Which adrenergic receptors are primarily responsible for the constriction of coronary arteries?
Understand the Problem
The question is asking about the specific adrenergic receptors that cause the constriction of coronary arteries. The focus is on identifying which of the given options includes the correct receptor types associated with this physiological response.
Answer
α1 adrenergic receptors
The adrenergic receptors primarily responsible for the constriction of coronary arteries are α1 adrenergic receptors.
Answer for screen readers
The adrenergic receptors primarily responsible for the constriction of coronary arteries are α1 adrenergic receptors.
More Information
α1 adrenergic receptors are part of the sympathetic nervous system and are mainly located in the smooth muscle of blood vessels. Their activation causes vasoconstriction, which increases blood pressure by reducing the diameter of the blood vessels.
Tips
A common mistake is assuming that beta adrenergic receptors are responsible for constriction, whereas they more often mediate dilation.
Sources
- Alpha Adrenergic Receptor - an overview | ScienceDirect Topics - sciencedirect.com
- Functional alpha-1B adrenergic receptors on human epicardial ... - link.springer.com
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