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प्रश्न
WBC defends the body from bacterial and viral infections.
पर्याय
True
False
उत्तर
True
APPEARS IN
संबंधित प्रश्न
Which of the following is mesodermal is the origin?
Choose the correct answer:
Which chamber of the heart has the thickest wall?
Answer in only one sentence of the following question:
Mention the role of the pacemaker in human heart.
Name an instrument which is used to hear heart sounds.
By which of the following mitral valve and tricuspid valve are attached to the papillary muscles?
Complete the analogy.
The contraction of heart muscles: Systole:: Relaxation of heart muscles: ______.
Heart is covered with double-walled membrane called ______.
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.
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.
