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Unformatted text preview: Cgsc201 Lec 7 Notes: Movement 19/10/2007 00:53:00 ← Rostral to caudal ← Dorsal to ventral ← Medial to lateral (trunk to extremities) ← Spinal cord is topographically organized. ← ← dorsal horns: sensory (afferent) • dorsal horns “affected” by incoming sensory info ← ventral horns: motor (efferent) • bringing message to muscles, have an effect on them ← ← release ACH for transmitter • @ neuromuscular junction o ligand gated channels ← ← calcium release within muscle muscle contraction ← once ACH is bound, it gets destroyed rapidly in the cleft • site of many poisons interfering with release, or blocking receptors ← ← muscle spindle • if you contract muscle, afferent stops firing and gets floppy o Golgi tendon organ fires when muscle contracts ← ← feedback prevents excessive exertion or inhibition ← ← muscle spindles prevent muscle from getting too stretched/relaxed ←...
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This note was uploaded on 04/06/2008 for the course PSYC 317 taught by Professor Gildiesendruck during the Fall '07 term at Yale.
- Fall '07