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The period of a muscle twitch during which an action potential causes the release of calcium from the sarcoplasmic reticulum is the A stimulatory phase B lag phase C relaxation phase D cont?
Wiki User
∙ 13y ago
D- contraction phase
Wiki User
∙ 13y ago
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Organelle storing calicium in resting skeletal muscle fibers?
The sarcoplasmic reticulum (SR). It releases Ca2+ During contraction, and stores it during relaxation.
What is in the sarcoplasmic reticulum in muscle?
The sarcoplasmic reticulum is a special type of smooth endoplasmic reticulum. It releases calcium ions during muscle contraction and absorbs them during relaxation.
Which structure actively pumps calcium ions out of the sarcoplasm to produce relaxation?
sarcoplasmic reticulum
How does the membrane action potential get to the sarcoplasmic reticulum?
It travels down a T-tubule.
Does contraction of muscle cell last longer than the relaxation phase?
No, relaxation lasts longer because Ca2+ ions must be actively transported back into the sarcoplasmic reticulum
When is calcium pumped into the sarcoplasmic reticulum?
When Ach enters the synaptic cleft (gap) it open chemically gated sodium channels that starts an action potential spreading through the sarcolemma of the myofibril. This action potential spreads down the T-tubules and "shocks" the sarcoplasmic reticulum into releasing calcium ions.
What are the Skeletal muscle cells that function in calcium storage?
in the sarcoplasmic reticulum of a muscle fiber/cell.
Where is calcium stored in the muscle cell?
The sarcoplasmic reticulum is known for its storage of calcium ions in muscle cells.
Where are the calcium ions stored in a muscle fiber?
In the sarcoplasmic reticulum (smooth er).
What is the sarcoplasmic reticulum in striated muscle?
Without "the following" I can't say what tha answer you're looking for is, but I would assume it is related to muscle cells as the sarcoplasmic reticulum is a cellular structure only found in the three types of muscle tissue.
Is the concentration of calcium ion greater in the sarcoplasmic reticulum or sarcoplasm of a resting muscle?
The Ca2+ ion concentration of the sarcoplasmic reticulum will be greater in a resting muscle
What is the cellular organelle in muscle fiber corrospondin to endoplasmic reticulum?
Sarcoplasmic reticulum (SR) .
