
Cochlea Structure in ear; contains fluid and cilia; responsible for balance because it detects up and down
Created by: hannfrin
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