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प्रश्न
The diagram below depicts the human heart in one of its phases. Answer the questions that follow:
- Which part of the heart is in the contraction phase?
- Give a suitable reason to justify your answer in (a).
- Distinguish between Systole and Diastole.
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उत्तर
- Ventricle parts of the heart.
- These are the lower two chambers of the heart.
- Distinguish between Systole and diastole:
| S. No. | Systole | Diastole |
| 1. | Occurs when the heart contracts to pump blood out. | occurs when the heart relaxes after a contraction. |
| 2. | The normal range of systolic blood pressure should be 90 - 120mmHg. | The normal range of diastolic blood pressure should be 60 - 80 mm Hg. |
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संबंधित प्रश्न
What are the components of the transport system in human beings? What are the functions of these components?
Fill in the blank.
In human body, heart is located on the _____ side of the chest cavity.
The help of a well-labelled diagram describes the internal structure of the human heart.
Explain the Term
Electrocardiogram (ECG)
State the Function: Pericardium
‘Heart of heart’ is called ______
A vein differs from the artery in having ______.
Fill in the blanks of the following paragraph using just two words – arteries and veins.
___(a)___ carry oxygen-rich blood from the heart to all parts of the body and ___(b)___ carry carbon dioxide-rich blood from all parts of the body back to the heart. ___(c)___ have thin walls and ___(d)___ have thick elastic walls. Blood flows at high pressure in ___(e)___. Valves are present in ___(f)___ which allow blood to flow only towards the heart. ___(g)___ divide into smaller vessels. These vessels further divide into extremely thin tubes called capillaries. The capillaries join up to form ___(h)___.
Explain the term Ligamentum arteriosum.
If a person has a heart attack, what must be done immediately?
P. Loosen his/her clothing
Q. Make him/her lie down in an airy room
R. Rush him/her to the hospital
S. Engage him/her in a conversation
