Term
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Definition
| divergence of nocioceptpr axons to higher and lower spinal cord segments,important for activating neural cicuits for reflex movement away from a stimulus |
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Term
| 2 main spinal cord sensory pathways |
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Definition
spinothalamic tract- carries info regarding pain, temperature, and crude touch
posterior column/medial lemniscus pathway carries info about fine touch, temp, and crude touch |
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Term
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Definition
| axon terminals and dendrites, nociception processing area of posterior horn contains elements of endogenous opiate pain-suppression system that involves the hypothalmus and part of the brainstem reticular formation |
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Term
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Definition
| medial half of posterior column, lower limb primary afferent(1st order) axons carrying fine touch, conscious proprioception and vibration info to posterior column nucleus (nucleus gracilis) of caudal medulla |
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Term
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Definition
| lateral half of posterior column, upper limb primary afferent first order axons carrying fine touch, conscious propprioception and vibration info to posterior column of nucleus(nucleus cuneatus) of caudal medulla |
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Term
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Definition
| second order axons carrying pain, temp, and crude touch information |
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Term
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Definition
| mid-line crossing point of many different axons, some commissural but others are decussations (axons projecting from the dorsal horn into the spinothalmic tract) |
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Term
| contents of the inquinal canal |
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Definition
| spermatic cord, round ligament of the uterus, ilioinguinal nerve |
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Term
| contents of the spermatic cord |
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Definition
| vas deferens, testicular artery, pampiniform plexus of veins, visceral sensory and motor nerves running with the blood vessels |
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Term
| differences between the tunica dartos and cremaster muscle |
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Definition
tunica dartos is smooth muscle, sympathetic innervation and for temperature control
cremaster is skeletal muscle, somatic innnervation, and has a protective reflex of pulling the scrotum and testis up on the side stroked innervation is L1-L2
nerve for both is the gentifemoral nerve anbd ilioquinal nerve |
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