Muscarinic Receptor Function

Question 1

Eye

Answer 1

• Miosis: Decreased pupil diameter vs contraction of iris sphincter muscle
• Focusing of the lens for near vision via contraction of the ciliary muscle

Question 2

Heart

Answer 2

-Decreased heart rate

Question 3

Lung

Answer 3

• Constriction of bronchi

- Promotion of secretions via glandular stimulation

Question 4

Bladder

Answer 4

-Enables urine secretion

Question 5

GI tract

Answer 5

• Salivation via stimulation of the salivary glands
• Increased gastric secretions
• Defecation via increased intestinal tone and motility

Question 6

Sweat glands

Answer 6

• Generalized sweating

- This is accomplished by the SNS, not the PRNS

Question 7

Sex organs

Answer 7

-Erection