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Postganglionic neurons of the sympathetic nervous system can be characterized as having which of the following receptor type?A. Muscarinic acetylcholine receptorsB. Nicotinic acetylcholine receptorsC. Adrenergic receptors

Sagot :

The receptor type is Adrenergic Receptors. As mentioned, neurons that produce and release the neurotransmitter NE are known as adrenergic neurons.

NE is secreted by postganglionic neurons of the sympathetic nervous system and binds to adrenergic receptors expressed on effector cells. Postganglionic neurons of the sympathetic nervous system use adrenergic receptors to respond to signals from the central nervous system. These receptors are activated by either epinephrine (adrenaline) or norepinephrine (noradrenaline) hormones. The hormones are released from the adrenal medulla and activate the postganglionic neurons to initiate the fight-or-flight response. The adrenergic receptors are divided into two major groups, alpha and beta. Alpha receptors are responsible for constriction of the blood vessels, bronchi, and other organs, while beta receptors are responsible for increased heart rate and contraction of the skeletal muscles.

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