how many blood vessels lead to the heart?

Question

a) 3
b) 2
c) 1
d) 4

Answer 1

The answer two (2).

The Pulmonary vein comes to the heart from the lungs.
The vena cava comes to the heart from everywhere else.

Answer 2

4

Answer 3

3

Answer 4

Strictly speaking, all the veins lead to the heart. However, there are three (answer a) that directly enter the heart. The superior and inferior vena cavae (plural form of vena cava) enter the right atrium, and the pulmonary vein enters the left atrium.
Most anatomy books actually indicate there are two pulmonary veins on each side (thus, four of them plus the vena cavae would make six, but since that's not one of the answers possible, I would guess your teacher thinks they join together befoe they enter the heart).

Answer 5

The correct answer is ALL of them, but the question is really asking about the vessels (return paths) going directly into the heart, I guess. Can you name any more than the Vena Cava, and the Pulmanary? I would call it 5 - one from the body to the left Vent, out of the left Vent to the lungs, and 4 back from the lungs. So the answer depends on what "to" the heart means. And where is the heart boundry. I suspose the answer is 2 - the vein from the body, and then the vein back from the lungs (4 get combined into one, I guess).

http://en.wikipedia.org/wiki/Superior_vena_cava

Ron.

Answer 6

Well let's see!

Into the Right Atrium:
- Inferior Vena Cava - from lower body
- Superior Vena Cava - from upper body/head
- Sinus Venosus - from coronary veins

Into the Left Atrium:
- Right Pulmonary Veins (n = 2)
- Left Pulmonary Veins (n = 2)

Nothing leads "into" the ventricles from outside of the heart, so add up the above... and I count seven (7).

Since that's not one of your choices, you'll have to fall back on what you were taught in class. After all, your teacher is after the answer that they gave you, not necessarily the right answer.

Answer 7

The answer could be two, three, or four (a, b, or d) because their are two pulmonary veins that connect almost at the heart and flow into the left atrium, and there is a superior and inferior vena cava that flow into the right atrium, so it depends on what you mean but my answer is 3 (one pulmonary vein and the two vena cavas)

Answer 8

a) 3
-The vena cava transport deoxgenated blood from body to heart
- Pulmonary vein transport oxygenated blood from lungs to blood
- coronary arteries transport oxygen, glucose to heart muscles .

Answer 9

should be 3: the inferior vena cava, the superior vena cava, and the pulmonary vein

Answer 10

Wouldn't half of them lead to the heart and the other half away?