Answered: Which of the following intrinsic…

Which of the following intrinsic factors would cause vasodilation of arterioles? A) vasodilagen B) decreased pH C) increased CO2 D) decreased K+ E) increased O2

Basic Clinical Laboratory Techniques 6E

6th Edition

ISBN:9781133893943

Author:ESTRIDGE

Publisher:ESTRIDGE

Chapter1: The Clinical Laboratory

Section1.12: Routine Venipuncture

Problem 12RQ

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Concept explainers

Hematology

Hematology is the branch of biology. Hematology is the medical field that deals with the treatment of blood disorders and cancers, such as hemophilia, leukemia, lymphoma, and sickle-cell anemia. Hematologists and hematopathologists are medical professionals who specialize in illnesses of the blood and its components.

Question

Please help in answering this question - more than one answer may be correct:

Which of the following intrinsic factors would cause vasodilation of arterioles?

A) vasodilagen

B) decreased pH

C) increased CO2

D) decreased K+

E) increased O2

Expert Solution

Introduction

Arteries carry oxygenated blood from heart to all other tissues and organs. Arterioles are small branches from arteries that carry the oxygenated blood to the capillary bed which is a place in capillaries where the exchange occurs.
Arterioles are made of three layers namely intima, media and adventitia. Smooth muscles made up the media layer.
The smooth muscle has neurons through which it receives neuro signal to contract or expand the arteriole size. This helps in maintaining blood pressure.
Vasodilation means increasing in the diameter (widening) of arteriole which is due to the relaxation of smooth muscle cells. This increases the blood flow and decreases blood pressure. The factors responsible for it may be intrinsic (endogenous) or extrinsic (exogenous).

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