2401659
MUSCLE CONTRACTION
- events
- electrical
- mechanical
- electrical
- action potencial of the neuron from -70 to +30
- is follow
- by the action potencial of the muscle fiber 2msec from -90 to
+30
- that becomes into
- contraction
- Calcium is liberated from the RS
- 4 types
- tetanus
- complete
- the contraction is equal until the fatigue starts
- the contraction is equal until the fatigue starts
- incomplete
- the relaxation period is shorter and that makes the contraction stronger
- the relaxation period is shorter and that makes the contraction stronger
- complete
- graduated contractions
- estimulate individual fibers and the force depends in
how many fibers contract
- estimulate individual fibers and the force depends in
how many fibers contract
- summation
- a secon charge instabtly after the first one tha prduce another contraction
- a secon charge instabtly after the first one tha prduce another contraction
- espasmodic contraction
- enough voltage to make the muscle contract an relax very
fast
- enough voltage to make the muscle contract an relax very
fast
- tetanus
- Calcium is liberated from the RS
- relaxation
- action potencial should be suspended
- calcium should return to the RS
- ATP is needed for both
- ATP works for 8 contractions
- active Ca pumps
- ATP works for 8 contractions
- action potencial should be suspended
- contraction
- latent period
- the time between the start of the first action
potential to the start of the contraction phase
- the time between the start of the first action
potential to the start of the contraction phase
- that becomes into
- by the action potencial of the muscle fiber 2msec from -90 to
+30
- latent period
- is follow
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