0
Calcium binds to troponin, which moves the tropomyosin out of the way so that myosin can bind to actin; this ultimately causes a power-stroke.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
Role of ionic calcium in muscle contraction?
triggers neurotransmitter secretion, removes contraction inhibitor, and binds with troponin.
What would occur if the uptake of calcium ions was blocked in the sarcoplasmic reticulum?
Sustained muscle contraction.
What happens if your calcium ion concentration drops by 50 percent?
In all likelihood you would die as calcium is essential for both muscle contraction and nervous system communication.
What is the most important factor in decreasing intracellular concentration of calcium ion after contraction is?
active transport of calcium into the sarcoplasmic reticulum
What is calcium channel blockers?
A calcium channel blocker is a drug that lowers blood pressure by either preventing calcium from entering cells of the cardiac muscle, or the smooth muscle cells of the blood vessel walls.
Where is calcium stored in a relaxed skeletal muscle?
yes calcium is stored in muscles as it is necessary for muscle contraction and muscle contraction is very sensitive to the amount of calcium
What minerals are needed for normal muscle contraction?
Calcium
What is an important ion for muscle contraction?
calcium
During muscle contraction calcium attaches to what?
Troponin
What ion is essential for a muscle contraction to occur?
Calcium binding to actin-myosin causes contraction. The calcium is released to the sarcomere from a specialized storage organelle, the sarcoplasmic reticulum.
What is the role of calcium ions in muscle contraction?
They bind to regulatory sites on troponin to remove contraction inhibition
The mechanism of contraction in smooth muscle is different from skeletal muscle in that?
The site of calcium regulation differs
What is the ion necessary in cross bridging to produce a muscle contraction is?
calcium
what is calcium healthy for?
Calcium is necessary for strong bones and teeth but also a key component in muscle contraction.
Role of ionic calcium in muscle contraction?
triggers neurotransmitter secretion, removes contraction inhibitor, and binds with troponin.
What is the function of cytoplasmic reticulum in the muscle fiber?
increases calcium influx in the muscle fibre, causing contraction.
Does calcium has any role in vasoconstriction?
Yes it does, as a matter of fact calcium plays a huge role in muscle contraction, as so in the smooth vascular muscle.
