Concept explainers
To discuss:
The relationship of the arterioles to metarterioles and capillaries, and the function of the precapillary sphincters of a metarteriole.
Introduction:
Arteries are the resistance vessels that give oxygenated blood to the organs. Arteries are known for their strong and resilient tissues that can withstand the pressure created by the heart. They are more muscular in nature than veins and are able to maintain their round shape even when the vessels are empty. There are three types of arteries based on their size. They are conducting arteries, distributing arteries, and resistance arteries.
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Chapter 20 Solutions
LSC (CONCORDIA UNIV ST PAUL) BIO 315/316: B&N DPF Connect with APR and Phils Online Access for Anatomy and Physiology: The Unity of Form and Function 180 Day Access ENTRP
- Histological descriptions of the different types of capillaries, arteries and vein.arrow_forwardWhy arterial flow is pulsatile but capillaryand venous flow are notarrow_forwardHow portal systems and anastomoses differfrom simpler routes of blood flow; types ofanastomoses and their purposesarrow_forward
- The mathematical relationship between peripheral resistance and vessel radius; why this is related to the laminar flow of blood; and why it makes vasoreflexes such a powerful influence on blood flowarrow_forwardHistological description of the different types of blood vessels.arrow_forwardDifference between arteries and veins and how it functions in the circulatory circuit.arrow_forward
- What capillaries and postcapillary venules have in common with respect to fluid exchangearrow_forwardHow vasomotion can change systemwideblood pressure or redirect blood flow fromone region to another; circumstances thatcall for redirection of blood flowarrow_forwardWhich vessels contribute most to altered systemic blood pressure when their smooth muscles contract or dilate,large muscular arteries,small muscular arteries,or arteriolesarrow_forward
- Definitions of arteries, veins, and capillarieswith respect to the path of blood flowarrow_forwardWhy blood velocity declines from aorta tocapillaries and rises again from capillariesto veins, but never rises as high in veins as itwas in the aortaarrow_forwardHow blood flow is related to resistance andpressure differences; the mathematical expression of these relationshipsarrow_forward