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प्रश्न
The human body has an organ A which acts as a double pump. The oxygenated blood coming from the lungs through blood vessel B enters the upper left chamber C of the double pump. When chamber C contracts, then blood goes into the lower left chamber D. The contraction of chamber D forces the blood to go into a blood vessel E which supplies oxygenated blood to all the organs of the body (except the lungs). The deoxygenated blood coming out of the body organs is taken by a blood vessel F to the right upper chamber G of the pumping organ. Contraction of chamber G forces the deoxygenated blood into the right lower chamber H. And finally, the contraction of chamber H sends the deoxygenated blood into the lungs through blood vessel I.
- What is organ A?
- Name the blood vessel (i) B (ii) E (iii) F, and (iv) I.
- What are chambers (i) C, and (ii) D?
- What are chambers (i) G and (ii) H?
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उत्तर
- The heart is the organ in the human body that acts as a double pump. Hence, organ A represents the heart.
- (i) The oxygenated blood from the lungs enters the left atrium (chamber C) via the blood vessel called pulmonary vein (B). Hence, B is pulmonary vein.
(ii) The contraction of left ventricle (chamber D) forces the blood into the blood vessel called aorta (E), which supplies the oxygenated blood to the organs of the body, except the lungs. Hence, E is aorta.
(iii) From the body tissues, the deoxygenated blood is transported back to the heart into the right upper chamber called right atrium (G), by the vena cava (F). Hence, F is vena cava.
(iv) Contraction of chamber G (right atrium) forces the deoxygenated blood into the lower right chamber called right ventricle (H). Finally, the contraction of H (right ventricle), sends the deoxygenated blood into the lungs through the blood vessel called pulmonary artery (I). Hence, I represent pulmonary artery. - (i) The chamber C represents left atrium.
(ii) The chamber D represents left ventricle. - (i) The chamber G represents right atrium.
(ii) The chamber H represents right ventricle.
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संबंधित प्रश्न
Sketch and label the ventral view of the human heart.
Draw a diagram of the human heart and label its parts.
The diagram given alongside represents the human heart in one phase of its activity. Study the same and then answer the question that follow:
Name the phase.
Name the following:
The valve of right auriculo-ventricular aperture.
Select the odd one in the following:
Tricuspid, Bicuspid, Semilunar, Foramen ovales.
Refer to fig. 7.3 and answer the following questions:
(i) Impure blood is received by
(ii) Which chamber has thickest wall
(iii) Function of bicuspid value
(iv) Function of tricuspid value
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 help of a well-labelled diagram describes the internal structure of the human heart.
Answer in only one sentence of the following question:
Mention the role of the pacemaker in human heart.
State the Location: Sino-auricular node
State the Function: Semilunar valves of the heart
State the Function: Bicuspid valve
Describe pericardium.
The blood does not flow back into the ______ when mitral valve closes.
______ valve is present at the opening of coronary sinus
______ guards the opening of inferior vena cava.
The correct match of blood vessel, its connection and O2 content is ____________.
The heart is surrounded by a double-layered 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)___.
