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प्रश्न
Complete the following sentence with appropriate word:
The average heartbeat rate is ____ beats per minute in human being.
उत्तर
The average heartbeat rate is 72 beats per minute in human being.
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संबंधित प्रश्न
Which vein brings clean blood from the lungs into the heart?
The help of a well-labelled diagram describes the internal structure of the human heart.
Complete the following sentence with appropriate word:
The ______ is the most powerful organ in the circulatory system.
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. |
WBC defends the body from bacterial and viral infections.
A vein differs from the artery in having ______.
Assertion: Human heart does not allow the mixing of oxygen to reach blood with carbon dioxide to reach the blood.
Reason: Human heart has different chambers.
What is the advantage of having a four-chambered heart?
Why is the sino-atrial node referred to as the pacemaker of the human heart?
Give scientific reason.
Human heart is called as myogenic and autorhythmic.
