Question

How many types of leucocytes are present
Please answer correctly

Answer 1

Answer:

These broadest categories can be further divided into the five main types: neutrophils, eosinophils, basophils, lymphocytes, and monocytes.

Answer 2

Answer

firstly let's know what is leucocytes,

$\bigstar$ leuco means white and cytes means blood cells. They are also known as white blood cells and they are colourless due to the lack of haemoglobin.

$\bigstar$ 6000 - 8000 per cubic mm of white blood cells are present.

$\bigstar$ They are sperical or irregular shaped and nucleated.

Leucocytes are of five types but they are categorised of two types,

Granulocytes :-

They are of three types,

Neutrophils :

• The have multilobular nucleus. They are maximum in number.
• They are phagocytic cells and they kill bacteria and other foreign organisms entering the body.

Eosinophils :

• They have bilobular nucleus.
• They resist infection and are also associated with allergic reaction.

Basophils :

• They have S - shaped nucleus
• They secrete histamine, serotonin etc and they are involved in inflammatory reactions.

Agranulocytes :-

They are of two types,

Lymphocytes :

• They have round nucleus. They are of two major type 'B' and 'T' forms.
• They are responsible for immune response of the body.

Monocytes :

• Nucleus is centrally placed and horseshoe shaped.
• They are phagocytic in nature.