Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
Circulatory system: It is a system of organs that takes part in the flow of materials in the body of an organism inside an extracellular fluid.
Circulatory system in humans:
(a) The right atrium receives deoxygenated blood from all the parts of the body through large veins called vena cava.
(b) When the right atrium is full of blood, it contracts and the blood is forced into right ventricle.
(c) When the right ventricle is full of blood, it contracts and the blood is pumped into the pulmonary trunk.
(d) From right ventricle, the pulmonary artery carries the blood to the lungs for oxygenation.
(e) The oxygenated blood returns to the heart via pulmonary veins that empty into the left auricle.
(f) When the left auricle contracts, the blood passes into the left ventricle by the opening of bicuspid valve.
(g) On contraction of the left ventricle, the blood is pumped into the artery called aorta.
(h) The aorta branches into vessels which transports blood to the heart and all the body parts.
APPEARS IN
संबंधित प्रश्न
Why is blood needed by all the parts of a body?
Mention the exact location of the Pulmonary semilunar valve
Given below is a certain structure, write its chief functional activity.
Erythrocytes - ______.
Define the Veins.
Write a short note on the human heart.
Explain the Term
Hepatic Portal System
Complete the following sentence with appropriate word:
The foundations of physiology were laid by the physician __________.
State the Location:
Tonsils
Which component of the haemoglobin molecule combines with the oxygen molecule to form oxyhaemoglobin?
Given diagram is a schematic representation of the circulatory system in humans. Study the same and answer the questions that follow:
 |
- Label the parts 1 and 4 indicated in the diagram.
- Which of the above mentioned number is the thickest artery? Also write its name.
- Mention the number and chamber of the heart which has the thickest muscular wall.
- Which of the above numbers/structures has the maximum number of blood capillaries?
- Draw neat and labelled diagrams of the transverse section of vena cava and the part numbered as 3. Make sure to show the structural differences between these two in the diagram.
