Reflex vs. Parallel processing in the nervous system

olfactory (1)

amell

optic (2)

vision

oculomotor (3)

eyeball & upper eyelid movement

trochlear (4)

eyeball movement

trigeminal (5)

sensory- impulses of touch, temp, & pain

motor- chewing 

abducens (6)

movement of eyeball

facial (7)

sensory- proprioception & taste

motor- facial expression

vestibulocochlear (8)

impulses of hearing, balance, & equilibrium

glossopharyngeal (9)

sensory- taste & posterior of tongue, monitoring BP & blood gases

motor- elevates pharynx during swallowing

vagus (10)

sensory- pharynx, BP & blood gas monitoring

motor- smooth muscle contraction/ relaxation in GI tract, decrease HR, stimulation of digestive secretions

accessory (11)

swallowing, head & soulder movements

hypoglossal (12)

tongue movement (speech & swallowing)

conus medullaris

tapered lower end of spinal cord

forms the cauda equina 

cause equina 

spinal cord ends around L3

bundle of spinal nerves and spinal nerves and spinal nerve rootlets 

monosynaptic

1 synapse, no interneuron

polysynaptic

more than one synapse with interneurons

c4 injury

tetraplegia

c6 injury

mid shoulder down tetraplegia 

T6 injury

paraplegia

bust and down

l1 injury

paraplegia

hips and down