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Select your answer:
A  B  C  D  E 

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Topics:

Skeletal Tissue Body Systems & Anatomical Terms Viruses Biomolecules Neuroanatomy of CNS EKG Medical Term Hemodynamics Excretory and Musculoskeletal System Restrictive Respiratory Disorders Nervous & Endocrine Systems Understanding Psychology Nervous System Asexual/Sexual Reproduction Hospice Basics Human Body Systems Hospital Unit Skeletal System

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Other quiz: Respiration, Immune System, Blood Cells

Why do arteries have a thick muscle layer?

A. To provide energy for the blood vessel.

B. To prevent the blood flowing backwards.

C. To help withstand the high pressure blood, also to contract to control blood flow.

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