terminal cisternae of the sarcoplasmic reticulum
Cisternae/cistern
It is the Terminal Cisternae- Sac like regions of the sarcoplasmic reticulum that serve as specialized resevoirs of calcium ions
The enlarged portion of sarcoplasmic reticulum on either side of a transverse tubule is called a terminal cisterna. These terminal cisternae play a vital role in the excitation-contraction coupling of skeletal muscle cells. They store and release calcium ions, which are essential for muscle contraction.
The skeletal muscle fiber triad relationship refers to the structural arrangement of a T-tubule sandwiched between two terminal cisternae of the sarcoplasmic reticulum. This triad structure plays a crucial role in excitation-contraction coupling, as it allows for the transmission of action potentials deep into the muscle fiber to trigger calcium release from the sarcoplasmic reticulum for muscle contraction.
terminal cisternae of the sarcoplasmic reticulum
The part of the sarcoplasmic reticulum where calcium ions are stored is called the terminal cisternae. These structures are found at the ends of the sarcoplasmic reticulum and play a key role in releasing calcium ions into the muscle cell during muscle contraction.
Cisternae/cistern
Terminal cisternae of the sarcoplasmic reticulum release Ca2+ when signaled by an action potential traveling along the T-tubules. This Ca2+ release triggers muscle contraction by binding to troponin and initiating the sliding of actin and myosin filaments.
The Sarcoplasmic Reticulum stores calcium and releases it through the terminal cisternae into the tubule.
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.
It is the Terminal Cisternae- Sac like regions of the sarcoplasmic reticulum that serve as specialized resevoirs of calcium ions
It is the terminal cisternae
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.
one transverse tubule and two terminal cisternae
The terminal cisternae release calcium ions into the muscle cell in response to an action potential. This calcium triggers muscle contraction by binding to troponin, which allows myosin to bind with actin and initiate the sliding filament mechanism.
The sarcoplasmic reticulum is known for its storage of calcium ions in muscle cells.