Functions
Cells that make myelin for axons outside of the CNS
What are Schwann Cells
Cells that act as microbe-eating scavengers in the CNS
What is microglia
Part of the brainstem that contains cardiac, respiratory and vasomotor centers
What is the medulla oblongata
What is the name of the nervous system diviSimon that includes the nerves that extend to the outlying parts of the body
What is the peripheral nervous system
The exterior of a resting neuron has a slight________ charge, whereas the interior has a slight __________ charge.
What is positive and negative
Glia cells that help for the blood-brain barrier
What are astrocytes
A highly branched part of the neuron that carries impulses toward the cell body
What is dendrite
Sensory perception, willed movements, consciousness and memory are mediated here
What is cerebrum
What is the name of the nervous system division that includes the brain and spinal cord
What is the central nervous system
During a nerve impulse, _______ is the ion that rushes into a neuron
A single projection that carries nerve impulses away from the cell body
What are axons
Part of the brainstem that is conduction pathway between areas of the brain and body; influences respiration
What are pons
Regulates muscle coordination, maintenance of equilibrium and posture
What is cerebellum
A group of peripheral axons bundled together in an epineurium
What is a nerve
The _________ is the place where impulses are passed from one neuron to another
What is synape
Cells that make myelin for axons inside of the CNS
What is obligodendrocyte
Sensory relay station from various body areas to cerebral cortex, also involved with emotions and alerting and arousal mechanisms
What is the thalamus
Part of the brain stem that contains relays for visual and auditory impulses
What is midbrain
The knee jerk is a type of neural pathway
What is a reflex arc
There are ______ pairs f cranial nerves and _______ pairs of nerves that come from the spinal cord
What are 12 and 31
A white fatty substance that surrounds and insulates the axon
What is myelin
Carries messages to and from the brain to the rest of the body; also mediates reflexes
What is the spinal cord
Regulates body temperature, water balance, sleep-wake cycles, appetite and sexual arousal
What is hypothalamus
What is a self-prorating wave of electrical disturbance that travels along the surface of a neurons’ plasma membrane
What is a nerve impulse
What are skin surfaces areas supplied by a single spinal nerve
What are dermatomes