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sarcoplasmic reticulum

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What is the function of the calcium in the sarcoplasm?

Calcium in the sarcoplasm plays a crucial role in muscle contraction. It binds to troponin, initiating a cascade of events that ultimately leads to the exposure of binding sites on actin, allowing myosin to bind and generate muscle force.


What is specialized for the storage and release of calcium?

The endoplasmic reticulum is specialized for the storage and release of calcium. This organelle has calcium pumps that actively transport calcium ions into its lumen for storage, and calcium channels that release calcium into the cytoplasm during cell signaling processes.


Lewis dot structure for calcium phosphate?

The Lewis structure for calcium phosphate, Ca3(PO4)2, will have calcium in the center with phosphate groups attached. Each phosphate group consists of one phosphorus atom with four oxygen atoms surrounding it. The overall structure will have a total of three calcium atoms and two phosphate groups.


What is the Electron dot structure formed between calcium and chlorine?

The electron dot structure between calcium and chlorine involves calcium donating its two valence electrons to achieve a stable octet and chlorine accepting those electrons to fill its outer shell. The resulting structure shows calcium with no dots, and each chlorine atom with seven dots around it.


Is calcium chloride a hydrate?

No, calcium chloride is not a hydrate. It is a salt compound composed of calcium and chloride ions. Hydrates are compounds that contain water molecules attached to their structure.

Related Questions

What events occurred during muscle relaxation?

Muscle tension declines, myosin releases thin filaments, and calcium levels in the sarcoplasm fall.


What transports calcium out of the sarcoplasm?

Calcium is transported out of the sarcoplasm by means of special ion pumps.


Does relaxation require ATP?

No, relaxation does not require ATP. ATP is primarily used for muscle contraction. Relaxation occurs when calcium ions are actively pumped out of the muscle cell, which does not require ATP.


What is the function of the calcium in the sarcoplasm?

Calcium in the sarcoplasm plays a crucial role in muscle contraction. It binds to troponin, initiating a cascade of events that ultimately leads to the exposure of binding sites on actin, allowing myosin to bind and generate muscle force.


What does the onset of tetanus indicate about the amount of free calcium in the sarcoplasm?

At tetanus levels of released Calcium in the the intracellular compartment are at their highest level.


Is the concentration of calcium ion greater in the sarcoplasmic reticulum or sarcoplasm of a resting muscle?

The concentration of calcium ion is greater in the sarcoplasmic reticulum compared to the sarcoplasm of a resting muscle. This is because the sarcoplasmic reticulum stores and releases calcium ions during muscle contraction.


What ion is released from the sarcoplasm when depolarization occurs?

When depolarization occurs in the sarcoplasm of muscle cells, calcium ions (Ca2+) are released from the sarcoplasmic reticulum. This release triggers muscle contraction by allowing actin and myosin filaments to interact and generate force.


What occur during muscle relaxations?

Muscle tension declines, myosin releases thin filaments, and calcium levels in the sarcoplasm fall.


What structure in skeletal mucle cells functions in calcium storage?

The structure within skeletal muscle cells responsible for calcium storage is the sarcoplasmic reticulum. It stores and releases calcium ions, which are crucial for muscle contraction and relaxation. When a muscle cell receives a signal to contract, calcium is released from the sarcoplasmic reticulum, allowing the muscle to shorten and generate force.


What is diffused with ATP and needed in muscle relaxation?

Calcium


When does cross bridge cycling end?

Cross bridge cycling ends when calcium is actively transported back into the sarcoplasmic reticulum, leading to a decrease in intracellular calcium levels. This causes the tropomyosin to block the binding sites on actin, preventing myosin from interacting and forming cross bridges. This relaxation of the muscle allows the muscle fibers to return to their resting state.


What has the author Marie Beauregard written?

Marie Beauregard has written: 'Calcium uptake in trained and exhausted animals' -- subject(s): Calcium in the body, Exercise, Fatigue, Hamsters, Physiological aspects, Physiological aspects of Exercise, Physiology, Rats, Sarcoplasm