nerves Flashcards
(22 cards)
Cranial Nerve 1
olfactory -smell
cranial nerve 2
optic-vision
cranial nerve 3
oculomotor-eye movement, pupil size, focusing lens
cranial nerve 4
trochlear- eye movement
cranial nerve 5
trigeminal - sensations from the head and neck, chewing, taste
cranial nerve 6
abducens- eye movement
cranial nerve 7
facial- facial expressions, salivation, tears, tastes
cranial neve 8
vestibulocochlear - balance, hearing
cranial nerve 9
glossopharyngeal- tongue movement, swallowing, salivation, taste
cranial nerve 10
vagus- sensation from larynx, pharynx, and thoracic and abdominal viscera; movement of the larynx, pharynx and esophagus, heart rate, digestion
cranial nerve 11
accessory- shoulder and neck movement
cranial nerve 12
hypoglossal- tongue movement
dorsal root of the spinal nerve
the afferent sensory root and carries sensory info to the brain. its cell bodies lie in a ganglion outside the spinal cord
ventral root of the spinal nerve
the efferent motor root and carries motor info from the brain. its cell bodies lie in the ventral horn of the spinal cord
spinal nerve
made of a dorsal and ventral root that carries both sensory and motor neurons. the spinal nerve then splits into multiple branches that spread outward to connect with various body structures
brachial plexus
a network of nerves formed by the ventral branches of cervical nerves 6,7,8. and sometimes c5. and thoracic nerves 1 and 2 . these innervate the structures of the forelimb.
lumbosacral plexus
a network of nerves that supplies most structures of the hindlimbs it is formed from the ventral branches of lumbar spinal nerves 3,4,5,6, and 7 and sacral spinal nerves 1,2, and 3.
femoral nerve
runs deep within the quad muscle to supply the extensors of the stifle. nerve of the lumbosacral plexus
sciatic nerve
the largest nerve of the lumbosacral plexus that runs over the ischium and along the lateral surface of the thigh deep within the biceps femoris to supply the extensors of the hip and flexors of the stifle
pelvic and pudendal nerves
provide for normal bowel and bladder function
obturator nerve
innervates the adductor muscles of t he thigh-as it passes over the pelvis it becomes susceptible to compression during birth
autonomous skin zones
known as dermatomes, specific areas of the skin that are innervated by individual spinal nerves each spinal nerve corresponds to a particular autonomous skin zone, they help vets to localise a problem to a specific region of the body