Mass transport in animals Flashcards
which side of the heart pumps deoxygenated blood?
right side
which side of the heart pumps oxygenated blood?
left side
why is the closed double circulatory system important?
prevents mixing of oxygenated and deoxygenated blood (so blood pumped to body is fully saturated with oxygenated blood
what deliver oxygenated blood to cardiac muscle?
coronary arteries
what’s the role of the aorta?
carry oxygenated blood away from the heart to respiring tissue
what’s the role of the vena cava?
carry deoxygenated blood from respiring tissue to the heart
what’s the role of the pulmonary artery?
carries deoxygenated blood away from the heart to the lungs
what’s the role of the pulmonary vein?
carry oxygenated away from lungs, to the heart
whats the role of the atrioventricular valves?
prevent backflow of blood from ventricles into to atria
what’s the role of semilunar valves?
prevent backflow of blood of blood from arteries into ventricles
why does the left side of the heart have a thicker muscular wall?
generates blood at a high pressure
to push blood around the whole body
whats the role of arteries?
carries blood from the heart to the rest of the body at high pressure
what are arterioles?
arteries divide into smaller vessels which direct blood to capillaries
arterioles structure related to its function
thicker muscle layer
constricts blood flow by narrowing lumen
thinner elastic, lower prssure surges
what’s the role of veins?
carry blood back to the heart at a lower pressure
