Advertisements
Advertisements
Question
What are seen as greenish blue lines in our hands and legs?
Advertisements
Solution
Veins
APPEARS IN
RELATED QUESTIONS
Give technical terms for The protective covering of the heart
Given alongside is a diagram of human heart showing its internal structures. Label the parts marked 1 to 6, and answer the following questions.

- Which type of blood is carried by the blood vessel marked 2?
- Name the main artery which takes the blood from heart to different parts of the body?
- Which chamber of the heart receives deoxygenated blood from the body?
The table below is designed to indicate the transport of certain substance in our body. Fill in the
blanks with suitable answers.
| Substance | From | To |
| Lungs | Whole body | |
| Carbon dioxide | ||
| Urea | ||
| Digested carbohydrates |
Intestines | |
| Target organs |
How do you account for the following difference?
The walls of the right ventricle are thicker than those of the right auricle.
Explain with reasons.
Human blood is red coloured.
Explain the following:
Why is the closed circulatory system more efficient than the open system?
What is meant by the term 'double circulation' of blood in mammals? What is diastole?
Put a tick mark (✓) against the correct alternative in the following statement.
The blood tastes saltish due to the dissolved.
Differentiate between:
Arteries and Veins.
Which of the following is TRUE regarding closed circulatory system?
