Flashcards in Peripheral Nervous System and the Spinal Cord Deck (133)
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1
Autonomic nervous system functions
Involuntary responses
2
Cranial nerve II
Optic. Sensory. Sight
3
How can the BBB potentially be opened or weakened?
high blood pressure, microwaves, ultrasonic waves, radiation, infection, injury (stroke, inflammation, pressure)
4
Blockage of CSF flow usually at narrow points in the passage
Hydrocephalus
5
How is blood supplied to the brain anteriorly?
Carotid arteries
6
Spinal nerve regions for sympathetic and parasympathetic
Sympathetic = thoracic/lumbar
Parasympathetic = cranial/sacral
7
Cranial nerve VIII
Vestibulocochlear/auditory. sensory. inner ear
8
Same side of the midline
ipsilateral
9
What does the blood brain barrier do?
Excludes some molecules from passing easily
10
Far from the center
Distal
11
Opposite sides of the midline
contralateral
12
CSF path of flow
Ventricles down the spinal cord and up and around the cortex
13
What molecules are allowed through the BBB via passive diffusion?
water, some gasses like O2 and CO2, and lipid soluble molecules
14
What are the cerebral ventricles filled with?
CSF
15
Why is there left arm pain during a heart attack and who does it occur in?
Its linked to a spinal nerve and is pretty much only in males
16
How much CSF is replenished and how often?
100-150 mL at a time, replenished 3x a day
17
What are the 4 cerebral ventricles?
Lateral ventricles, third ventricle and fourth ventricle
18
What molecules are allowed through the BBB via active transport (protein channel)?
glucose and amino acids
19
Cranial nerve condition causing temporary paralysis of one side of face
Bell's palsy
20
Where does CSF exit into the bloodstream?
Superior sagittal sinus
21
How is the BBB related to Alzheimer's?
Research is showing that the BBB is leaky in Alzheimer's
22
How is blood supplied to the brain posteriorly?
Vertebral arteries at base of skull
23
What do the sympathetic and parasympathetic pathways use at targets
Sympathetic uses NE and parasympathetic uses ACh
24
Functions of the somatic nervous system
Voluntary movement
25
Fight or flight response
Sympathetic division
26
What procedures are done on the meninges?
Spinal tap and epidural
27
Towards the midline
Medial
28
2nd synapse NT of sympathetic and parasympathetic
NE in sym and ACh in parasym
29
NTs of autonomic nervous system
ACh and NE
30
