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terminal cisternae of the sarcoplasmic reticulum
Ellen Funk
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Where is calcium stored in the muscle?
The sarcoplasmic reticulum is known for its storage of calcium ions in muscle cells.
What is the purpose of the sarcomere?
To contract when calcium ions are released into the muscle cell cytoplams.
What ion initiates muscle contraction?
when you are working out and you are lifting a weight....
In relaxed muscle fiber which structure stores calcium?
It is the Terminal Cisternae- Sac like regions of the sarcoplasmic reticulum that serve as specialized resevoirs of calcium ions
What is the role of the triad in muscle contraction?
Once a triad has been achieved, Calcium ions get released. Once they're released they bind to troponin, which helps begin muscle contraction.
In certain kinds of muscle cells calcium ions are stored?
Smooth ER
Which substance is stored in the muscle's endoplasmic reticulum and then released when a nerve signal stimulates a muscle fiber?
Calcium ions
Where is calcium stored in the muscle?
The sarcoplasmic reticulum is known for its storage of calcium ions in muscle cells.
Where is calcium stored in the muscle cell?
The sarcoplasmic reticulum is known for its storage of calcium ions in muscle cells.
What structure lets calcium ions enter cardiac muscle cells?
sarcoplasmic reticulum
What are calcium ions stores as in muscle cells?
sarcoplasmic reticulum, i think. either that are T tubules
What bridge forms between Calcium ions?
Calcium bridges form between muscle cells. The calcium ions bind to troponin-tropomyosin molecules in the grooves of actin filaments and form crossbridges.
Where are Ca2 plus ions stored?
Ca 2+ ( calcium ions ) are stored in the smooth endoplasmic reticulum.
Chemical a binds and blocks acetylcholine receptors of muscle cells chemical b floods the cytoplasm of muscle cells with calcium ions which would make the best muscle relaxant and why?
Chemical A, because if the cytoplasm is flooded with calcium, then the actin and myosin would slide into eachother, causing the muscle to contract.
What does the Smooth ER do to keep the cell running?
The Smooth Endoplasmic Reticulum (SER) is involved in lipid metabolism, drug detoxification, and calcium storage. It helps maintain cellular functions by synthesizing lipids, such as steroids and phospholipids, and by detoxifying harmful substances through enzymatic reactions. Additionally, the SER plays a role in regulating calcium levels within the cell, which is important for various cellular processes.
Which protein inhibits skeletal muscle contraction and what ion removes the inhibition?
Tropomyosin; calcium ions
What Steps in muscle contraction require calcium ions?
Calcium ions bind to troponin, changing troponin's shape
