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Cardiopulmonary Anatomy & Physiolo...

7th Edition
Des Jardins + 1 other
ISBN: 9781337794909

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Chapter
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BuyFindarrow_forward

Cardiopulmonary Anatomy & Physiolo...

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

Stimulation of the peripheral chemoreceptors can cause which of the following?

1. Tachycardia

2. Decreased left ventricular performance

3. Increased pulmonary vascular resistance

4. Systemic arterial hypertension

A. 1 only

B. 2 only

C. 4 only

D. 1, 3, and 4 only

Summary Introduction

Introduction:

Peripheral chemoreceptors are oxygen sensitive cells that respond to the decreased levels of oxygen in the arterial blood. They are located at the bifurcation of the external and internal carotid arteries. The peripheral chemoreceptors are also known as carotid and aortic bodies. Once activated, the peripheral chemoreceptors cause increased ventilation.

Explanation

Justification for the correct answer:

Option (D) is, ‘1, 3, and 4 only.’ This option is correct as the peripheral chemoreceptors, upon activation, lead to increased ventilation. There are other responses, too, as a result of the stimulation of peripheral chemoreceptors. Such responses are peripheral vasoconstriction, increased pulmonary vascular resistance, systemic arterial hypertension, tachycardia, and increase in left ventricular performance. Hence, option (D) is the correct answer.

Justification for the incorrect answers:

Option (A) is, ‘tachycardia...

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