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The Circulatory System

Question
ICSEENIBI10003464

State the function of the following:

Chordae tendineae

Solution

Chordae tendineae keeps the valves in position, preventing their upturning, due to pressure exerted by the contracting ventricles.

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Some More Questions From The Circulatory System Chapter

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:


Oxygen combines with haemoglobin present in RBC and forms ___________.

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

Name the following :

The mineral element essential for the clotting of blood.

State the main functions of the following:

Coronary artery