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acetylcholine (ACh)

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13y ago

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In a muscle fibre, the key intracellular event that stimulates muscle contraction is known as ?

depolarisation


What do you think the effect of breaking down acetylcholine is on muscle contraction?

Breaking down acetylcholine can lead to muscle relaxation because acetylcholine is a neurotransmitter that stimulates muscle contraction. When acetylcholine is broken down, the signal for muscle contraction is reduced, resulting in muscle relaxation.


What is the key intracellular event that stimulates muscle contraction?

The key intracellular event that stimulates muscle contraction is the release of calcium ions from the sarcoplasmic reticulum within muscle cells. This calcium binds to troponin, causing a conformational change that allows myosin heads to bind to actin filaments and initiate the sliding process that shortens the muscle fibers and results in muscle contraction.


What event stimulates the contraction of cardiac muscle?

The event that stimulates the contraction of cardiac muscle is the electrical signal generated by the sinoatrial (SA) node in the heart, also known as the pacemaker of the heart. This signal causes the heart muscle cells to contract and pump blood throughout the body.


What stimulates intestinal muscle contractions?

Nicotien or anything chemical which stimulates the Nicotinic receptors.


What is faradic beauty machine's Characterisitcs?

its an ems unit that stimulates the motor point of the muscle to cause a contraction resulting in passive exercise of the muscle.


What specific event initiates the contraction?

The specific event that initiates a muscle contraction is the release of calcium ions within the muscle cell. This triggers a series of chemical reactions that ultimately lead to the sliding of actin and myosin filaments, resulting in muscle contraction.


Which hormone stimulates contraction of the myometrium?

Prostaglandin


Which hormone stimulates contraction of myometrium?

Oxytocin


What stimulates ventrciular myocardium?

heart contraction


Which of these stimulates the contraction of the gallbladder?

cholecystokinin (CCK)


The point of contact between the nerve and the muscle fibers it stimulates is called a?

The point of contact between the nerve and the muscle fibers it stimulates is called a neuromuscular junction. This junction allows for communication between the nervous system and the muscular system, facilitating muscle contraction in response to nerve impulses.