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प्रश्न
State the functions of blood in our body.
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उत्तर
Following are the functions of blood:
- It transports oxygen from the lungs to the cells.
- It carries carbon dioxide, a waste product, from the body cells to the lungs.
- It fights diseases and infections.
- It regulates the body temperature.
- It carries hormones to different organs of the body.
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संबंधित प्रश्न
Give biological reasons for the following statements:
The left ventricle of the heart has a thicker wall than the right ventricle.
Differentiate between LUBB and DUP (names of the valves whose closure produce the sound)
Give appropriate biological or technical terms for the following
The relaxation phase of the heart.
Production of RBCs occurs in ______.
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?
Multiple choice questions. Tick ( ✓ ) the correct choice:
The four blood groups in humans are
True or false:
People with blood group ‘O’ are called universal recipients
Define the Circulatory system.
Describe, in brief, the circulatory system in human beings.
Draw the structure of human heart and label its parts
What are seen as greenish blue lines in our hands and legs?
Differentiate between:
Red blood cells and White blood cells
Given below is a schematic representation of the circulatory system in man. Study the same and answer the questions that follow:
(i) Label the parts 1 to 4 indicated in the diagram.
(ii) Give one difference between parts 1 and 2 based on:
(a) their structure
(b) the nature of blood flowing through them.
(iii) What is the specific name of the type of blood circulation that takes place between the heart and the lungs?
(iv) Name the valve found at the beginning of the part labeled 3.
Short answer question.
Write a note on blood plasma.
The stomach is like a ______.
Why do we call saliva a digestive juice?
Which of the following is the main site of erythropoiesis in adults?
Hematocrit is ______.
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?
