There is no sense organ beginning with the letter U.
I'm not sure,but my guess would be vagina,as it senses the penis entering it.plus it's the only thing I can think of that starts with a V
Your stomach.
The skin.
hypertrophy
another name for your heart is th main organ of your bodybrijrajsinh
Atmosphere
intriguing
Their is not another name for HIV that starts with an R. That said, HIV is a type of retrovirus. That is probably the word you are looking for.
Rubella is another name for German measles.
Another name of a dog house is a kennel.
reed organ
aqueduct