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प्रश्न
Describe pericardium.
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उत्तर
- The heart is enclosed in a membranous sac called the pericardium.
- The pericardium is formed of two main layers - outer fibrous and inner serous pericardium.
- Serous pericardium is soft, moist, and elastic. It is formed of squamous epithelium and is further divisible into two layers as a parietal and visceral layer.
- Parietal and visceral layers of serous pericardium are separated by a pericardial space.
- This space is filled with pericardial fluid (about 50ml) which acts as a shock absorber and protects the heart from mechanical injuries.
- It also keeps the heart moist and acts as a lubricant.
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संबंधित प्रश्न
What is Sinus arrhythmias?
Given alongside is a highly diagrammatic sketch of the internal structure of the human heart:
(i) Name the parts numbered 1-11.
(ii) What is the main difference in the quality of blood contained in parts 6 and 7?
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The beating of the heart of man is heart on the left side, because:
Pick out the odd one.
heart, legs, brain, kidney
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______ is the opening of the upper chamber of the heart into the lower chamber.
The walls of the heart is made up of ______.
What is the advantage of having a four-chambered heart?
When a person suffers from chest pain, the doctor immediately takes an ECG. Visit a doctor and get information about ECG. You may even look up an encyclopaedia or the internet.
