unit 13 bio 141 sping part 3

Nerve I (1)

Olfactory nerve

Nerve II (2)

Optic nerve

Nerve III (3)

oculomotor

Nerve IV (4)

Trochlear

Nerve V (5)

Trigeminal

Nerve VI (6)

Abducens nevre

Nerve VII (7)

facial nerve

nerve VIII (8)

vestibulocochlear

Nerve X (10)

glossopharyngeal

Nerve X (10)

Vagus

nerve XI (11)

accessory

Nerve XII (12)

Hypoglossal

Olfactory nerve

sensory

smell

cribriform plate

optic nerve

sensory

vison

optic canal

oculomotor nerve

Motor

raise eyelid

eye muscles

superior orbital fissure

trochlear nerve

motor

superior oblique muscle

superior orbital fissure

abducens

motor

lateral rectus muscle

superior orbital fissure

trigeminal nerve

mixed

*Ophthalmic

-sensory/forehead/upper eye and nose

*Maxillary

-sensory/midface/upper lip/teeth/low nose

*mandibular

-sensory/skin/motor

facial nerve

mixed

sensory

-anterior taste receptors (tongue)

motor

facial nerves

tear/salivary glands

internal acoustic meatus

vestibulocochlear nerve

sensory

vestibular branch

-balance/spatial orientation

cochlear

-hearing

-interenla acoustic meatus

glossopharyngeal

mixed

sensory

pharynx/tonsils posterior

tongue

motor

parotid gland

muscle of phayrynx

x-jugular foramen

Vagus

mixed

motor (speech/swallow)

viscera-throax/abdomen

x-jugular foramen/travel below the neck

sensory

tongue/pharynx/larynx

accessory

motorc

cranial B

soft palate

pharynx

larynx

spinal B

sternocleidomastoid

trapezeius

jugular foramen

hypoglosal

motor-tongue /swallowing

 What is a ventral ramus

network formed by ventral rami at spinal nerve

What is a dorsal ramus?

skin of back/ back muscle

41. What are dermatomes?

area of skin that sensory nerve fibers of a particular spinal nerve innervate

define nerve plexus

network formed by ventral rami at spinal nerve

fibers of spinal nerves at several levels are sorted and recombined

cervical nerve plexus

c1-c5

deep in neck

motor-musculocutaenous muscle

sensory-skin neck

phrenic- diaphragm

brachial nerve plexus

c5-t1

ulnar-flexor carpi ulnaris (motor:anterior forearm)

median-flexor carpi radialis /flexor digitorum superficialis (motor:anterior forearm)

radial(motor: posterior arm/forearm

musculocutaneous (motor: muscles anterior arm)

lumbosacral

L1-L5

obturator-motor(adductors)

femoral-motor(anterior thigh)

sciatic-motor(posterior leg thigh feet)

44. Describe the age-related changes that occur in the nervous system.

-brain cell die (temporal lobe)

-shrink 10%

-frontal cortex lose half neurons by 90

-dendrites branches decrease

-fade memory

-decrease neurotransmitters

-risk of falling

-change sleep