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प्रश्न
The chief function of lymph nodes is to
विकल्प
produce WBCs
produce hormones
destroy old RBCs
destroy pathogens
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उत्तर
destroy pathogens
संबंधित प्रश्न
Differentiate between LUBB and DUP (names of the valves whose closure produce the sound)
The diagram below represents the simplified pathway of the circulation of blood. Study the same and answer the questions which follow:
(i) Name the blood vessels labelled 1 and 2.
(ii) State the function of blood vessels labelled 5 and 8.
(iii) What is the importance of the blood vessel labelled 6?
(iv) Which blood vessel will contain a high amount of glucose and amino acids after a meal?
(v) Draw a diagram of the different blood cells as seen in a smear of human blood.
What is the liquid part of the blood called? What is the function of platelets in the blood?
What is diastole?
Given below is a highly schematic diagram of the human blood circulatory system.
Which numbers represent the following respectively?
Aorta
Hepatic portal vein
Pulmonary artery
Superior vena cava
Renal vein
Stomach
Fill in the blanks with suitable words given below:
The blood loaded with carbon dioxide from the body comes into the ______ of the heart.
True or false:
People with blood group ‘O’ are called universal recipients
The table below is designed to indicate the transport of certain substances in our body. Fill in the blanks with suitable answers.
| Substance | From | To | |
| 1. | ______ | Lungs | Whole Body |
| 2. | Carbon Dioxide | ______ | ______ |
| 3. | Urea | ______ | ______ |
| 4. | Digested Carbohydrates | Intestines | ______ |
| 5. | ______ | ______ | Target Organs |
| 6. | Heat | ______ | Whole Body |
Given below is the simplified pathway of the circulatory system:
(i) Name the blood vessels marked 1 to 8.
(ii) Name the chamber of the heart which:
(a) Receives blood from ‘1’.
(b) Pumps blood into blood vessel ‘8’.
(iii) Mention two structural differences between blood vessels ‘7’ and ‘2’.
Which component of the haemoglobin molecule combines with the oxygen molecule to form oxyhaemoglobin?
