| Term | Definition |
|
ganglion |
cluster of cell masses |
|
peripheral nerve |
long bundle of axons wrapped in connective tissue |
|
cranial nerve |
peripheral nerve that connects to the brain |
|
12 |
# of pairs of cranial nerves |
|
olfactory nerve |
the first cranial nerve |
|
olfactory nerve |
cranial nerve that deals with smell |
|
olfactory nerve |
the only cranial nerve that attaches to the cerebrum |
|
optic nerve |
cranial nerve that deals with eyesight |
|
optic chiasm |
intersection of the optic nerves |
|
oculomotor nerve |
cranial nerve that articulates eye muscles: superior, medial and inferior rectus and inferior oblique |
|
trochlear nerve |
smallest cranial nerve |
|
trochlear nerve |
cranial nerve that articulates the superior oblique muscles of the eye |
|
trochlea |
ligamentous sling for the superior oblique muscle |
|
6 |
how many muscles in an eye? |
|
trigeminal nerve |
largest cranial nerve |
|
opthalmic branch of the trigeminal nerve |
cranial nerve that provides sensory information from the eye orbit, nasal cavity and forehead skin |
|
maxillary branch of the trigeminal nerve |
cranial nerve that provides sensory information from lower eyelid to upper cheek |
|
mandibular branch of the trigeminal nerve |
cranial nerve that provides sensory information from temples, gums, teeth and front of tongue |
|
mandibular branch of the trigeminal nerve |
cranial nerve that controls chewing muscles |
|
abducens nerve |
cranial nerve that innervates the lateral rectus muscle |
|
facial nerve |
cranial nerve that controls face expressions |
|
facial nerve |
cranial nerve that provides pressure sensations from the face and taste from the back of the tongue |
|
vestibulocochlear nerve |
cranial nerve that is responsible for the ear |
|
vestibular branch of the vestibulocochlear nerve |
cranial nerve that gets the balance and motion sensations |
|
cochlear branch of the vestibulocochlear nerve |
cranial nerve that gets the hearing |
|
glossopharyngeal nerve |
cranial nerve that gets taste from the back of the tongue and controls swallowing |
|
vagus nerve |
cranial nerve that gets taste from the throat and the digestive tract |
|
accessory nerve |
cranial nerve that articulates neck and back |
|
accessory nerve |
cranial nerve that has some of its motor fibers in vertebra |
|
hypoglossal nerve |
cranial nerve that controls the voluntary actions of the tongue |
|
8 |
# of cervical nerve pairs |
|
1 |
# of coccygeal nerve pairs |
|
5 |
# of sacral nerve pairs |
|
shingles |
virus causing a rash in the area of affected nerves |
|
nerve plexus |
compound nerve trunk from a bunch of nerves |
|
cervical plexus |
innervates the neck and diaphragm |
|
phrenic nerve |
innervates the diaphragm |
|
brachial plexus |
innervates the shoulder girdle and arms |
|
axillary nerve |
controls the deltoid and teres minor muscles and shoulder skin |
|
musculocutaneous nerve |
controls arm flexor muscles |
|
median nerve |
controls hand flexors |
|
radial nerve |
controls all arm and hand extensor muscles |
|
ulnar nerve |
controls the fingers |
|
lumbosacral plexus |
controls pelvic girdle and lower limb |
|
obturator nerve |
controls adductors of hips |
|
femoral nerve |
controls extensors of knee |
|
gluteal nerve |
controls extensors of hip |
|
sciatic nerve |
controls knee and ankle flexors and all toes |
|
saphenous nerve |
controls only a portion of the leg skin |
|
monosynaptic reflex |
reflex with 2 nerves present |
|
patellar reflex, knee jerk |
reflex triggered by the knee tap |
|
polysynaptic reflex |
complicated reflex with a bunch of nerves involved |
|
reciprocal inhibition |
stimulating one neuron over another that controls this muscle's antagonist |
|
Babinski reflex |
presence of a ticklish sensation from stroking the sole |
|
plantar reflex |
no tickling from sole stroking |
|
posterior column pathway |
sends very fine pain, pressure and other senses |
|
spinothalamic pathway |
sends general pain and other sensations |
|
spinocerebellar pathway |
delivers muscle position info |
|
pyramidal system |
conscious muscle control |
|
extrapyramidal system |
subconscious muscle control |
|
cerebral palsy |
disease inhibiting voluntary muscle action caused by birth defects |
|
Huntington's disease |
disease in which neurons degenerate impairing all muscle and intellectual activity |