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Answer please! Given below is the diagrammatic sketch of certain type of connective tissue. Identify the parts lebelled A,B,C and D, and select the right option about them.Options: Part - A Part - B Part - C Part - D

Given below is the diagrammatic sketch of certain type of connective tissue. Identify the parts lebelled A,B,C and D, and select the right option about them.

Options:

Part - A

Part - B Part - C

Part - D

 

  • Option 1)

    Mast cell

    Macro-phage Fibroblast

    Collagen Fibres

     

  • Option 2)

    Macro-phage

    Collagen fibres Fibroblast

    Mast Cell

     

  • Option 3)

    Mast Cell

    Collagen fibres Fibroblast

    Macro-phage

     

  • Option 4)

    Macro-phage

    Fibroblast Collagen fibres

    Mast cell

     

 
Answers (1)
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As discussed in

Mast cells or mastocytes -

Two or three-lobed S-shaped nucleus, Cytoplasm is stained by basic type (Methylene blue).

- wherein

They secrete Histamine (vasodilated) takes part in allergy and inflammatory response, Serotonin or 5 hydroxytryptamines (vasoconstrictor)  and Heparin  (anti-coagulant).

 

 

White fibrous tissue -

Dense network of thick collagen fibre bundles and few fibroblasts. It is present at the joints between skull bones and make them immovable. 

-

 

 

Collagen fibres -

 Collagen fibres are most abundant(30% of the total body) fibrous element, composed of collagen protein (Tropocollagen).

- wherein

They are long, unbranched, white, shining, tough fibre, stained by eosin dye and convert into gelatin on boiling. They are digested by pepsin enzyme.

 

 

Macrophages/ histocytes/ plasmatocytes -

They are the second largest (after neuron) in size and number. 

- wherein

They have a large number of lysosomes and are phagocytic in nature; also known as scavanger cells or cleaner.

 

 


Option 1)

Mast cell

Macro-phage Fibroblast

Collagen Fibres

 

This solution is incorrect 

Option 2)

Macro-phage

Collagen fibres Fibroblast

Mast Cell

 

This solution is incorrect 

Option 3)

Mast Cell

Collagen fibres Fibroblast

Macro-phage

 

This solution is incorrect 

Option 4)

Macro-phage

Fibroblast Collagen fibres

Mast cell

 

This solution is correct 

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