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SSCT Intro to A&P C8
SSCT Chapter Anatomy & Physiology Chapter 8 Nervous System
Question | Answer |
---|---|
CNS | Central Nervous System |
Central Nervous System | brain & spinal cord |
PNS | Peripheral Nervous System |
Peripheral Nervous System | all nerves |
ANS | Autonomic Nervous System |
Dendrites | conduct impulses to cell body of neuron |
Axon | conducts impulses away from cell body of neuron |
Sensory Neurons | conduct impulses to the spinal cord and brain |
Motor Neurons | conduct impulses away from brin and spinal cord to muscles and glands |
interneurons | conduct impulses from sensory neurons to motor neurons |
Astocytes | star-shaped cells that anchor small blood vessels to neurons - blood-brain-barrier (BBB) associated with certain neurotransmitters |
Microglia | small cells that move in inflamed brain tissue carrying on phagocytes - repair damage |
oligodendrocytes | form myelin sheaths on axons in the CNS |
Schwann cells | form myelin sheaths of axons in the PNS |
White matter | tissue composed primarily of myelinated axons (nerves or tracts) |
Gray Matter | tissue composed primarily of cell bodies and unmyelinated fibers |
Endoneurium | surrounds individual fibers within a nerve |
Perineurium | surrounds a group (fascicle) of nerve fibers |
Epineurium | surrounds the entire nerve |