Put the following steps of muscle contraction in order -ATP is broken down by AT
ID: 3511372 • Letter: P
Question
Put the following steps of muscle contraction in order -ATP is broken down by ATPase enzyme in myosin head. Muscle action potential spreads over the sarcolemma. Calcium is released from terminal cisternae of the sarcoplasmic reticulum. -Acetylcholine (ACh) is released from synaptic vesicles. Myosin cross bridges bind to actin filaments. New ATP molecules bind with myosin heads for detachment from actin. stimulus travels down the nerve. Myosin crossbridges pull actin filaments together. -Action potential travels down the T tubules. Calcium combines with troponin. ACh crosses the neuromuscular junction and binds with the sarcolemma. sarcoplasmic reticulum is depolarized. Sarcolemma is depolarized.Explanation / Answer
Stimulus travels down the nerve.
ACh releases from synaptic vesicles.
Ach crosses the neuromuscular junction and binds with sarcolemma.
Sarcolemma is depolarised.
Muscle action potential spread over the sarcolemma.
Action potential travels down the T tubules.
Sarcoplasmic reticulum is depolarised.
Calcium is released from terminal cisternae of the sarcoplasmic reticulum.
Calcium combines with troponin.
ATP is broken down by ATPase enzyme in myosin head.
Myosin crossbridges bind to actin filament.
Myosin crossbridges pull actin filaments together.
New ATP molecules bind with myosin heads for dettachment from actin.
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