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39 Cards in this Set
- Front
- Back
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info fr: environment
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Exteroceptor
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interoceptor
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info from body organs/vessels
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proprioceptor
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info from joint, muscle
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Mechanical force stimulus
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mechanoreceptor
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chemical change
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chemoreceptor
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pain
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nociceptor
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# of neurons b/t periphery and CNS - for sensory
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receptor to spinal cord - 1 neuron
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# of neurons b/t periphery and CNS - for motor
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spinal cord to muscle - 1 neuron
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# of neurons b/t periphery and CNS - for ANS
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CNS to organ - 2 neurons
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# of neurons b/t periphery and CNS - for special senses
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Varies number of neurons
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Structure of receptor - free nerve ending
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pain, Merkel = touch
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Structure of receptor -Encapsulated nerve ending
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touch, pressure, stretch receptor = proprioceptor
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spinal nerve has ramus which have mixed sensory and motor? True or False
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True
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Back - Per. nerves- trunk
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dorsal rami C1-S5
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abdomen
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branches of ventral rami T6-T12
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thorax
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branches of ventral rami T1-T12
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nerve plexus
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a group of spinal nerves
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Cervical plexus
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C1-c4; sensory to skin of neck and occiput, motor to ant. neck mm; lesser occipital n, greater auricular n, transverse cervical n., phrenic n
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brachial
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c5-t1; branch into peripheral n. to UE, musculocutaneous n, median n, ulnar n, radial n, axillary n.
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lumbar
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L1-L4; to L/S anterior thigh, LE
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sacral
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L4-s4, to LE and perineum
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phrenic n
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C3,4, 5 and diaphram. C3 damage cause breathing problem.
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musculocutaneous n.
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motor: arm flexor
sensory: lat. forearm |
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median n
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motor: wrist & hand flexor; sensory: lat. hand
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ulnar n.
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motor: wrist and hand flexor
sensory: medial hand |
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radial n.
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motor: post. mm; sensory: post. UE
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axillary n.
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motor: deltoid; sensory: shoulder
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Lumbar plexus
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L1-L4; to ant thigh, abdominal wall and psoas mm. Peripheral nerves are: femoral, obturator, lat. femoral cutaneous n.
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femoral n
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motor: ant thigh mm; sensory: medial thigh
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obturator n.
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motor: adductor mm.; sensory: medial thigh
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lat. femoral cutaneous n.
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sensory: lateral thigh.
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sacral plexus
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L4-S4 = lumbosacral plexus, to post. thigh, lower leg, perineum; peripheral nerves are: sciatic n, (tibial n, common fibular n) and gluteal n.
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sciatic n
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post. thigh, entire leg/foot
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tibial n
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post leg, plantar area
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common fibular n
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lat. leg
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gluteal n.
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motor to gluteal mm.
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dermatomes
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only sensation on skin innervated by spinal nerve (sensory)
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Hilton's law
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joints innervated by same nerves that innervate the mm moving that joint.
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What is plexus? Name all the plexuses
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Plexus is a group of spinal n. in ventral rami, Plexuses are: Cervical, Brachialis, Lumbar and Sacral.
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