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प्रश्न
Match the following.
| Group A | Group B |
| (1) Lungs | (a) Circulation |
| (2) Stomach | (b) Respiration |
| (3) Heart | (c) Co-ordination |
| (4) Brain | (d) Digestion |
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उत्तर
| Group A | Group B |
| (1) Lungs | (b) Respiration |
| (2) Stomach | (d) Digestion |
| (3) Heart | (a) Circulation |
| (4) Brain | (c) Co-ordination |
संबंधित प्रश्न
Give appropriate biological or technical terms for the following :
The complex consisting of a DNA strand and a core of histones
Name the following:
The smallest common blood vessels formed by the union of capillaries.
Match the items in Column ‘A’ with those in column ‘B’ Rewrite the correct matching pairs.
| Column A | Column B | ||
| (a) | SA Node | (i) | Plasma |
| (b) | Defective haemoglobin in RBC | (ii) | Serum |
| (c) | Muscle fibres located in heart | (iii) | Pacemaker |
| (d) | The liquid squeezed out of blood during clotting | (iv) | Sickle cell anaemia |
| (e) | Never tires, keep on contracting and relaxing | (v) | Purkinje fibres |
| (f) | Cardiac cycle | (vi) | Cardiac muscle |
| (g) | Liquid part of the blood without corpuscles | (vii) | 0·85 sec |
Fill in the blanks with suitable words given below:
The oxygen-rich blood is pumped into different parts of the body through ______.
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 types 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?
- Which chamber of the heart receives oxygenated blood from the lungs?
Veins have valves at intervals in their inner lining whereas the arteries do not have valves. Explain.
Thin tube-like structures which are the component of circulatory system are called blood vessels.
In a closed circulatory system, blood is completely enclosed within:
Given below are four statements regarding human blood circulatory system:-
- Arteries are thick walled and have narrow lumen as compared to veins.
- Angina is acute chest pain when the blood circulation to the brain is reduced.
- Persons with blood group AB can donate blood to any person with any blood group under ABO system.
- Calcium ions play a very important role in blood clotting.
Which two of the above statements are correct?
Name the following:
The structure that holds the heart valves in position.
