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Introduction to the Cardiovascular (Circulatory) System
Description of the cardiovascular system
28
Anatomy
Undergraduate 1
02/02/2016

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Cards

Term
what are the 3 major components of the cardiovascular (circulatory) system
Definition
1) heart
2) blood vessels
3) blood
Term
what is the major function of the cardiovascular (circulatory) system?
Definition
transportation
nutrients and oxygen
waste products like carbon dioxide
hormones
Term
which atrium and ventricle are in the systematic circuit?
Definition
left atrium and ventricle
Term
receives oxygenated blood coming back from lungs
Definition
left atrium
Term
discharges oxygenated blood into systematic circuit (to all cells in the body)
Definition
left ventricle
Term
which atrium and ventricle are in the pulmonary circuit?
Definition
right atrium and ventricle
Term
receives deoxygenated blood
Definition
right atrium
Term
discharges deoxygenated blood into the pulmonary circuit-- to lungs then drops off carbon dioxide then goes to left atrium
Definition
right ventricle
Term
what are the 3 major types of blood vessels?
Definition
1) arteries
2) capillaries
3) veins
Term
carries blood away from heart; carries oxygenated blood in systematic circulation; carrier deoxygenated blood in the pulmonary circulation
Definition
arteries
Term
the smallest of the blood vessels
Definition
capillaries
Term
the main role of this blood vessel is to allow the exchange of materials between blood and body tissues
Definition
capillaries
Term
this blood vessel carriers blood TOWARDS the heart; carriers deoxygenated blood in the systematic circulation; carries oxygenated blood in the pulmonary circulation;
Definition
vein
Term
what is the smallest vein?
Definition
venule
Term
what are the 3 types of arteries
Definition
1) elastic or conducting arteries
2) muscular or distributing arteries
3) arterioles
Term
largest diameter arteries (greater than 1 cm); walls contain large amounts of elastic fibers; allows arteries to expand and recoil; important vessels in helping propel blood onward while ventricles are relaxing;
Definition
elastic or conducting arteries
Term
function as pressure reserve
Definition
elastic fibers
Term
medium-sized arteries (0.1mm to 10mm) walls contain large amounts of smooth muscle
Definition
muscular or distributing arteries
Term
important in regulating the blood flow to specific body regions; smooth muscle cells in CIRCULAR orientation and are responsible for vasoconstriction (ex. reduction in lumen diameter) and vasodilation (ex. increase in lumen diameter)
Definition
muscular or distributing arteries
Term
smallest arteries
Definition
arterioles
Term
connects arterioles to venules
Definition
capillaries
Term
known as exchange vessels
Definition
capillaries
Term
sites of exchange of nutrients and waste products between blood and tissue cells
Definition
capillaries
Term
our red blood cells are 7.8 micrometers in diameter, so they have to fold up to get inside capillary beds because they are 4 to 10 micrometers
Definition
Term
what are the two types of veins?
Definition
1) venules
2) veins
Term
formed when several capillaries unite; 10 micrometers to 100 micrometers in diameter
Definition
venules
Term
formed when several larger venules unite; 0.1mm to greater than 1mm in diameter
Definition
veins
Term
all veins in the limbs have this to prevent the backflow of blood when the ventricle relaxes; created by cusps of the vessel wall
Definition
valves
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