Nervous System Anatomy
What is the CNS?
Brain and spinal cord
What are the three types of neurons?
Sensory, motor, and interneurons.
What is the name of the thing that neurons use to communicate?
action potential
What direction are afferent neurons travelling?
Dendrites, cell body, and axons.
Which two ions are most important for an action potential to be completed?
sodium and potassium
What is that thing that hangs off the spinal cord?
cauda equina
What direction are efferent neurons travelling?
Away from the brain/to an effector muscle.
What to oligodendrocytes and Schwann cells do? What is different about them?
What is it called when sodium rushes into the cell?
Depolarization
If a nerve comes off of the spinal cord, what is it called?
a spinal nerve
What is the difference between visceral and somatic motor?
visceral = involuntary, internal organs
somatic = voluntary, skeletal muscle
What do ependymal cells do?
Make CSF
What is it called when potassium rushes out of the cell?
Repolarization
What is your favorite color?
:) right answer is blue