Peripheral Nervous System Flashcards
CN for sense of smell
CN I: Olfactory
CN for visual acuity and visual fields
CN II: Optic
CN for muscles that move the eye and lid, pupillary constriction, lens accommodation
CN III: Oculomotor
CN for muscles that move the eye downward and toward the nose
CN IV: Trochlear
CN for facial sensation, corneal reflex, mastication
CN V: Trigeminal
CN for muscles that move the eye horizontally
CN VI: Abducens
CN for facial expression and muscle movement, salivation and tearing, taste, sensation in the ear
CN VII: Facial
CN for hearing and equilibrium
CN VIII: Vestibulocochlear
CN for taste, sensation in pharynx and tongue, pharyngeal muscles, swallowing
CN IX: Glossopharyngeal
CN for muscles of pharynx, larynx, and soft palate; sensation in external ear, pharynx, larynx, thoracic and abdominal viscera; parasympathetic innervation of thoracic and abdominal organs
CN X: Vagus
CN for sternocleidomastoid and trapezius muscles
CN XI: Accessory
CN for movement of the tongue
CN XII: Hypoglossal
Cranial nerves shortcut
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Cranial nerves for sensory
I, II, VIII
Cranial nerves for motor
III, IV, VI, XI, XII
Cranial nerves for both sensory and motor
V, VII, IX, X
Number of cervical nerves
8
Number of thoracic nerves
12
Neurotransmitter for SNS
Norepinephrine
Neurotransmitter for PNS
Acetylcholine
Neurotransmitter (SNS) that is excitatory; attention, alertness, focus
Norepinephrine
Neurotransmitter (PNS) that is excitatory; muscle contraction
Acetylcholine
Neurotransmitter that is inhibitory; control mood and sleep, anxiety, inhibits pain pathways
Serotonin
Neurotransmitter that is inhibitory; behavior (attention and emotions) and fine movements
Dopamine
Neurotransmitter that is excitatory; pleasurable sensation, inhibits pain
Endorphins
Increased ICP compresses CN ____, leading to unequal pupils or ___________
CN III, Anisucuria
The longest CN is ____, increased ICP leads to dilated pupils
CN VI
This CN ____ is affected by streptomycin leading to ringing of the ears or _________
CN VIII, tinnitus
Cranial nerve that innervates GI tract
CN X: Vagus
Increased norepinephrine leads to
manic, high anxiety
Decreased norepinephrine leads to
Depression
Increased acetylcholine leads to
Increased lacrimation, increased salivation
Decreased acetylcholine leads to
Alzheimer’s disease, multiple sclerosis
Increased serotonin leads to
Manic
Decreased serotonin leads to
Depression
Increased dopamine leads to
Manic
Decreased dopamine leads to
Parkinson’s disease, depression
Increased endorphins leads to
Increased pleasure, reduced anxiety
Decreased endorphins leads to
Depression
The sympathetic nervous system causes pupils to
dilate
The parasympathetic nervous system causes pupils to
constrict
The sympathetic nervous system causes rate and force of heart beat to
increase
The parasympathetic nervous system causes rate and force of heart beat to
decrease
The sympathetic nervous system causes blood vessels in skeletal muscles to
dilate
The parasympathetic nervous system causes blood vessels in skeletal muscles to
constrict
The parasympathetic nervous system causes blood vessels in heart muscles to
constrict
The sympathetic nervous system causes blood vessels in heart muscles to
dilate
The sympathetic nervous system causes blood vessels in abdominal viscera and skin to
constrict
The parasympathetic nervous system causes blood vessels in abdominal viscera and skin to
dilate
The sympathetic nervous system causes blood pressure to
increase
The parasympathetic nervous system causes blood pressure to
decrease
The sympathetic nervous system causes bronchioles to
dilate
The parasympathetic nervous system causes bronchioles to
constrict
The sympathetic nervous system causes rate of breathing to
increase
The parasympathetic nervous system causes rate of breathing to
decrease
The sympathetic nervous system causes peristaltic movement of digestive tubes to
decrease
resulting to constipation
The parasympathetic nervous system causes peristaltic movement of digestive tubes to
increase
resulting in diarrhea
The sympathetic nervous system causes secretion of salivary glands to
be thick and viscid
The parasympathetic nervous system causes secretion of salivary glands to
be watery and thin
The sympathetic nervous system causes secretions of stomach, intestines, and pancreas to
decrease
thereby decreasing HCl production
The parasympathetic nervous system causes secretions of stomach, intestines, and pancreas to
increase
thereby increasing HCl production
The sympathetic nervous system causes the urinary bladder to
relax
resulting to low urine output
The parasympathetic nervous system causes the urinary bladder to
contract
The sympathetic nervous system causes the secretion of sweat to
start/increase
