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प्रश्न
Which of the following is mesodermal is the origin?
विकल्प
Retina
Enamel of teeth
Heart
Liver
उत्तर
Heart
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संबंधित प्रश्न
Define the term Circulatory system.
Complete the following sentence with appropriate word:
The heart is made up of special muscles, the _______ muscles.
State the Function: Bicuspid valve
Draw diagram of conducting system of human heart. Label SA node and bundle of His.
For which of the following reason the SA node acts as the normal pacemaker?
______ externally separates ventricles from each other.
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)_____.
The rate of heartbeat is determined by ______.
The QRS complex in a standard ECG represents ______.
Note the relationship between the first two words and suggest a suitable word/words for the fourth place:
Lub : Atrioventricular valves :: Dup : ______
