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Chapter 12 Intro
Objectives
15
Physiology
Undergraduate 2
03/06/2011

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Term
Formed element
Definition
Solid phase of blood (includes erythocytes, leukocytes, and platelets)
Term
Plasma
Definition
Liquid portion of blood and component of extracellular fluid
Term
Hematocrit
Definition
Percentage of total blood volume occupied by blood cells.
Term
What formula relates pressure, flow, and resistance?
Definition
F=(Delta)P/R
Term
What are arteries?
Definition
Thick walled elastic vessel that carries blood away from the heart to arterioles.
Term
What are veins?
Definition
Any vessel that returns blood to heart.
Term
What are the two circulations in the body?
Definition
Systemic (blood to body) and pulmonary (blood to lungs)
Term
How does the blood flowing through the arteries differ in oxygen content in the two circulations?
Definition
Arteries bring oxygenated blood in systemic and deoxygenated blood in pulmonary.
Term
How does the blood flowing through the arteries differ in pressure in the two circulations?
Definition
Pressure is significantly higher in systemic than pulmonary.
Term
How does the blood flowing through the arteries differ in volume in the two circulations?
Definition
No difference. Volume is the same.
Term
How does the blood flowing through the arteries differ in destination in the two circulations?
Definition
Systemic is to the body and pulmonary is to the lungs.
Term
What are the two great vessels bringing blood into the heart?
Definition
Superior and inferior vena cava.
Term
What are the two great vessels taking blood away from the heart?
Definition
Aorta and pulmonary artery.
Term
What structure exerts the single most important influence on resistance to blood flow?
Definition
Tube's radius
Term
Trace the flow of blood through the heart
Definition
Right atrium-right ventricle-pulmonary trunk-lungs-left atrium-left ventricle-aorta-body-vena cava- back to right atrium
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