Human Body

Question 1

What is the circulatory system?

Answer 1

The system which consists of blood, blood vessels and heart is the circulatory system.

Question 2

Why is blood red in colour?

Answer 2

The red colour of the blood is due to the presence of a pigment called haemoglobin.

Question 3

What are major components of blood?

Answer 3

Plasma, Platelet, WBC(White Blood Cell), RBC(Red Blood Cell)

Question 4

What is Plasma in blood?

Answer 4

The liquid part of blood. Pale yellow in colour. Carries glucose to the cells.

Question 5

What do Platelets do?

Answer 5

Helps in blood clotting.

Question 6

What is WBC?

Answer 6

White Blood is a component of blood. It has no definite shape , has nucleus and destroys pathogens.

Question 7

What is RBC?

Answer 7

Red Blood cell is a component of blood. It is disc shaped, non- nucleated, contains haemoglobin, transports oxygen and carbon dioxide

Question 8

What are arteries?

Answer 8

Arteries are the blood vessels that carry oxygen-rich blood from the heart to different parts of the body.

Question 9

What are veins?

Answer 9

Veins are the blood vessels that carry carbon dioxide - rich blood from different parts of the body to the heart.

Question 10

What are capillaries?

Answer 10

Capillaries are the thin blood vessels that copnnect arteries and veins.

Question 11

What is heart?

Answer 11

Heart is the centre of the circulatory system. It pumps blood to all parts of the body.

Question 12

What is pericardium?

Answer 12

The heart is covered by a double layered membrane called pericardium.

Question 13

How many chambers does human heart has?

Answer 13

Human heart has four chambers.

Question 14

What is heartbeat?

Answer 14

Heartbeat is defined as the rhythmic contraction and relaxation of heart muscles.

Question 15

How many times does heart of a healthy adult beats per minute

Answer 15

72 times.

Question 16

What instrument the doctor use to check heartbeat?

Answer 16

Stethocsope.

Question 17

What is excretion?

Answer 17

Excretion is process of elimination of urea, excess water, salts etc that are produced in the body as a result of life processes.

Question 18

What are kidneys?

Answer 18

Kidneys are the most important excretory organs in our body. Kidneys are bean-shaped and are located in the abdominal cavity on either side of the vertebral column. Waste products in blood filtered by kidneys are eliminated through urine.

Question 19

What are kidney transplantation?

Answer 19

Kidney transplantation is the process of transplanting one kidney from a healthy donor to a person whose both kidneys are impaired. Kidney transplantation will be possible blood group of the donor and recipient, are compatible.

Question 20

What is sweat?

Answer 20

Sweat is produced by sweat glands in skin. Excess water and salt in the body are eliminated through sweat. The heat to evaporate sweat is taken from our body. Sweating thus helps in our temperature regulation.