Advertisements
Advertisements
प्रश्न
Why do we sweat more in summer?
संक्षेप में उत्तर
उत्तर
- Sweating plays an important health role as it helps to maintain constant body temperature by cooling us down.
- When it is hot and we sweat that moisture evaporates and cools us immediately.
- This is why we sweat more when the summer is very hot.
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
The rhythmic expansion and contraction of the heart is called ______.
The wave of expansion of an artery when blood is forced into it is called:
Initiation and stimulation of heartbeat take place by nerves.
The closure of the mitral and tricuspid valves at the start of the ventricular systole produces the first sound ‘LUBB’.
What are heart sounds? How are they produced?
Why is the Sinoatrial node called the pacemaker of the heart?
Doctors use the stethoscope to hear the sound of the heart. Why?
Match the parts of the heart in Column I with the direction of the flow of blood in Column II.
| Column I | Column II | ||
| (i) | Right ventricle | (a) | Pushes blood into the pulmonary artery. |
| (ii) | Pulmonary veins | (b) | Take deoxygenated blood from the heart to the lungs. |
| (iii) | Left atrium | (c) | Receives blood from different parts of the body. |
| (iv) | Pulmonary arteries | (d) | Bring oxygenated blood from the lungs to the heart. |
| (v) | Left ventricle | (e) | Pushes blood into the aorta. |
| (vi) | Right auricle | (f) | Receives deoxygenated blood from the pulmonary veins. |
The 'Lub' and "Dub" heart sound are due to ______.
The heart sound 'Dub' is produced when ______.
