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प्रश्न
Which organ acts as a pump in the circulatory system?
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उत्तर
In the circulatory system, the heart acts as a pump to push out blood.
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संबंधित प्रश्न
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?
Heart sounds are produced due to ______.
-
closure of tricuspid and bicuspid valves
-
rushing of blood through valves producing turbulence
-
closure of atrioventricular and semilunar valves
-
entry of blood into auricles
Name the following:
The kind of blood cells which can squeeze out through the walls of one category of blood vessels.
Name the following:
The blood vessels which start from capillaries and end in capillaries.
Name the following:
The fluid found between the membranes of the heart.
Given below is a certain structure, write its chief functional activity.
Erythrocytes - ______.
The valve which prevents back flow of blood in the veins and lymph vessels ______.
Why do people have a common belief that the heart is located on the left side of the chest?
What is diastole?
What is the function of spleen?
Give reason for the following:
Blood flowing away from the stomach and intestines is put into circulation via the liver and
not directly.
Give reason for the following:
Atrial wall is less muscular than the ventricular wall.
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].
Explain the difference.
Arteries and veins.
Cardiac muscles are ______.
Put a tick mark (✓) against the correct alternative in the following statement.
The only artery which carries deoxygenated blood is called,
Differentiate between the following pair of terms: Vena Cava and Aorta
The artificial method of filtering the blood or removing the wastes from the blood.
______ WBCs are present per mm3 of blood.
