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What effect does stimulation of the acetylcholine receptors of the heart have on cardiac output?
Wiki User
∙ 8y ago
The effect would be an increase in cardiac output. However, there is a maximum level and then the heart would not have time to fill fully and the output would decrease.
Ambrose Krajcik
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What effect does stimulation of acetylcholine receptors of the heart have on cardiac output?
The effect would be an increase in cardiac output. However, there is a maximum level and then the heart would not have time to fill fully and the output would decrease.
What is Overall effect of curare in an organism?
Curare is a plant-derived poison that blocks nicotinic acetylcholine receptors at the neuromuscular junction, leading to muscle relaxation and paralysis. This can result in impaired breathing and death if respiratory muscles are affected.
What effect does depolarization have on the motor end plate once action potentials arrive at the synaptic end bulb?
Depolarization at the motor end plate upon arrival of action potentials triggers the release of neurotransmitter acetylcholine into the synaptic cleft. This acetylcholine then binds to receptors on the muscle cell membrane, initiating muscle contraction by depolarizing the muscle cell membrane and allowing the action potential to propagate along the muscle fiber.
Is decrease GI motility and secretion has a cholinergic effect?
No, decreased gastrointestinal (GI) motility and secretion are not typically associated with a cholinergic effect. Cholinergic stimulation usually leads to increased GI motility and secretion. Other factors like sympathetic activity or certain drugs may be responsible for decreased GI motility and secretion.
What is the mechanism of AchE inhibitor side effects of weakness?
The mechanism of acetylcholinesterase (AChE) inhibitor side effects such as weakness is due to excessive accumulation of acetylcholine at cholinergic synapses. This leads to overstimulation of muscarinic and nicotinic receptors, causing symptoms like muscle weakness. The excess acetylcholine can also affect neuromuscular junction function, contributing to weakness.
What effect does stimulation of acetylcholine receptors of the heart have on cardiac output?
The effect would be an increase in cardiac output. However, there is a maximum level and then the heart would not have time to fill fully and the output would decrease.
What is the effect of pilocarpine on heart rate?
Pilocarpine stimulates the release of acetylcholine from parasympathetic neurons. Therefore, it stimulates the effect of vagal stimulation on the heart.
What effect does Curare have on muscle tissue?
It blocks the nicotinic cholinergic receptors on the muscle that normally bind the acetylcholine released by the motor neuron.
What effect will organopesticides have on muscle tissue?
Organopesticides will increase the severity of muscle contraction beyond normal conditions. Acetylcholine esterase inhibition will allow a more than normal amount of acetylcholine to bind to receptors.
What is the effect of parasympathetic stimulation on this salivary glands?
Parasympathetic stimulation increases saliva production in the salivary glands by causing the release of acetylcholine, which binds to receptors on the gland cells and triggers the secretion of saliva. This response helps with digestion and keeps the mouth moist.
How does a depressant affect the brain function?
They affect GABA, NMDA, opiod, adrenergic, histamine and acetylcholine receptors in your brain. Depressants can effect other parts of your brain aswell, these are just the parts of it that actually cause the depressant effects of the drugs. Alcohol for example effects the GABA, NMDA, acetylcholine and serotonin receptors but it's effect on the serotonin receptor doesn't cause any depressant effect but rather adds to the euphoric effects of alcohol.
How does jimson weed effect the body?
Its deliriants such as scopolamine act as competitive antagonist at muscarinic acetylcholine receptors. This affects the parasympathetic nervous system and leads to numerous potentially dangerous issues.
What is the effect of curare on eliciting an action potential?
Curare blocks nicotinic acetylcholine receptors, preventing depolarization and inhibiting muscle contraction. This leads to muscle paralysis and prevents the generation of action potentials in the affected muscle fibers.
Which neurotransmitter is released into the heart by the vagus nerves that slow the heart?
The parasympathetic division of the autonomic innervation of the heart releases acetylcholine from its varicosities (the sites where neurotransmitter is released). The acetylcholine binds to M-2 muscarinc receptors to mediate the negative chronotropic (slowing of heart rate) effect. This also mediates a negative inotropic (lowering of force of contraction) effect.
What causes vagal escape?
when cardiac muscle begins to contract after a brief period of rest after vagal stimulation its initial strength of contraction increases to a plateau by staircase effect strong vagal stimulation of heart can stop heart beat for few seconds
What is Overall effect of curare in an organism?
Curare is a plant-derived poison that blocks nicotinic acetylcholine receptors at the neuromuscular junction, leading to muscle relaxation and paralysis. This can result in impaired breathing and death if respiratory muscles are affected.
How does acetylcholine affect the cardiac cycle?
Acetylcholine slows down the heart rate by decreasing the rate of pacemaker cell firing in the sinoatrial node and reducing the conduction of electrical impulses through the atrioventricular node. This results in a decrease in heart rate and a decrease in the force of contraction in the heart muscle.
