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Questions
Define the Circulatory system.
Define the following term:
Circulatory system
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Solution
The circulatory system is a transport system moving substances throughout our body with the help of blood.
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RELATED QUESTIONS
The diagram given below represents a section of the human heart. Answer the questions that follow :
(i) Which parts of heart are in the diastolic phase? Give a reason to support your answer.
(ii) Label the parts numbered 1 and 2 in the diagram. What type of blood flows through them?
(iii) What causes the heart sounds ‘LUBB’ and ‘DUP’?
(iv) Name the blood vessels that supply oxygenated blood to the heart muscles.
(v) Draw neat labelled diagrams of a cross section of an artery and a vein.
Differentiate between LUBB and DUP (names of the valves whose closure produce the sound)
The vein that carries oxygenated blood.
State the functions of blood in our body.
Draw the structure of a human heart and label its parts.
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 fluid found between the membranes of the heart.
Match the items in Column ‘A’ with those in column ‘B’ Rewrite the correct matching pairs.
| Column A | Column B | ||
| (a) | SA Node | (i) | Plasma |
| (b) | Defective haemoglobin in RBC | (ii) | Serum |
| (c) | Muscle fibres located in heart | (iii) | Pacemaker |
| (d) | The liquid squeezed out of blood during clotting | (iv) | Sickle cell anaemia |
| (e) | Never tires, keep on contracting and relaxing | (v) | Purkinje fibres |
| (f) | Cardiac cycle | (vi) | Cardiac muscle |
| (g) | Liquid part of the blood without corpuscles | (vii) | 0·85 sec |
Give reason for the following:
Only the veins and not the arteries are provided with valves.
Explain with reasons.
Human blood is red coloured.
Explain the difference.
Arteries and veins.
Cardiac muscles are ______.
Which side of the heart (left or right) contains oxygenated blood?
Multiple choice questions. Tick ( ✓ ) the correct choice:
The four blood groups in humans are
Define the Veins.
What are seen as greenish blue lines in our hands and legs?
Why do we call saliva a digestive juice?
All the waste products of the body are excreted through the circulatory system.
Which of the following health condition refers to the type of blood cancer in which uncontrolled increase in number of WBCs occurs?
In which of the following process blood neutrophils play an important role?
