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Flashcards in ANS Deck (52):
1

CNS consists of

brain and spinal cord

2

Integration and command center
of the body

brain and spinal cord

3

PNS consists of

peripheral nerves branching out from CNS

4

connects CNS to all other locations in the body

peripheral nerves

5

sensory information travels in -- division of PNS

afferent

6

motor info travels in -- division of PNS

efferent

7

info processing

CNS

8

Efferent division includes --

somatic nervous system and autonomic nervous system

9

two types of nerves that form PNS

12 pairs of cranial
31 pairs of spinal

10

neuron aka

neuron cell, nerve fiber

11

core component of CNS and PNS

neuron

12

In CNS, neurons connect to each other to form
--

neural networks.

13

In PNS, neurons connect to --

muscle or organs.

14

function of dendrites

receive info/respond to stimuli

15

cell body aka

soma

16

cell body contains--

nucleus, cytoplasm,
organelles

17

function of axon

carries electrical signal
(action potential) away from cell
body

18

function of cell body

integrates incoming signal and generates outgoing signal to axon

19

AP carried in --

one way only

20

The difference in electric
potential between the interior
and the exterior of a cell

membrane potential

21

membrane potential: outside is --

positive

22

membrane potential: inside is --

negative

23

resting potential

-70 mV

24

Neurotransmitters are --
released from neurons to communicate with
muscle, organs, or other neurons by binding to
specific receptors in the membrane on the
postsynaptic side of the synapse or effect organ.

endogenous chemicals

25

types of NT

amino acids, peptides, monoamines, others (ACh, NO)

26

GABA, glutamate, glycine

amino acids NT

27

endogenous opioids, endorphins

peptide NT

28

catecholamines

monoamine NT

29

excitatory NT effect on PNS

neuron - AP
muscle - contraction
gland - secretoin

30

excitatory NT effect on CNS

depolarize post-synaptic membrane

31

inhibitory NT on PNS

reduce or bloc activity of post-synaptic cell

32

inhibitory NT on CNS

hyper polarize post-synaptic membrane

33

sympathetic heart rate

increase

34

sympathetic bp

increase

35

sympathetic digestion

decrease

36

sympathetic lung airways

wide open

37

sympathetic pupils

dilate (mydriasis) = radial muscles contract

38

sympathetic mouth

dry

39

sympathetic palms

sweaty

40

parasympathetic heart rate

decrease

41

parasympathetic digestion

increase

42

parasympathetic insulin secretion

increase

43

parasympathetic salivation

increase

44

parasympathetic pupils

constrict (miosis) = circular muscles contract

45

sympathetic and parasympathetic fibers secrete --

different NTs

46

target cells respond differently even to the same NT depending on what --

receptor type

47

ACh is a -- NT

sympathetic and parasympathetic

48

ACh is synthesized by --

choline acetyltransferase

49

neurons that release ACh

cholinergic neurons

50

receptors sensitive to ACh

cholinergic receptors

51

neurons that release catecholamines

adrenergic neurons

52

receptors sensitive to catecholamines

adrenergic receptors