Assertion : Mast cells in the human body release excessive amounts of inflammatory chemicals which cause allergic reactions.
Reason : Allergens in the environment on reaching human body stimulate mast cells in certain individuals.
If both Assertion and Reason are true and the reason is the correct explanation of the assertion
If both Assertion and Reason are true but the reason is not the correct explanation of the assertion
If Assertion is true statement but Reason is false
If both Assertion and Reason are false statements
A.
If both Assertion and Reason are true and the reason is the correct explanation of the assertion
Mast cells act on body's defense mechanism. When some allergens like different pollutants, smog, smoke, pollen grains etc. come in contact with mastcell, they stimulate the mast cells. The allergic reaction is triggered by cross linking of IgE molecules on the surface of mast cells by allergen. And ultimately mast cells release excessive amounts of inflammatory chemicals which cause allergic reactions.
Which of the following cytoplasmic granules contain histamine
Basophils
Acidophils
Eosinophils
Neutrophils
Liver damage caused by excessive drinking of alcohol is called
hepatitis
dematitis
liver cirrhosis
liver diarrhoea
Which organ is considered as "Graveyard of RBC" where most of them are destroyed by macrophages
Red bone marrow
Spleen
Kidney
Intestine
Only one of the following four ways through which AIDS can spread?
Infected needles and syringes
Through mosquito bites
Looking after AIDS patient
Shaking hands, coughing, sneezing, hugging
Which of the following is not immunised by triple antigen ?
Typhoid
Tetanus
Diptheria
Whooping cough
Squeezing of leucocytes out from the endothelium of capillaries to fight foreign agents. is known as
haemolysis
diapaedesis
phagocytosis
rouleaux
