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What is the mitral valve connected to?
Important Questions on The Circulatory System
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| Column – I | Column – II | ||
| a. | Tricuspid valve | i. | Between left atrium and left ventricle. |
| b. | Bicuspid valve | ii. | Between the right ventricle and pulmonary artery. |
| c. | Semilunar valve | iii. | Between the right atrium and right ventricle. |
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If due to some injury the chordae tendinae of the tricuspid valve of the human heart is partially non-functional, what will be the immediate effect?
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Give reason for the following:
Blood cannot flow back from ventricles into the auricles.
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| (i) | Lymphocyte | erythrocyte |
|---|---|---|
| (ii) | Plasma | serum |
| (iii) | Mitral valve | bicuspid valve |
| (iv) | Atrioventricular node | pacemaker |
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The opening between the right atrium and the right ventricle is guarded by a valve called______Whereas______ guards the opening of the left atrium and the left ventricle -
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Represent the union of two sets by Venn diagram for each of the following.
is a prime number between and
is an odd number between and
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(i) In fishes, the heart pumps out deoxygenated blood which is oxygenated by the gills and supplied to the body parts from where deoxygenated blood is returned to the heart.
(ii) The openings of the right and the left ventricles into pulmonary artery and aorta respectively are provided with the mitral valves.
(iii) The nodal musculature has the ability to generate action potentials without any external stimuli, i.e., it is auto excitable.
(iv) The T-wave of ECG represents depolarisation of the ventricles.
Which of the above two statements are incorrect?
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Match the items given in Column I with those in Column II and select the correct option given below.
| Column I | Column II | ||
| A | Tricuspid valve | (i) | Between left atrium and left ventricle |
| B | Bicuspid valve | (ii) | Between right ventricle and pulmonary artery |
| C | Semilunar valve | (iii) | Between right atrium and right ventricle |
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A. The tricuspid and bicuspid valves are opened during joint diastole.
B. Atrial systole decrease the flow of blood into the ventricles by about 30 percent.
C. Ventricular systole increases the ventricular pressure.
D. Ventricular pressure falls causing the closure of semilunar valves.
How many of the above statements are correct:-
