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The Circulatory System
Rewrite and complete the following sentences by inserting the correct word
in the space indicated:
Oxygen combines with haemoglobin present in RBC and forms Oxyhaemoglobin.
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Choose the correct answer from the four options given below:
Pulse wave is mainly caused by the
Differentiate between the following pairs on the basis of what is mentioned within brackets:
Bicuspid valve and Tricuspid valve (function)
The diagram given below represents the human heart in one phase of its functional activities. Study the same and answer the questions which follow:
(i) Name the phase.
(ii) Label the parts 1, 2 and 3.
(iii) Which part of the heart is contracting in this phase? Give a reason to support your answer.
(iv)Draw a well-labeled diagram of part 1 and 2 to show the structural differences between them.
Name the following:
iii. The vein that carries oxygenated blood.
Rewrite and complete the following sentences by inserting the correct word
in the space indicated:
Give the biological/technical terms for the following:
ix. The sound produced when the atrio-ventricular valves close in the heart.
The diagrams given below are cross sections of blood vessels:
i. Identify the blood vessels A, B and C.
ii. Name the parts labelled 1 to 3.
iii. Name the type of blood that flows through A.
iv. Mention one structural difference between A and B.
v. In which of the above vessels does exchange of gases actually take place?
Differentiate between the following pairs on the basis of what is mentioned
within brackets:
ii. RBC and WBC (Shape)
The diagram below represents the human heart in one phase of its function.
Study the diagram carefully and answer the questions that follow:
i. Name the phase.
ii. Which part of the heart is contracting in this phase? Give a reason to support your answer.
iii. Name the parts labelled 1 to 4.
iv. What type of blood flows through ‘2’?
v State the function of the part numbered ‘5’.
vi Name the membrane that covers the heart.
Explain the following terms:
v. Pulse
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