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What mineral is released within muscle cells to trigger contractions?
Calcium ions are the mineral released within muscle cells to trigger contractions. When a muscle is stimulated by a nerve impulse, calcium is released from the sarcoplasmic reticulum into the cytoplasm. This increase in calcium concentration allows the interaction of actin and myosin filaments, facilitating muscle contraction. After contraction, calcium is reabsorbed, leading to muscle relaxation.
The narrow space between the synaptic terminal and the muscle fiber is the?
synaptic cleft, where neurotransmitters are released by the synaptic terminal and bind to receptors on the muscle fiber to trigger a muscle contraction.
What stimulates intestinal muscle contractions?
Nicotien or anything chemical which stimulates the Nicotinic receptors.
How does destruction of Ach receptors on the sarcolemma effect muscle contraction?
The destruction of acetylcholine (ACh) receptors on the sarcolemma impairs muscle contraction by preventing effective communication between motor neurons and muscle fibers. When ACh is released from motor neurons, it binds to these receptors to initiate the depolarization of the muscle cell membrane, leading to contraction. Without sufficient ACh receptors, the muscle fibers cannot respond adequately to the neurotransmitter, resulting in weakened or absent muscle contractions. This is a characteristic feature of conditions like myasthenia gravis.
What ions serve as a trigger for muscle contractions by removing the inhibition of the troponin molecule?
Calcium ions
When a girl has an organism is an egg released?
No, an egg is not released when a girl has an orgasm. Orgasms are part of the sexual response cycle and involve muscle contractions and release of tension, but they do not trigger the release of an egg from the ovaries.
What would happen to people exposed to a chemical warfare agent that blocked acetylcholine from binding to muscle receptors?
Muscle contractions would be prevented, causing paralysis.
Where does the acetylcholine released for muscle contraction bind?
Sarcolema receptors
Why does not the patellar reflex happen when your leg is straight?
When the leg is straight, the muscle spindle receptors in the quadriceps muscle are not stretched enough to stimulate a reflex response. The reflex occurs when the muscle is quickly lengthened, activating the sensory receptors in the muscle and sending a signal to the spinal cord to trigger a reflexive contraction of the quadriceps muscle.
What are the differences between isometric, concentric, and eccentric muscle contractions?
Isometric muscle contractions happen when the muscle stays the same length, concentric contractions occur when the muscle shortens, and eccentric contractions occur when the muscle lengthens.
What is the role of acetylcholine in skeletal muscle contractions?
acetylcholine as far as i know is a neurotransmitter that ativates the mscle cells.
How does vesicare work?
Vesicare (solifenacin) works by blocking certain receptors in the bladder, called muscarinic receptors. By doing so, it reduces bladder muscle contractions and helps to control symptoms of overactive bladder, such as frequent urination, urgency, and incontinence.
