Question

For 65 points answer this...

explain in detail about leucocyte acc to class 12th

Answer 1

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հίί ʍαtε_______✯◡✯
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һєяє' ʏȏȗя ѧṅśwєя ʟȏȏҡıṅɢ ғȏя________
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✯LEUCOCYTE :--genesis of WBC

TYPES OF LEUCOCYTE :--
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@Granulocytes :--

●granules in their cytoplasm can be stained.

●biologically active substances involved in inflammatory and allergic reactions.

●neutrophils , eosinophil and basophils .

@agranulocytes. :--

●lack visible cytoplasmic granules .

●lymphocytes and monocytes.

@LEUCOCYTE LEVEL IN THE BLOOD :--

●Normally :-- 4,000 to 11,000 cells /mm
●abnormal leucocyte level :-above 11,000 cells /mm

GENREL FEATURES OF LUCOCYTES :-

☆mobile unit of the body 's protective system

☆formed partially in the bone marrow and partially in the lymph tissue.

☆transported in the blood to different parts of the body where they are needed.

☆have a special ability to "seek out and destroy " a foreign invader.

↪LIFE SPAN :--

@granulocyte :-- 4 to 8 hour.

@monocyte :- 10 to 20 hour in circulation .

@lymphocyte can live for week to months when they are continually circulate through lymph nodes and other lymphatic tissue.

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hope it helps you

⭐BRAINLY★★

Answer 2

White blood cells (also called leukocytes or immune cells) are cells which form a component of the blood.

They help to defend the body against infectious disease and foreign materials as part of the immune system.

There are normally between 4x109 and 11x109 white blood cells in a litre of healthy adult blood - about 7,000 to 25,000 white blood cells per drop.

In conditions such as leukaemia this may rise to as many as 50,000 white blood cells in a single drop of blood.

As well as in the blood, white cells are also found in large numbers in the lymphatic system, the spleen, and in other body tissues.