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प्रश्न
Describe pericardium.
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
Write a short note on human heart.
Match the terms given in column I with terms in Column II:
| Column I | Column Il |
| (i) Left-auricle | (a) Clotting |
| (ii) Right auricle | (b) Thebasius valve |
| (iii) Left ventricle | (c) Pulmonary vein |
| (iv) Right-ventricle | (d) Aorta |
| (v) Fibrin | (e) Pulmonary arch |
Answer in only one sentence of the following question:
Mention the role of the pacemaker in human heart.
Give Technical Term for the following:
What is the approximate weight of the heart of a man?
The given diagram represents the conducting system of human heart. Identify 1, 2, 3, 4.
Which of the following acts as a pace setter of heart?
Draw the neat Labelled diagram of the internal structure of the human heart.
Explain the term Fossa ovalis
The ______ have thin and less muscular ______ and have ______ to prevent back flow of ______.
Note the relationship between the first two words and suggest a suitable word/words for the fourth place:
Lub : Atrioventricular valves :: Dup : ______
