nervous system Flashcards

1
Q

CNS

A

brain

spinal cord

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2
Q

PNS

A

sensory ganglia (cranial & spinal) - S
sympathetic ganglia - M
parasymphathetic ganglia - M
enteric ganglia - M
all nerves & plexi (cranial & spinal)

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3
Q

symp & PS innervate what muscles

A

smooth muscle

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4
Q

cluster of neuronal cell bodies in PNS are located…

A

ganglion

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5
Q

cluster of neuronal cell bodies in CNS are located…

A

nucleus, lamina, cortex (gray matter)

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6
Q

neuronal processes/axons in PNS are located…

A

nerve/plexus

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7
Q

neuronal processes/axons in CNS are located…

A

tract, fasciculus, lemniscus (white matter)

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8
Q

term for fasciculus

A

cord

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9
Q

term for lemniscus

A

ribbon

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10
Q

afferent

A

SENSORY
ascending pathway
PNS –> CNS
midbrain –> forebrain

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11
Q

efferent

A

MOTOR, SYMP, PS
descending pathway
away from CNS
forebrain –> midbrain

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12
Q

ipsilateral

A

same side of body

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13
Q

contralateral

A

opposite sides of body

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14
Q

Abeta

A

SENSORY

mechanoreceptors: touch, pressure, vibration

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15
Q

Adelta

A

SENSORY

nociceptors & temp

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16
Q

C

A

SENSORY & MOTOR

dull pain

17
Q

What nerve fibers are affected by anesthesia?

A

Agamma & C

18
Q

forebrain

A
cerebral hemisphere (cerebrum)
diencephalon
19
Q

diencephalon

A

thalamus
hypothalamus
etc.

20
Q

hindbrain

A

pons, medulla, cerebellum

21
Q

brainstem

A

midbrain, pons, medulla

22
Q

important muscle of mastication neurons are located…

A

midbrain

mesencephalic nucleus

23
Q

precentral gyrus sensory or motor?

A

motor

24
Q

postcentral gyrus sensory or motor?

A

sensory

25
Q

what separates the cerebral hemispheres

A

longitudinal fissure

26
Q

components of brainstem anatomy

A

1) somatic sensory & motor tracts pass thru - bw spinal cord & forebrain
2) cranial nerve nuclei - in longitudinal columns
3) reticular formation - network of nuclei

27
Q

where does the spinal cord terminate?

A

conus medillaris

28
Q

where are lumbar & sacral nerves located?

A

cauda equina

29
Q

how many nerves in spinal cord?

A

31

30
Q

how many bones in spinal cord?

A

33

31
Q

where is grey matter located in SC?

A

fasciculi proprii

32
Q

where is white matter located in SC?

A

everywhere but the fasciculi proprii lol idk

33
Q

what is in the dorsal horn of SC?

A

substantia gelatinosa
nucleus proprius
dorsal nucleus

34
Q

what is in the ventral horn of SC?

A

motor neurons

35
Q

what’s the significance of the cauda equina?

A

spinal cord ends just above it