Question

b) bradycardia
c) tachycardia
d) arrhythmia
question 6 (2 points)
the blood vessels that bring deoxygenated blood back to the heart are called the -----
a) vena cava
b) pulmonary veins
c) pulmonary arteries
d) aorta

Explanation:

For Question 6, the vena cava brings deoxygenated blood back to the heart. Pulmonary veins carry oxygen - rich blood to the heart, pulmonary arteries carry deoxygenated blood from the heart to the lungs, and the aorta is the main artery carrying oxygen - rich blood from the heart to the rest of the body.

Answer:

Question 6: A. vena cava