Module 4 - brain Flashcards
1
Q
neurons
A
element components of the nervous system
2
Q
glial cells
A
provide myelin, support, nourish, and protect neurons
3
Q
axons
A
carry impulses away from the cell body
4
Q
dendrites
A
branchlike parts of the neuron that receive information
5
Q
myelin sheath
A
fatty tissue that encases the fibers of neurons.
enables faster transmission speed of neural impulses
6
Q
all-or-none
A
neurons reaction of either firing or not firing
7
Q
agonist
A
a molecule that increases a neurotransmitter’s action
8
Q
antagonist
A
molecule that inhibits or blocks a neurotransmitter’s action
9
Q
sympathetic subdivision
A
arouses and expands energy
10
Q
parasympathetic subdivision
A
calms and conserves energy
11
Q
cerebellum
A
balance and coordination
12
Q
cerebral cortex
A
outer region of the cerebrum
