wk 4 (L2 Innervation of orbit + contents)

what’s the two subcategories in the nervous system

PNS = spinal + cranial nerves

CNS = brain + spinal cord

2 major divisions of PNS

autonomic = involuntary

somatic = voluntary

3 major subdivisions of autonomic NS

1. sympathetic

2. parasympathetic

3. enteric

what are the 12 cranial nerves

sensory

• olfactory

• optic

• Vestibulocochlear

motor

• oculomotor

• trochlear

• abducent

• accessory

• hypoglossal

both

• trigeminal

• facial

• glossopharyngeal

• vagus

oculocardiac reflex

• The eye and heart are connected via nerves.

• When you press on the eyeball or pull on the eye muscles, it can slow down the heart rate (bradycardia).