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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

When the systemic blood pressure increases, the aortic and carotid sinus baroreceptors initiate reflexes that cause a/an

1. Increased heart rate

2. Decreased ventilatory rate

3. Increased ventilatory rate

4. Decreased heart rate

A. 1 only

B. 2 only

C. 3 only

D. 2 and 4 only

Summary Introduction

Introduction:

There are certain areas in the body which send signals to the medullary respiratory centers to allow the activation of the ventilatory pattern. The major areas are the peripheral chemoreceptors and central chemoreceptors. There are certain other factors that influence the depth and rate of breathing. One such factor is aortic and carotid sinus baroreceptors.

Explanation

Justification for the correct answer:

Option (D) is, ‘2 and 4 only.’ This option is correct, as in response to increased systemic blood pressure, the aortic and carotid sinus baroreceptors initiate reflexes that result in decreased ventilator and heart rates. These baroreceptors are present near the aortic and carotid peripheral chemoreceptors. Hence, option (D) is the correct answer.

Justification for the incorrect answers:

Option (A) is, ‘1 only...

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