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प्रश्न
Name the following:
The structure that holds the heart valves in position.
उत्तर
Pacemaker
संबंधित प्रश्न
Why is blood needed by all the parts of a body?
The nearest organ to which the heart supplies oxygenated blood is:
How do you account for the following difference?
The walls of the right ventricle are thicker than those of the right auricle.
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].
Why do we call saliva a digestive juice?
The endocrine glands produce chemical substances called ____
Analogy
Arteries : Carry blood from the heart:: _________ :carry blood to the heart.
______ is a granulocyte.
Identify the normal haemoglobin count in human females.
Ventricles have ______ walls when compared with those of auricles.
