Biology
Given alongside is a diagram of the human heart showing its internal structure. Label the parts marked 1 to 6, and answer the following questions.

(a) Which type of blood is carried by the blood vessel marked 2?
(b) Name the main artery which takes the blood from heart to different parts of the body?
(c) Which chamber of the heart receives deoxygenated blood from the body?
Answer
The parts marked 1 to 6 are labelled below:
1 → Left pulmonary artery
2 → Superior vena cava
3 → Left pulmonary vein
4 → Right auricle
5 → Left ventricle
6 → Right ventricle
(a) Deoxygenated blood is carried by the blood vessel marked 2 (Superior vena cava).
(b) Aorta
(c) Right auricle
Related Questions
Name any four heart-related conditions that occur commonly in humans. Briefly explain the cause and symptoms of each of them.
Explain — (a) Universal donor (b) Universal recipient
During surgical operations or during accidents, the patient may be given blood from outside to save his life. What is the technical name of this process ? Briefly explain the precautions to be observed and taken in this process.
Rohit, Rohan's elder brother, met with an accident on his way back from school and lost a significant amount of blood. At the hospital the doctor said he needed an immediate blood transfusion.
Rohan overheard the doctor asking about everyone's blood group in the family. Their father's blood group is O and their mother's blood group is AB. Based on the information given above, answer the questions that follow :(a) Suppose Rohit's blood group is B. Which parent can give blood to him - his mother or his father ?
(b) If Rohan's blood group is A, can he donate blood to his brother ?
(c) Blood groups are said to be differentiated based on the presence of certain antigens. What are antigens and where are they found in the blood ?