Chapter 8

Which property is characteristic of the sympathetic nervous system? (A) discrete activation of specific organs (B) long preganglionic neurons (C) action terminated by cholinesterase (D) inhibits the enteric nervous system (E) activated by increased arterial blood pressure

A man is given a drug that inhibits the synthesis of norepinephrine. Which response would result from this treatment? (A) diarrhea (B) bronchodilation (C) renin secretion (D) decreased heart rate (E) salivation

A man with diabetic autonomic neuropathy complains of dizziness and fainting when arising from bed in the morning. Which drug would be most beneficial to this patient? (A) dobutamine (B) albuterol (C) midodrine (D) clonidine (E) isoproterenol

A woman is given topical ocular apraclonidine after cataract surgery. Which mechanism is responsible for the desired effect? (A) inhibition of adenylyl cyclase (B) activation of adenylyl cyclase (C) activation of phospholipase C (D) inhibition of phospholipase C (E) release of calcium from the sarcoplasmic reticulum

A child with asthma is being treated with albuterol to prevent bronchospasm. Which side effect is typically associated with this drug? (A) sedation (B) rapid heart rate (C) muscle weakness (D) low blood pressure (E) blurred vision

After being stung by a bee, a child is given an intramuscular injection of epinephrine. Which action would lead to bronchodilation? (A) increased cAMP levels (B) increased cyclic guanosine monophosphate (cGMP) levels (C) increased IP3 levels (D) calcium influx (E) sequestration of calcium