Ch 45 (test 1) Flashcards

1
Q

two types of PNS systems

A

sensory

motor

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2
Q

match:

Sensory/Motor
Efferent/Afferent

A
Sensory = Efferent
Motor = Afferent
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3
Q

Two types of motor systems

A

Autonomic

Somatic

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4
Q

two types of the ANS

A

Sympathetic

Parasympathetic

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5
Q

Match:

Sympathetic/Para
Fight and flight/rest and digest

A
Sympathetic = Fight/Flight
Parasympathetic = Rest/Digest
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6
Q

which part of the brain does the sensory nervous system synapse with

A

somatosensory

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7
Q

what is the soma, perikaryon, karyon

A

cell body

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8
Q

what is the lower brain (subcortical) consist of

A
  • brainstem (medulla, pons, mesncephalon)
  • cerebellum
  • thalamus
  • hypothalamus
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9
Q

what part of the brain controls our subconscious activities

A

lower brain (subcortical)

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10
Q

what is the corticol (higher brain) level of the brain control

A
  • somatosensory
  • suditory/visual
  • motor
  • memory storage
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11
Q

what are the 2 types of synapses

A

chemical

electrical

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12
Q

define chemical synapse

A
  • use of neurotransmitters

- pre/post synaptic neuron communicate via neurotransmitters

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13
Q

define electrical synapse

A

-gap jxn (tubular protein) between 2 cells

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14
Q

what are the 3 types of chemical synapses

A
  • axoaxonic
  • axodendritic
  • axosomatic
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15
Q

what is the most common type of chemical synapse

A

axodendritic

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16
Q

what is the most influential type of chemical synapse

A

axosomatic

axoaxonic

17
Q

explain out a chemical synapse works

A

1) AP moves down presynaptic term
2) Voltage gated Ca channels open
3) Ca enters
4) Ca increases inside cell
5) Vesicles move towards synaptic cleft
6) Vesicles release NT into synaptic cleft via exocytosis
7) NT binds to receptor protein on dendrite

18
Q

2 types of receptor proteins

A

binding (outside of cell)

ionophore (transmembrane protein)

19
Q

2 types of ionophores

A

ion channel

second messenger activator

20
Q

What ions are associated with cation channels and which way do they move in/out of cell

A

Na–in
Ca–in
K–out

21
Q

what ions are associated with anion channels

22
Q

which channels are open/closed during excitation

A

Na open

Cl and K closed

23
Q

what channels are open/closed during inhibition

A

Na closed

Cl and K open

24
Q

what NT are in which classes for small, rapidly acting NT

A

Class 1–Ach
Class 2–Hist, Epi, Norepi, Dopa, Serotonin
Class 3–GABA, Gly, Glut, Asp
Class 4–NO

25
where are the NT synthesized
in cytosal of cell
26
which NT are excitatory and where are they found
Norepi--Brainstem, hypo Glu--cerebral cortex NO--brain Ach--ANS, motor end plate
27
which NT are inhibitory and where are they found
``` Ach--Motor cortex Dopa--substangia nigra Gly--Spinal cord GABA--cord, cerebellum, basal ganglia Serotonin--brainstem ```
28
many presynaptic neurons stimulating a postsynaptic neuron
spatial summation
29
successive discharges from a single presynaptic neurons
temporal summation
30
how long do postsynaptic potentials last
15 ms
31
change in membrane potential conduction lost as it moves down the membrane
decremental conduction