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13 Cards in this Set
- Front
- Back
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anterior/rostral
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pointing frontwards
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dorsal
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pointing up
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posterior/caudal
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pointing back
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ventral
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pointing down, belly
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ipsilateral
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structures on the same side
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contralateral
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structures on opposite sides, ex. ears
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CNS major structures
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brain and spinal cords
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PNS major structures
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PNS divides into somatic and visceral PNS/autonomic nervous system
somatic- all spinal nerves, innervate skin, joints, muscles, allows voluntary movement visceral/ANS- neurons that innervate blood vessels, organs, glands, involuntary |
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Somatic nervous system
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sensory dorsal root ganglia for skin, muscle, joints, gathers sensory info about muscle, limb position, and ext. environment, axons are PNS even if neurons are technically CNS
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Autonomic/Visceral nervous system
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motor system of viscera, smooth muscle and glands, involuntary movement, includes sympathetic, parasympathetic, and enteric subsystems
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What are the 6 main CNS regions?
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-spinal cord
-medulla -pons, cerebellum -midbrain -dicephalon -cerebral hemispheres |
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Name three spinal cord functions.
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resembles embryonic tube, runs from skull to 1st lumbar vertebra
receives sensory info from skin, joints, muscle of trunk and limbs, sends out motor neurons for voluntary and reflex muscles, receives sensations from visceral system, controls visceral functions |
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How many spinal nerves are there?
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31
the dorsal nerves are sensory, the ventral are motor |
