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ANS

SNS PSNS

Supplying Trunk Thoracolumbar (T1-L3) Craniosacral (1973, S2-4)

Type of Response diffuse Localized

Length of Preganglion short Long

General Function Fight/ flight Rest & repose

Length of Postganglion long Short

Pre: Post 1:10 1:3

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Nuclei & receptors refer to your NPTE

notes

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SNS

Dilates pupil

Inhibits saliva

Accelerates heartbeat

Dilates bronchi

Inhibits peristalsis & secretion

Conversion of glycogen -> glucose

Secretion of adrenaline & noradre

Inhibits bladder contraction

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SNS not so important

Relax sphincters

Increase blood supply : mm

Skin arterioles constrict Stomach decreased BS

Shoot

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(-) ANS/ PSNS

Sweat glands

Erector pili

Adrenal medulla Smooth muscle lining of vessels

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ANS: RELATED REFLEXES

1. VISUAL: CN 2& 3 ( affector: 2)

Direct

ConsensualAccommodation: lalayolalaki ( medial rectus &

ciliary muscle)

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2. Cardiovascular Reflex

a. Carotid sinus (CN 9) (stimuli: inc BP ,

response dec)

b. Aortic Arch (CN 10)

c. Bainbridge atrial reflex: any distention or

increase Pressure in (R0 atrium= SNS: Incpumping

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CRANIAL NERVES: SENSORY

OLFACTORY (1)

Most commonly contused CN

Conditions: U/L-damage to olfactory nerve d/ttumor; B/L : colds

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OPTIC (2)

testing: visual acuity, visual field

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VESTIBULOCOCHLEAR (8)

Vestibular: HUVS, COWS

Cochlear: Watch ticking test, whisper test,tuning fork test

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CRANIAL NERVES: MOTOR

OCULOMOTOR (3)

EOM& LPS

Tests: eye tracking, direct light, consensual,accommodation, corneal/ blink, visual body

reflex, pupillary skin reflex

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TROCHLEAR( 4)

Longest & most slender intracranial nerve

Superior oblique

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ABDUCENS (6)

Short

Lateral rectus

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ACCESSORY (IX)

Formed by the union of cranial & spinal C2-4

nn root

SCM & upper Trapz

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HYPOGLOSSAL (XII)

All intinsic tongue muscles

Palato( elevates); hyo (depress); genio(forward); stylo ( shape)

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CRANIAL NERVES : MIXED

TRIGEMINAL (V)

M

OM

All has sensory but only MANDI have MOTOR

function

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FACIAL (VII)

T

ZB ( upper & lower)

M (marginal)

C

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V vs VII

TRIGEMINAL FACIAL

MOTOR

SENSORY

AUTONOMIC

OSSICULAR

REFLEXES

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GLOSSOPHARYNGEAL (IX)

sensory: posterior 1/3 of tongue

Stylopharyngeus & sends secremotor controlto parotid gland

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VAGUS (X)

Largest extracranial nerve

Goes to abdomen to promotePNS

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IX vs X

GLOSSOPHARYNGEAL VAGUS

MOTOR

SENSORY

AUTONOMIC

GAG REFLEX