HUMAN PHYSIOLOGY
BODY FLUIDS AND CIRCULATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
dog
|
|
|
monkey
|
|
|
bird
|
|
|
tortoise
|
Detailed explanation-1: -The name indicates that this characteristic of the human blood originates from the findings of animal experiments with monkeys: Rhesus factor derives from the rhesus monkey (Macaca mulatta).
Detailed explanation-2: -Rh antigen, often called the Rh factor, on the cell membranes of the red blood cells (erythrocytes). The designation Rh is derived from the use of the blood of rhesus monkeys in the basic test for determining the presence of the Rh antigen in human blood.
Detailed explanation-3: -Rh factor is named after the Rhesus monkey. Experiments by Karl Landsteiner and Alexander S. Wiener, showed that rabbits, when immunized with rhesus monkey red cells, produce an antibody that also agglutinates the red blood cells of many humans.
Detailed explanation-4: -So, the correct answer is ‘Macaca rhesus’.
Detailed explanation-5: -The ‘Rh’ stands for the rhesus monkey because researchers recognised that this human blood antigen was similar to a rhesus monkey blood antigen.