Sympathetic And Parasympathetic Responses And Corresponding Receptors The Eye

Question 1

Iris radial smooth muscle (sympathetic response and receptor)

Answer 1

Contraction resulting in pupil dilation (mydriasis) (Receptor alpha-1)

Question 2

Iris radial smooth muscle (Parasympathetic effect)

Answer 2

None

Question 3

Iris sphincter (Circular) smooth muscle (sympathetic effect)

Answer 3

None

Question 4

Iris Sphincter (Circular) smooth muscle (parasympathetic effect) and receptor

Answer 4

Contraction resulting in pupil constriction (miosis) (Receptor M3,M2)

Question 5

Ciliary smooth muscle sympathetic effect and receptor

Answer 5

Relaxation to accommodate for for vision (receptor beta-2)

Question 6

Ciliary smooth muscle parasympathetic effect and receptor

Answer 6

Contraction to accommodate for near vision receptor M3,M2

Question 7

Lacrimal (Tear) Glands sympathetic effect and receptor

Answer 7

Limited tears secretion (+) receptor alpha

Question 8

Lacrimal (tear) glands. Parasympathetic effect and receptor

Answer 8

Intense tier secretion (+ + +) receptors M3,M2