BLOOD CIRCULATORY SYSTEM

Question 1

What is a heart and it’s functions?

Answer 1

The heart is a very important organ. It pumps blood into blood vessels to all parts of the body. It is a muscular organ which is approximately the size of a clenched fist.

Question 2

Where is the exact location of the heart?

Answer 2

It is located in the middle of chest, slightly to the left.

Question 3

What is the function of B. C. S.?

Answer 3

It transports substances and protects the body against diseases and germs

Question 4

What is the function of Plasma?

Answer 4

Plasma is a yellowish fluid. It transports water and dissolved substances such as salts, sugars, hormones and dissolved oxygen to all parts of the body.

Question 5

What are Red Blood Cells and it’s function?

Answer 5

• Red in colour because they have a pigment called Haemoglobin
• Large Numbers in quantity
• Small in size
• Biconcave Disc Shape
• No Nucleus

Function : It transports oxygen to all parts of the body.

Question 6

Describe white blood cells and its functions.

Answer 6

• Colourless as it has no pigment
• Larger in size
• Fewer in quantity
• Irregular Shape
• It has a Nucleus

Function: It protects the body against diseases.

Question 7

what are platelets and it’s functions?

Answer 7

Platelets are small fragments of cells found in blood.

Function :

• It helps in blood clotting
• It prevents excessive loss of blood at injury site.

Question 8

Name the 3 components of the Blood Circulatory System (BCS)

Answer 8

• Blood
• Blood vessels
• Heart

Question 9

List the components of blood.

Answer 9

• Red Blood Cells
• White Blood Cells
• Platelets