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