Partial preview of the text
Download Peripheral Nervous System | BIOL 214 - Basic Human Anatomy and more Quizzes Biology in PDF only on Docsity!
sensory pathway
sensory receptor-sensory neuron-CNS
TERM 2
free nerve endings
DEFINITION 2
end of neuron is the receptorpain
TERM 3
encapsulated nerve endings
DEFINITION 3
layerstouch
TERM 4
chemoreceptors
DEFINITION 4
reacts to chemicalsfound on tongue (reacts to chemicals in
food)
TERM 5
photoreceptor
DEFINITION 5
sensitive to lightfound in retinal of eye
thermoreceptor
reacts to change in temperature
TERM 7
mechanoreceptors
DEFINITION 7
reacts to physical distortionbeing bent, smushed,
twistedfound in hears for hearing
TERM 8
motor pathway
DEFINITION 8
CNS-motor neuron-effector
TERM 9
neuromuscular junction
DEFINITION 9
where the neuron communicates with the muscle cell
TERM 10
neurotransmitter
DEFINITION 10
secreted by the neuron onto the muscle, triggers muscle cell
to react
CN V Trigeminal
sensory to the face but is motor to the muscles of
masticationfits in foramen ovale, foramen
rotundumtrigeminal neuralgia: excruciating face pain
TERM 17
CN VI Abducens
DEFINITION 17
supplies 1 of 6 muscles that move eyeballmuscle that moves
eyeball laterally
TERM 18
CN VII
Facial
DEFINITION 18
motor to the muscles of facial expressionsenses taste on
anterior 2/3 of tongueBells Palsy: nerve can no longer make
facial expression
TERM 19
CN VIII Vestibulocochlear
DEFINITION 19
sensing hearing and equilibrium
TERM 20
CN IX Glossopharyngeal
DEFINITION 20
sensory for taste at posterior 1/3 of tonguemotor to the
muscles of swallowing
CN X Vagus
supplies all organs in thoracic cavity and most organs in
abdominal cavity"the wandering nerve", only nerve that
leaves head and supplies structures elsewhere
TERM 22
CN XI Accessory
DEFINITION 22
sends motor signals to SCM and trapezius musclebulk of
innervation from cervical spinal nerves
TERM 23
CN XII Hypoglossal
DEFINITION 23
below the tonguemotor to the muscles that move tongue
TERM 24
spinal nerves
DEFINITION 24
31 pairs:8 cervical12 thoracic5 lumbar5 sacral1 coccygeal
TERM 25
dorsal root
DEFINITION 25
part of spinal nerve that attaches to back of spinal
cordsensory fibers enter cord
root
what attaches spinal nerves to the cord
TERM 32
ramus
DEFINITION 32
branch
TERM 33
spinal nerve plexuses
DEFINITION 33
network of ventral rami of spinal nervesthoracic nerves wrap
around individually (no plexus)
TERM 34
cervical plexus (C1-C4)
DEFINITION 34
network of nerves created by ventral rami of spinal nerves
C1-C
TERM 35
phrenic nerve
DEFINITION 35
nerve that supplies the diaphragmincludes C3-C5C3, C4, C
keep the diaphragm alive!
brachial plexus (C5-T1)
supplies entire arm
TERM 37
axillary nerve
DEFINITION 37
supplies shoulder joint (deltoid, rotator cuff, etc.)
TERM 38
muculocutaneous nerve
DEFINITION 38
supplies front of upper arm (biceps brachii)
TERM 39
median nerve
DEFINITION 39
supplies lateral half of forearm and medial half of hand
TERM 40
ulnar nerve
DEFINITION 40
supplies medial side of forearm and medial half of hand
sciatic nerve
continues down leg all the way to footcontains tibial and
common fibular nerves
TERM 47
superior and inferior gluteal
nerves
DEFINITION 47
branches in gluteal region, supplies gluteal muscles
TERM 48
pudendal nerve
DEFINITION 48
supplies perineum (most inferior part of torso)
TERM 49
intercostal nerves
DEFINITION 49
thoracic nerves (wraps around individually)
TERM 50
dermatomes
DEFINITION 50
area of skin supplied by a cutaneous branch of a single spinal
nerve
