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प्रश्न
Give reason for the following:
The walls of the left ventricle are thicker than the walls of all other chambers.
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उत्तर
The left ventricle pumps blood to the farthest points in the body such as the feet, the toes and
the brain against the gravity. Thus, it requires greater force to push the blood. In order to
with stand with the force applied the walls of the left ventricle are thicker than the walls of
all the chambers.
संबंधित प्रश्न
Angina pectoris is due to
Name the following:
The phase of the cardiac cycle in which the auricles contract.
Given below is a highly schematic diagram of the human blood circulatory system.
Which numbers represent the following respectively?
Aorta
Hepatic portal vein
Pulmonary artery
Superior vena cava
Renal vein
Stomach
Fill in the blanks with suitable words given below:
The two lower chambers of the heart are called ______.
The oxygen-rich blood from the lungs comes into the ______ of the heart.
The artificial method of filtering the blood or removing the wastes from the blood.
Complete the following sentence with appropriate word:
The membranous covering of the heart is _______.
Use your brain power!
How is the air that we inhale purified in our body?
Given below are four statements regarding human blood circulatory system:-
- Arteries are thick walled and have narrow lumen as compared to veins.
- Angina is acute chest pain when the blood circulation to the brain is reduced.
- Persons with blood group AB can donate blood to any person with any blood group under ABO system.
- Calcium ions play a very important role in blood clotting.
Which two of the above statements are correct?
 |
Can you answer why the pulmonary artery shown in Fig. is blue in colour?
