The Circulatory System Flashcards
what type of circulatory system do mammals have
a closed double circulatory system
what does a closed system mean
the blood remains within the blood vessels
what does. double circulatory system mean
the blood passes through the heart twice as part of two different circuits
- one delivers blood to the lungs
- one delivers blood to the rest of the body
why do mammals need a double circulatory system
to manage the pressure of blood flow
at what type of pressure is blood delivered to the lungs in a DSC and why
at a lower pressure
- low pressure = no damage to the capillaries and alveoli surrounding them
- low pressure = slower flow which allows for more time for gas exchange
at what pressure does the rest of the body receive blood and why
at a higher pressure
- so all respiring cells receive oxygen for aeriobic respiration
what are coronary arteries
the arteries that supply the cardiac muscle with oxygen enabling the constant contraction of the muscle
what are the main blood vessels linked to the heart
vena cava
pulmonary vein
pulmonary artery
aorta
what are the main blood vessels linked to the lungs
pulmonary veins and artery
what are the main blood vessels linked to the kidneys
renal artery and vein
