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Cardiopulmonary Anatomy & Physiolo...

7th Edition
Des Jardins + 1 other
ISBN: 9781337794909

Solutions

Chapter
Section
BuyFindarrow_forward

Cardiopulmonary Anatomy & Physiolo...

7th Edition
Des Jardins + 1 other
ISBN: 9781337794909
Textbook Problem

Which of the following is (are) released when the parasympathetic nerve fibers are stimulated?

1. Norepinephrine

2. Atropine

3. Epinephrine

4. Acetylcholine

A. 2 only

B. 4 only

C. 1 and 3 only

D. 1, 2, and 3 only

Summary Introduction

Introduction:

ANS stands for Autonomic Nervous System, widely known to be the section of the nervous system that stimulates many important functions in the body, including the working of the cardiac muscle, glands, and smooth muscles. This region of the nervous system is segregated into two divisions, namely, parasympathetic and sympathetic.

Explanation

Explanation for the correct answer:

Option (b) is given as 4 only. Parasympathetic nervous system is responsible for lowering the heart rate, contracting the bronchial smooth muscles, and then it elevates the intestinal peristalsis as well as the activity of the gland. When this division is stimulated, the neural transmitter called acetylcholine is produced, which leads to the contraction of the bronchial smooth muscle. Hence, option (b) is a correct answer

Explanation for the incorrect answer:

Option (a) is given as 2 only...

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