double circulation

Question 1

what does it mean for humans to have a double circulation?

Answer 1

this means that blood passes through the heart twice in one single complete circuit

Question 2

what are the two circuits that comprise of the human circulatory system?

Answer 2

it consists of the pulmonary and the systemic circuit

Question 3

what does the pulmonary circuit do?

Answer 3

it allows deoxygenated blood to be pumped to the lungs.

Question 4

what does the systemic circuit do?

Answer 4

it allows oxygenated blood to be pumped from the heart to the rest of the body at a higher pressure

Question 5

why does blood have to enter out lungs at a lower pressure

Answer 5

this allows sufficient time for deoxygenated blood to be oxygenated when entering the lungs

Question 6

why is blood pumped in the systemic circuit at a higher pressure?

Answer 6

this ensures that oxygenated blood is quickly pumped to all parts of the body