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What neurotransmitter causes muscle movement?
Acetylcholine is the primary neurotransmitter responsible for muscle movement. It is released from motor neurons at the neuromuscular junction to stimulate muscle contraction.
Which neurotransmitter is responsible for the excitatory phase of muscle contraction a. dopamine b. serotonin c. GABA d. none of the above?
None of the above. The neurotransmitter responsible for the excitatory phase of muscle contraction is acetylcholine. It is released from motor neurons at the neuromuscular junction to stimulate muscle fibers.
What substance is released by the nervous system and excites muscle cells?
Acetylcholine is the neurotransmitter released by the nervous system that excites muscle cells, leading to muscle contraction.
What energy molecule is responsible for muscle contraction?
Calcium, it's found in the Sarcoplasmic Reticulum.
Role of ionic calcium in muscle contraction?
Ionic calcium plays a crucial role in muscle contraction by binding to the protein troponin, which then allows for the movement of tropomyosin, enabling myosin heads to bind to actin filaments and form cross-bridges. This process ultimately leads to muscle fiber contraction.
What does the normal gene responsible for hypokalemic periodic paralysis responsible for?
The normal gene is responsible for a muscle protein controlling the flow of calcium during muscle contraction.
What ion is responsible for the contraction of cardiomyocytes?
Calcium ions are primarily responsible for the contraction of cardiomyocytes. When calcium ions enter the cardiomyocyte, they trigger the muscle fibers to contract by binding to the regulatory proteins that control muscle contraction. This process is crucial for the heart to effectively pump blood throughout the body.
What neurotransmitter is released at the neuromuscular junction?
Acetylcholine is the primary neurotransmitter released at the neuromuscular junction. It is responsible for transmitting signals from motor neurons to muscle fibers, leading to muscle contraction.
Where is calcium stored in a relaxed skeletal muscle?
yes calcium is stored in muscles as it is necessary for muscle contraction and muscle contraction is very sensitive to the amount of calcium
What minerals are needed for normal muscle contraction?
Calcium
The structure storing calcium in the skeletal muscle fibers at rest is the?
The structure responsible for storing calcium in skeletal muscle fibers at rest is the sarcoplasmic reticulum. This organelle regulates the release of calcium ions during muscle contraction to trigger the muscle fiber to contract.
What is an important ion for muscle contraction?
calcium
