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प्रश्न
What is the liquid part of the blood called? What is the function of platelets in the blood?
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उत्तर
The liquid part of the blood is called plasma. The main function of the platelets is to prevent bleeding. They contain essential chemicals that help in the coagulation of blood.
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संबंधित प्रश्न
Explain with tile help of a chart, explain the compatibility of human blood groups.
Explain ABO blood group system in human being with a suitable chart.
Haemoglobin is present in ______ cells.
Why is blood needed by all the parts of a body?
Explain Pulse
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?
Why is it necessary to know the blood groups before giving transfusion?
Differentiate between members of the following pairs with reference to the aspect asked within bracket:
artery and vein (type of blood primarily flowing through)
what is Venule?
Given diagram shows a simple diagram of the circulation of blood in a mamma showing the
main blood vessels, the heart, lungs and body tissues. The blood vessel, labelled 6, contains
deoxygenated blood and the valve leading to it has three semi-lunar pockets.
(a) Name the blood vessels and organs marked by numbers 1 to 8.
(b) What is meant by the term ‘double circulation’ of blood in mammals?
(c) what is diastole?
[There is an “error” in the diagram. According to the usual practice the pulmonary (lung)
circulation is shown upward and the systemic downward, but here it is reversed].
Draw a neat and labelled diagram.
Internal structure of the heart.
Fill in the blanks with suitable words given below:
The carbon dioxide loaded blood from right ventricle is pumped into the lungs through ______.
Fill in the blank:
In human body, heart is located on the _____ side of the chest cavity.
True or false:
People with blood group ‘O’ are called universal recipients
Why is a person having blood group AB called universal recipient and a person with blood group O called a universal donor?
Veins have valves at intervals in their inner lining whereas the arteries do not have valves. Explain.
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.
Blood is produced in the bone marrow.
Serum differs from blood in lacking ____________.
The heart is covered by ______.
