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प्रश्न
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)_____.
उत्तर
Arteries carry oxygen-rich blood from the heart to all parts of the body and veins carry carbon dioxide-rich blood from all parts of the body back to the heart. veins have thin walls and arteries have thick elastic walls. Blood flows at high pressure in arteries. Valves are present in veins that allow blood to flow only towards the heart. arteries divide into smaller vessels. These vessels further divide into extremely thin tubes called capillaries. The capillaries join up to form veins.
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संबंधित प्रश्न
Fill in the blank.
In human body, heart is located on the _____ side of the chest cavity.
Draw a sectional view of the human heart and label on it Aorta, Pulmonary arteries, Vena cava, Left ventricle.
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.
Complete the following sentence with appropriate word:
The ______ is the most powerful organ in the circulatory system.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
The heart of a normal human adult beats more than one lakh times per day.
Pick out the odd one.
heart, legs, brain, kidney
For which of the following reason the left ventricle of human heart has its wall thicker than the right ventricle?
____________ guards the left atrioventricular aperture in human heart.
In which of the following parts of the human body are sweat glands absent?
Ventricles give rise to two large blood vessels called ______ and ______.
