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Muscle Physiology
UCI Physio Test 1
Question | Answer |
---|---|
desmin and vimentin | keep sarcomeres in line |
alpha-actinin | makes up the Z-line |
costamere dystroglycan complex | laminin, dystroglycan alpha, sarcoglycan, dystroglycan beta, dystrophan (gamma actin to alpha actinin to actin), alpha syntrophin, alpha dystrobrevin, desmin |
myosin structure | hexameric, 2HC, 2 essential LC, 2 regulatory LC |
innervation ratio | # of muscle fibers innervated by a single motor neuron |
Ach receptors | 2alpha, beta, gamma, delta; Ach binds to alpha and propagation doesn't work till both alpha's are bound |
terminal cistaernae | part of sarcoplasmic reticulum near the t-tubule |
DHPR | dihydropryadine receptors; found on t-tubule; when these open, they open the RyR's |
SERCA | SR Ca++ ATPase pumps |
what do SO, FOG, and FG stand for | slow-oxidative, fast-oxidative-glycolytic, and fast glycolytic |