-
*Usually a vague sensation of dull aching, gnawing or burning...
*Important stimuli for this type of pain are extreme stretching of tissue, ischemia, irritating chemicals and muscle spasm
visceral pain
-
pain stimuli arising in one part of the body are perceived as coming from another part
referred pain
-
cord-like organ that is part of the peripheral nervous system
Nerve
-
layer of loose CT that surrounds each axon
endoneurium
-
CT that binds groups of fibers into bundles called fascicles
perineurium
-
encloses all the fascicles to form a nerve
epineurium
-
*Purely sensory cranial nerve
*carry afferent impulses for sense of smell
*CLINICAL TESTING: sniff aromatics
Olfactory I
-
-
*Purely Sensory
*carry afferent impulses for vision
*CLINICAL TESTING: Snellen eye chart, peripheral vision
Optic Nerve II
-
visual defects are known as:
anopsias
-
*innervates 4 of the 6 extrinsic eyeball muscles
*contain proprioceptive afferents: Somexaatic motor fibers, Parasympathetic motor fibers, sensory afferents
*CLINICAL TESTING: examine pupils for size, shape and equality
Oculomotor Nerve III
-
*Innervates superior oblique eye muscle
CLINICAL TESTING:Test with Oculomotor Nerve III
Trochlear Nerve IV
-
*largest cranial nerve in diameter
*sensory to face/motor to chewing
*Mixed, has 3 divisions
1.opthalmic V1
2.Maxillary V2
3.Mandibular V3
Trigeminal Nerve V
-
*Innervates lateral rectus eye muscle
*CLINICAL TESTING: tested with nerves III and IV
Abducens Nerves VI
-
inflammation of the Trigeminal nerve,is widely considered to produce the most excruciating pain known
trigeminal neuralgia
-
*Motor to face and taste
*mixed, parasympathetic motor impulses to the lacrimal gland and salivary gland
*CLINICAL TEST: anterior 2/3 of tongue to taste sweet, salty, sour, and bitter
Facial Nerve VII
-
What are the 5 branches of Facial Nerve VII
- Temporal
- Zygomatic
- Buccal
- Mandibular
- Cervical
-
Paralysis of facial muscles on affected side and partial loss of taste sensation. May develop rapidly (overnight) Caused by inflamed or swollen facial nerve
Bell's Palsy
|
|