Cardiology Vascular System 1a Questions and Answers (100% Correct Answers) Already Graded A+

Cardiology Vascular System 1a Questions and
Answers (100% Correct Answers) Already
Graded A+
Distribution of Blood in Circulatory System at Rest [ Ans: ]
systemic veins 60-70%

systemic arteries 10-12%

capillaries 4-5%

lungs 10-12%

heart 8-11%

2 mmHg [ Ans: ] average pressure in veins

100 mmHg [ Ans: ] average pressure in arteries

Skeletal muscle [ Ans: ] accessory system to veins that
allow blood to be returned to heart

Skeletal Muscle Pump [ Ans: ] contraction of skeletal
muscles sends veinous blood back to heart

venous valves [ Ans: ] ensure one-way flow of blood back
to the heart

Harvey [ Ans: ] demonstrated the one way flow of blood
back to the heart through venous valves using a
tourniquet

, 40 billion [ Ans: ] number of capillaries in the body

1 minute [ Ans: ] amount of time it takes for blood to
travel around the entire body

60,000 miles or 2.5 times around earth [ Ans: ] distance
blood vessels would stretch if they were laid end to end

vasodilation [ Ans: ] increases flow of blood to capillary
bed

vasoconstriction [ Ans: ] decreases flow of blood to
capillary bed

capillaries [ Ans: ] wall is one cell thick, lacks connective
tissue and smooth muscle to allow easier exchange of
materials

Layers of Blood Vessels [ Ans: ] tunica externa

tunica media

tunica interna

Layers of Tunica Interna in Artery [ Ans: ] 1) endothelium

2) elastic layer

blood flow [ Ans: ] driving forces / resistance

Poiseuille [ Ans: ] determined resistance depends on three
factors