Answer:
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Explanation:
<h2>Cholinergic and Adrenergic neurons</h2>
Explanation:
The autonomic nervous system (ANS) is a dual innervations system which innervates internal organs of the body through the sympathetic and parasympathetic nervous system (PNS). Depending upon the neurotransmitter and receptor used, the ANS fibers are classified as cholinergic or adrenergic neurons.
The preganglionic neurons of the sympathetic and the preganglionic and postganglionic neurons of the parasympathetic nervous system release the neurotransmitter acetylcholine (ACH) and hence are called cholinergic neurons.
The postganglionic neurons of the sympathetic nervous system releases catecholamine like norepinephrine(NE) and hence called as adrenergic neurons.
The cholinergic neurons store ACH in the synaptic terminals. They are myelinated to aid in faster neurotransmission. The ACH neurotransmitter released from preganglionic neurons activates the two receptors – nicotinic ACH and muscarinic receptors on the postganglionic neurons
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The postganglionic neurons releasing NE binds to the adrenergic receptors – Alpha 1 and 2, Beta 1, 2, and 3.
Answer:
The neurotransmitters was released from axon termianl
Explanation:
neurotransmitters are released from the axon terminal when their vesicles "fuse" with membrane of the axon terminal, spilling the neurotransmitter into the synaptic cleft.
Answer:
The correct answer will be option B- enzymatic action of Acetylcholinesterase.
Explanation:
At the neuromuscular junction, the neurotransmitter acetylcholine is released which then binds to the receptor in motor-end plate causes depolarization of the membrane responsible for the release of Ca⁺² ions. These Ca⁺² ions control the contraction of the muscle by binding to troponin.
This mechanism of muscle contraction is blocked after the breakdown of the acetylcholine by the "enzyme acetylcholinesterase" which leads to the closure of the Na⁺ ion-channels. The closure of these channels slows down the depolarization in muscle fiber and thus blocks the pathway which leads to muscle relaxation.
Thus, Option-B is the correct option.
Answer:
The blood pressure is the measure of the strength by which the blood pushes against the side of the blood vessels when it circulates inside the body.
Explanation:
When heart beats, the heart pumps the blood around the body to supply energy/oxygen to the various parts of the body where it is needed.
<u>As the blood circulates, it pushes against sides of blood vessels. The strength of pushing of the blood is measured by blood pressure. Most of the pressure is due to the work done by the heart in pushing the blood.</u>
It is measure by using sphygmomanometer. Two numbers are used to measure the blood pressure.
<u>Systolic blood pressure is the first digit used for measuring blood pressure and it measures pressure in blood vessels when heart beats.
</u>
<u>Disystolic blood pressure is the second digit used for measuring blood pressure and it measures the pressure of blood in the vessels when heart is resting between beats.</u>
