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प्रश्न
The diagram given below represents the human heart in one phase of its activity. Study the same and then answer the questions that follow:
 |
- Name the phase.
- Which part of the heart is contracting in this phase? Give a reason to support your answer.
- Name the parts numbered 1to6.
- What type of blood flows through the parts marked 'l' and '2' respectively?
- How many valves are closed in this phase?
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उत्तर
- Ventricular systole.
- The right and left ventricles are contracting in this phase. Tricuspid and bicuspid valves are closed.
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- Pulmonary artery,
- Aorta,
- Pulmonary vein,
- Left auricle,
- Bicuspid valve (mitral valve),
- Right ventricle.
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- Pulmonary artery: It carries deoxygenated blood.
- Aorta: It carries oxygenated blood.
- Two (bicuspid and tricuspid) valves.
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संबंधित प्रश्न
Explain the Term
Pace maker
Name an instrument which is used to hear heart sounds.
State the Function: Coronary artery
State the Function: Tricuspid valve
Column 2 is a list of items related to ideas in Column 1. Match the term in Column 2 with the suitable idea given in Column 1.
| Column 1 | Column 2 |
| (i) Superior vena cava | (a) Collect deoxygenated blood from the wall of the heart. |
| (ii) Inferior vena cava | (b) Carry oxygenated blood to heart muscle. |
| (iii) Pulmonary vein | (c) Collects deoxygenated blood from upper part. |
| (iv) Coronary veins | (d) Collects deoxygenated blood from lower parts. |
| (v) Coronary artery | (e) Brings oxygenated blood from lungs. |
| (vi) Aorta | (f) Large artery |
| (vii) Heart attack | (g) Large vein |
| (viii) Blood Pressure | (h) Oxygenated blood |
| (ix) Tricuspid valve | (i) Sphygmomanometer |
| (x) Bicuspid valve | (j) Allows blood flow from right auricle to right ventricle. |
| (xi) Contraction and relaxation of heart | (k) Blocking of coronary arteries. |
| (l) Cardiac muscle. | |
| (m) Allows blood flow from left auricle to left ventricle. | |
| (n) Allows blood flow from right ventricle of pulmonary aorta. |
Draw diagram of conducting system of human heart. Label SA node and bundle of His.
A vein differs from the artery in having ______.
______ externally separates ventricles from each other.
Draw a neat diagram of the conducting system of human heart and label AV node, Bundle of His and Purkinje fibres.
Explain the term Ligamentum arteriosum.
