Author Question: Which of the following statements is accurate regarding exogenous acetylcholine? 1. Acetylcholine ... (Read 98 times)

vicky

  • Hero Member
  • *****
  • Posts: 586
Which of the following statements is accurate regarding exogenous acetylcholine?
 
  1. Acetylcholine has almost no therapeutic effects because it is rapidly destroyed once given.
  2. Acetylcholine is broken down rapidly within the body, preventing it from producing adverse effects.
  3. Acetylcholine will cause the heart rate to increase and blood pressure to drop.
  4. When given in small amounts, acetylcholine will produce profound parasympathetic effects.

Question 2

The nurse knows that atropine (Atropair) increases heart rate by
 
  1. blocking the beta receptors of the parasympathetic nervous system.
  2. directly stimulating the sympathetic nervous system.
  3. potentiating the effects of acetylcholine on nicotinic receptors.
  4. Blocking the effects of acetylcholine by occupying muscarinic receptors.



JCABRERA33

  • Sr. Member
  • ****
  • Posts: 344
Answer to Question 1

Correct Answer: 1
Rationale: Exogenous acetylcholine is not generally administered, because it is rapidly destroyed by the body. It does produce many adverse effects. Acetylcholine can lower blood pressure, but it also lowers heart rate.

Answer to Question 2

Correct Answer: 4
Rationale: Atropine is a cholinergic-blocking agent that occupies muscarinic receptors. It is classified as an anticholinergic agent because it inhibits the effects of the parasympathetic nervous system, which induces the fight-or-flight responses of the sympathetic nervous system.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.

For a complete list of videos, visit our video library