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sarcoplasmic reticulum, i think. either that are T tubules
What else can I help you with?
What is the organelle that stores calcium in resting muscle cells?
The organelle that stores calcium in resting muscle cells is the sarcoplasmic reticulum. Calcium ions are released from the sarcoplasmic reticulum during muscle contraction to trigger muscle activity.
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 immediate source of calcium ion for muscle fiber?
The immediate source of calcium ion for muscle fiber is the sarcoplasmic reticulum, a specialized organelle within muscle cells that stores and releases calcium ions in response to nerve signals. When a muscle cell is stimulated, calcium ions are rapidly released from the sarcoplasmic reticulum into the cytoplasm, triggering muscle contraction.
Which ion is stored in the sarcoplasmic reticulum?
Calcium ions are stored in the sarcoplasmic reticulum of muscle cells. These ions play a crucial role in muscle contraction by triggering the release of more calcium ions into the muscle cell, leading to the contraction of the muscle fibers.
In certain kinds of muscle cells calcium ions are stored?
Smooth ER
Where are the calcium ions stored in the muscle cells?
terminal cisternae of the sarcoplasmic reticulum
The major role of the sarcoplasmic reticulum is to regulate?
The major role of the sarcoplasmic reticulum is to regulate calcium levels in muscle cells. It stores and releases calcium ions during muscle contraction and relaxation, playing a crucial role in muscle function.
What chemical triggers sliding of muscle filaments?
The chemical that triggers the sliding of muscle filaments is calcium ions. When muscle cells receive a signal to contract, calcium ions are released into the muscle cell, binding to specific proteins and initiating the sliding mechanism between actin and myosin filaments in the muscle cells.
How does the presence of calcium binding protein in skeletal muscle affect muscle function and contraction?
The presence of calcium binding protein in skeletal muscle helps regulate the release of calcium ions, which are essential for muscle contraction. When a muscle is stimulated, calcium binding protein helps facilitate the release of calcium ions from storage sites within the muscle cells. These calcium ions then bind to proteins that are involved in the contraction process, allowing the muscle to generate force and movement. In summary, calcium binding protein plays a crucial role in controlling the availability of calcium ions for muscle contraction, ultimately influencing muscle function.
Normally stored in the terminal cisternae of the sarcoplasmic reticulum?
Calcium ions are normally stored in the terminal cisternae of the sarcoplasmic reticulum in muscle cells. When muscle contraction is initiated, these stored calcium ions are released into the cytoplasm, triggering muscle contraction.
What structure lets calcium ions enter cardiac muscle cells?
The structure that allows calcium ions to enter cardiac muscle cells is the voltage-gated L-type calcium channels, also known as dihydropyridine receptors. These channels open in response to depolarization of the cell membrane, allowing calcium to flow into the cell and trigger muscle contraction.
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.
