Question

Which one of these statements is true regarding blood circulation?

a.

For health and survival, it's critical for blood circulation to be ongoing and uninterrupted.

b.

Normally, blood circulates in a repeating stop-start rhythm.

c.

The heart deoxygenates blood that's returned to it.

d.

Taking in large quantities of oxygen makes the circulatory system les efficient.

Answer 1

It is A!

Step-by-step explanation:

For health and survival, it's critical for blood circulation to be ongoing and uninterrupted.