describe stem cell? differntiate between a malignant and benign tumor?

describe stem cell?

differntiate between a malignant and benign tumor?

describe the role of

tight juction

gap junction

adhrens junctions and desmosomes

Solutions

Expert Solution

Stem cell : Stem cell is a special cell and it capable to differenciate and divide into new cell form . Stem cells also play a major role in providing new cells of the body and it replace special kinds of the cell that are lost of damages from several causes.Haematopoiesis is a important process in which new cell formed in the bone marrow from the Stem cells and new formed cell migrate via the bloodstream.

Malignant tumour it grow slowly and after rapidly.it extends into tissue ( neighbouring) and move with the blood and lymph this the secretion of lymphatic system to other parts and malignant tumour is a major characteristics are it is cancerous. Benign tumour grow slowly and it remains intact and it is a type of non cancerous.

Tight junction play a major role in passege several ions and molecules between the cellular spaces.gap junction play a major role to allow molecule and various ions and impulses and it pass through the cellular regulatory gate. Adherens junction perform function like intiation stabilization ,supportive in cytoskeleton.

Desmosomes is a specialized junction and it play major role to provide special adhesin in the cell.

gladiator answered 1 year ago

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