Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEETZoologyBody Fluids and Circulation

What happens when an Rh negative person is exposed to Rh positive blood?

Options

  1. AThey become Rh positive.
  2. BThey form specific antibodies against the Rh antigens.
  3. CThey become Rh negative.
  4. DThey don't form any antibodies.

Correct answer

B. They form specific antibodies against the Rh antigens.

Step-by-step solution

: Another antigen, the Rh antigen similar to one present in Rhesus monkeys (hence Rh), is also observed on the surface of RBCs of majority (nearly 80 per cent) of humans. Such individuals are called Rh positive (Rh+ve) and those in whom this antigen is absent are called Rh negative (Rh-ve ). An Rh-ve person, if exposed to Rh+ve blood, will form specific antibodies against the Rh antigens. Therefore, Rh group should also be matched before transfusions . A special case of Rh incompatibility (mismatching) has been obs

Practice Body Fluids and Circulation on Quantrex Academy →

More from Body Fluids and Circulation

The WBC count of a person's blood sample is 8000 /cu.mm. How many eosinophils and lymphocytes would be in the same blood sample approximately ? 2026Which of the following statements is incorrect ? 2026The opening between the right atrium and the right ventricle is guarded by __________. 2026The number of action potentials generated by sino-arterial node (SAN) in a healthy human is __________ per minute. 2026Select the incorrect statements with reference to Rh grouping : A. Erythroblastosis foetalis is a condition observed having foetus with Rh ^ -ve blood and mother with Rh ^ +ve bloo 2026Cardiac activities of the heart are regulated by: A. Nodal tissue B. A special neural centre in the medulla oblongata C. Adrenal medullary hormones D. Adrenal cortical hormones Cho 2025'Lub' sound of Heart is caused by the ______ 2024Following are the stages of pathway for conduction of an action potential through the heart A. AV bundle B. Purkinje fibres C. AV node D. Bundle branches E. SA node Choose the corr 2024 Full Body Fluids and Circulation list All NEET PYQs