Which of these receptors is innervated by the sympathetic nervous system? A) muscarinic B) β2 C) α D) β1
Understand the Problem
The question is asking which type of receptor is innervated by the sympathetic nervous system, providing options that include different types of receptors. To solve this, we will identify the receptors associated with the sympathetic nervous system and select the correct option.
Answer
β2, α, and β1 receptors are innervated by the sympathetic nervous system.
The receptors innervated by the sympathetic nervous system include β1, β2, and α receptors.
Answer for screen readers
The receptors innervated by the sympathetic nervous system include β1, β2, and α receptors.
More Information
Adrenergic receptors, which include β1, β2, and α, are part of the sympathetic nervous system, which uses norepinephrine and epinephrine to activate a fight-or-flight response. Muscarinic receptors are primarily part of the parasympathetic nervous system.
Tips
Muscarinic receptors are often confused as they can also be stimulated by sympathetic nerves in sweat glands through special pathways.
Sources
- Physiology, Muscarinic Receptor - StatPearls - NCBI Bookshelf - ncbi.nlm.nih.gov
- Receptors and the autonomic nervous system - EMS1 - ems1.com
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