0
What serves as the actual trigger for muscle contractionby removing inhibition of the troponin molecules?
Wiki User
∙ 12y ago
sodium-potassium ions
Wiki User
∙ 12y ago
Wiki User
∙ 12y agocalcium
Add your answer:
Earn +20 pts
What ions serve as a trigger for muscle contractions by removing the inhibition of the troponin molecule?
Calcium ions
What holds tropomyosin in place at rest?
troponin molecules.
What is the role of calcium ions in muscle contraction?
They bind to regulatory sites on troponin to remove contraction inhibition
In muscle contraction calcium apparently acts to?
Muscle contraction is regulated by calcium ions, which will change thin filament into an activated state by binding to troponin. The binding of calcium to the troponin changes it's shape so the myosin binding sites on the actin (thin filament) are exposedbind to regulatory sites on troponin to remove contraction inhibition
What happens when calcium binds troponin?
tropomyosin moves out of the groove between the actin molecules.
What blocks the binding sites on actin?
TROPOMYOSIN MOLECULES ( troponin hold the tropomyosin in place)
Binding sites on the actin molecules are covered by troponin and?
muscle that produces a give movement
Excitation-contraction coupling refers especially to the?
calcium release and binding to troponin molecules
Serves as the actual go signal for muscle contraction?
in anatomy what destroys acetylcholine(I believe that Ans to the 1st Q: would be) calcium ionsremove the inhibition of the troponin molecules which then triggers muscles contraction.(the 2nd Ans would be) acetylcholinesterase distroys Ach in the synaptic cleft after nervous stimulation stops.
Which molecules are involved with regulation of cross bridge attachment activity?
calcium ions, troponin, and tropomyosin
When a muscle is at rest the active sites on the actin are blocked by?
TROPOMYOSIN MOLECULES ( troponin hold the tropomyosin in place)
What three molecules make up the thin filament?
1. Actin 2. Tropomyosin 3. Troponin
