Neuro quiz 1 Flashcards
Cranial nerves
1 olfactory
2 optic
3 oculomotor
4 trochlear
5 trigeminal
6 abducens
7 facial
8 vestibulocochlear
9 glossopharyngeal
10 vagus
11 accessory
12 hypoglossal
The facial nerve innervates the muscles of
Facial expression (motor)
Innervates the orbicularis oculi
Cranial nerve 9
Gag reflex- sensory
Swallow- motor
The SLN and RLN branch off of the __ nerve
CN X
The SLN contains which branches?
Internal branch- sensory
External branch- motor (cricothyroid)
Injury to the ___ nerve is more dangeorus, as it innervates of of the intrinsic muscles of the larync except for the cricothyroid
RLN
CN X and how it affects the hear, lungs, GI system
Heart- PNS innervation to the SA and AV node
Lungs- PNS causes vasodilation and bronchoconstriction
GI- PNS stimulates smooth muscle contraction and glandular secretions
Components inside the cranium
Brain- 80%
Blood- 10%
CSF- 10%
Branches off the aorta
Innominate- turns into the R subclavian and the R carotid
Left carotid
L subclavian
Circle of willis
The vertebral arteries arise from the ___
Subclavian arteries
Arterial supply to the circle of willis
Internal carotids
Vertebral arteries
The meninges consist of
(Covers the brain and spinal cord)
Dura mater- drains CSF
Arachnoid mater- contains blood supply to brain
Pia mater- anchored by astrocytes which form the BBB
Astrocytes
Form BBB
Lobes of the brain
Frontal motor
Occipital sight
Parietal sensory
Temporal speech / auditory
