Nervous Quiz

Question 1

• or “action potential “ or
“electrical signal“
• the means of communication
of the nervous system

Answer 1

NERVE IMPULSE

Question 2

specific areas in
the brain &
spinal cord w/c
process particular
inputs

Answer 2

Control centers

Question 3

• spider-like cells
• phagocytes of CNS
• smallest & least abundant
neuroglia of the CNS

functions:
✓ protect against
microorganisms
✓ clear away debris of dead
cells

Answer 3

Microglia

Question 4

ability to respond to a stimulus
& convert it into a nerve impulse

Answer 4

Irritability or excitability

Question 5

• clusters of cell bodies of
neurons within the CNS
• called a “center” if with the
same function

Answer 5

NUCLEI

Question 6

✓ Na+ gates close & K+ gates open
✓ K+ ions diffuse out of the cell &
resting membrane potential is
restored
✓ membrane patch is impermeable to
Na+ ions and thus, could not
generate another action potential
at this time – a brief period called
“refractory period” before the
membrane becomes excitable
again

Answer 6

Repolarization

Question 7

may be inhibitory - help in
the regulation of skeletal
muscle tone and movement

• may be excitatory - active
during emotional responses,
addictive behaviors, &
pleasurable experiences

Answer 7

Dopamine

Question 8

• generally inhibitory –
involved in control of mood
& onset of sleep

Answer 8

Serotonin

Question 9

Ependymal cells produce __________&
assist in its circulation

Answer 9

cerebrospinal fluid (CSF)

Question 10

https://quizlet.com/Gelli_SN/folders/anatomy-and-physiology?x=1xqU&i=49y9mv

Answer 10

https://quizlet.com/Gelli_SN/folders/anatomy-and-physiology?x=1xqU&i=49y9mv