Put a tick mark (✓) against the correct alternative in the following statement:
Blood Capillary is a
- Broad tube
- Artery with thick wall
- Vein with large lumen
- Narrow tube made up of endothelium only.
Fill in the blank with suitable word given below:
The liquid part of coagulated blood is known as____________.
You can see some blood vessels on the outside of the hands specially in older people. Are those veins or arteries ? How can you confirm your answer ?