First Aid USMLE

Question 1

G-protein–linked 2nd messengers

Sympathetic receptors

Answer 1

α1
α2
β1
β2

Question 2

G-protein–linked 2nd messengers

Sympathetic receptor α1

Answer 2

G-protein: q
Major Functions: Raises vascular smooth muscle contraction, Raises pupillary dilator muscle contraction (mydriasis),Raises intestinal and bladder sphincter muscle contraction

Question 3

G-protein–linked 2nd messengers

Sympathetic receptor α2

Answer 3

G-protein: i

Major Functions: 