Advertisements
Advertisements
Questions
How do you account for the following difference?
The walls of the right ventricle are thicker than those of the right auricle.
Give reasons/explain:
The walls of right ventricle are thicker than those of the right auricle.
Advertisements
Solution
The right ventricle pumps blood to the lungs for oxygenation, whereas the right auricle receives the blood from the vena cavae and passes it to the right ventricle. Therefore, the walls of the right ventricle are thicker than those of the right auricle.
APPEARS IN
RELATED QUESTIONS
The blood from the heart is transported to all parts of the body by the ______.
The diagram given below represents a section of the human heart. Answer the questions that follow :

(i) Which parts of heart are in the diastolic phase? Give a reason to support your answer.
(ii) Label the parts numbered 1 and 2 in the diagram. What type of blood flows through them?
(iii) What causes the heart sounds ‘LUBB’ and ‘DUP’?
(iv) Name the blood vessels that supply oxygenated blood to the heart muscles.
(v) Draw neat labelled diagrams of a cross section of an artery and a vein.
Give reason, why a matured mammalian erythrocyte lacks nucleus and mitochondria?
Fill in the blanks with suitable words given below:
The oxygen-rich blood is pumped into different parts of the body through ______.
Name the Following
The enzyme which converts fibrinogen to fibrin.
Name the systems that carry out the different functions of the body.
Label the diagram given below to show the four main parts of the urinary system and answer the following questions.

- Which organ removes extra salts and water from the blood?
- Where is the urine stored?
- What is the tube through which urine is excreted out of the body?
- What are the tubes that transfer urine from the kidneys to the urinary bladder called?
A female has haemophilic brother and parents having nonual blood clotting. She marries a male who has no history of haemophilia in his family. What is the possibility of her children having this disease?
Which of the following cells are produced from reticulocytes?
Which of the following is the main site of erythropoiesis in adults?
