Autonomic nervous system mnemonic

Receptors that couple to Gq protein

The mnemonic

HAV1 M&M

What each word stands for

  • HHistamine H1
  • AAlpha-1 adrenergic
  • V1Vasopressin V1
  • MMuscarinic M1
  • MMuscarinic M3

Why it matters clinically

Gq raises IP3 and calcium, explaining vasoconstriction and smooth muscle contraction.

Where it stops being reliable

Covers only Gq; Gs and Gi receptors need separate recall.

Teaching aid, still awaiting independent review. Confirm facts in a standard source.

More mnemonics

Common questions

What is the Autonomic nervous system mnemonic?

HAV1 M&M. It helps you recall: Receptors that couple to Gq protein.

What does "H" stand for?

Histamine H1

What does "A" stand for?

Alpha-1 adrenergic

What does "V1" stand for?

Vasopressin V1

What are all the parts of the HAV1 M&M mnemonic?

H: Histamine H1; A: Alpha-1 adrenergic; V1: Vasopressin V1; M: Muscarinic M1; M: Muscarinic M3.

Which topic does this mnemonic belong to?

It belongs to Autonomic nervous system in Pharmacology.

Where does this mnemonic stop being reliable?

Covers only Gq; Gs and Gi receptors need separate recall.

How is this useful clinically?

Gq raises IP3 and calcium, explaining vasoconstriction and smooth muscle contraction.

How do I make this mnemonic stick?

Say it aloud, write it from memory tomorrow, then again in a week. Then test yourself on a Pharmacology question about Autonomic nervous system.

Is this a standard mnemonic?

It is a teaching aid written or adapted by our team. Some resemble ones students share informally. Check any fact that matters in a standard source.