Questions About Health?

Question 1
The blood entering the right atrium is low in oxygen because it has just returned to the heart after nourishing the body with needed oxygen.
A.True
B.False
Question 2
The heart muscle tissue has the most endurance of any muscular organ in the body.
A.True
B.False
Question 3
Systemic circulation requires help from which of the following?
A.bones
B.lungs
C.arteries and veins
D.muscles
Question 4
Pulmonary circulation is [...]

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