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Diapedesis is :-...

Diapedesis is `:-`

A

A type of amoeboid movement

B

Movement of some WBC to tissue through the wall of blood capillary to destroy harmful bacteria

C

A type of movement in hydra

D

Filtration process of urea in kidney

Text Solution

Verified by Experts

The correct Answer is:
B
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Diapedesis means

Which of the following statements are correct for innate immunity? (I). Bacteria enter through a break in the skin. (II). Resident phagocytic cells engulf the bacteria (III). B-cells are stimulated to produce specific antibodies. (IV). Diapedesis allows new phagocytic leukocytes to invade the infected area. Codes

What is diapedesis ?

Assertion: WBCs accumulate at site of wounds by diapedesis. Reason: It is squeezing of leucocytes from endotheium.

Blood is commonly called red vascular connective tissue as its matrix is fluidy, mobile and fibre-free, and is red-coloured due to presence of haemoglobin in its RBCs. Blood is formed of two components: Plasma and Blood corpuscles. Its blood corpuscles are of three types Erythrocytes, Leucocytes and blood platelets. Leucocytes are of five types which are adapted to perform different functions. Answer the following questions related to blood: (i) List two structural peculiarities of its RBCs of human blood. (ii) Tabulate two differences between its five types of leucocytes. (iii) Define diapedesis .

Give the meaning of diapedesis.

Which corpuscles can undergo diapedesis?

Erythrocytes can come out of blood capillaries by diapedesis.