Question

Why an injection is administered in a vein and not an artery?

• A. Veins have valves and prevent backflow.
• B. Arteries have high pressure and puncture will lead to lot of blood loss.
• C. Veins carry oxygen-rich blood from all parts of the body to the heart
• D. Arteries carry carbon dioxide-rich blood to all parts of the body from the heart.

Answer 1

The correct option is B
Explanation of the correct option:

1. In veins blood flows in a relatively low pressure compared to oxygenated blood being pumped through arteries at a higher pressure.
2. So if the artery is punctured with a needle this will lead to a lot of blood loss.
3. So mainly injections are administered through the vein rather than an artery.

Explanation of the incorrect option:

Option A,C and D didnot satisfy the appropriate explanation of the given question.

Final answer: Because Arteries have high pressure and puncture will lead to lot of blood loss, an injection is administered in a vein not an artery.