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प्रश्न
Which of the following is mesodermal is the origin?
पर्याय
Retina
Enamel of teeth
Heart
Liver
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उत्तर
Heart
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संबंधित प्रश्न
Draw a diagram of the human heart and label its parts.
Define the term Circulatory system.
Choose the correct answer:
Which chamber of the heart has the thickest wall?
The diagram given below represents the human heart in one phase of its activity. Study the same and then answer the question that follow:
Which part of the heart is contracting in this phase? Give a reason to support your answer.
The diagram given below represents the human heart in one phase of its activity. Study the same and then answer the question that follow:
What type of blood flows through the parts marked '1' and '2'?
The diagram given below represents the human heart in one phase of its activity. Study the same and then answer the questions that follow:
 |
- Name the phase.
- Which part of the heart is contracting in this phase? Give a reason to support your answer.
- Name the parts numbered 1to6.
- What type of blood flows through the parts marked 'l' and '2' respectively?
- How many valves are closed in this phase?
Name the Following
The valve present between the left atrium and the left ventricle.
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)___.
Mammalian lungs have enormous number of minute alveoli, which permits more ______.
Heart sound 'dub' is caused due to closing of ______.
