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What is the specific structure within a muscle cell that contains the sarcomere I band and is responsible for muscle contraction?
The specific structure within a muscle cell that contains the sarcomere I band and is responsible for muscle contraction is called the myofibril.
Which pump is responsible for muscle contraction through depolarization of muscle cell membrane?
Ca2+
What muscle cell protein acts as an ATPase enzyme?
The muscle cell protein that acts as an ATPase enzyme is myosin. Myosin is responsible for converting chemical energy from ATP into mechanical energy during muscle contraction.
What chemical stimulates muscle contraction?
acetylcholine (ACh)
What type of muscle is capable of rapid contraction and causes skeletal movement?
Skeletal or voluntary muscle is capable of rapid contraction and is responsible for skeletal movement.
The energy source that is directly responsible for muscle fiber contraction is?
ATP
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 does the normal gene responsible for hyperkalemic periodic paralysis responsible for?
The normal gene is responsible for a muscle protein controlling the flow of sodium during muscle contraction.
The sites where a chemical substance is transmitted from the presynaptic terminal of an axon to the postsynaptic membrane of a muscle fiber are called?
The sites where a chemical substance is transmitted from the presynaptic terminal of an axon to the postsynaptic membrane of a muscle fiber are called neuromuscular junctions. At these junctions, the neurotransmitter acetylcholine is released from the presynaptic terminal and binds to receptors on the postsynaptic membrane, initiating muscle contraction.
Chemical released to stimulate muscle contraction?
Acetylcholine is the primary neurotransmitter released by motor neurons at the neuromuscular junction to stimulate muscle contraction. It binds to receptors on the muscle cell membrane, initiating a series of events that ultimately lead to muscle contraction.
What minerals are needed for muscle contraction and conduction of nerve impulses?
Minerals such as calcium, magnesium, sodium, and potassium are essential for muscle contraction and nerve impulse conduction. Calcium is particularly important for initiating muscle contractions and transmitting nerve impulses, while magnesium, sodium, and potassium help regulate muscle relaxation and contraction as well as nerve impulse transmission.
Interactions between actin and myosin filaments of the sarcomere are responsible for what?
The interactions between actin and myosin filaments of the sarcomere are responsible for muscle contraction. Myosin heads bind to actin filaments, forming cross-bridges that pull the actin filaments towards the center of the sarcomere. This sliding action shortens the sarcomere, leading to muscle contraction.
