Answer: Spleen
List of the organs in the immune system:
Lymphoid
Thymus
Lymph nodes
Slpeen
Lymphatic
The receptor for smells are known as tastebuds which is answer D
A patient whose speech is slurred, and difficult to understand, is experiencing dysarthria.
Blood type O, it can be given to other types, but it can not receive other types, because of the different properties in the blood.
Pyrexia mean rise in body temperature. Using your context clue from the word pyro you can guess that Pyr mean fire or heat related.