Well, the most common STD; Aids is a very tricky virus. It hides in the DNA where it cannot be found and for some mysterious reason attacks the T-Cells. This is why our body usually cannot fight it off.
Nothing, but you could get STD's, HIV then AIDS. If you are lucky you could advoid STD's and HIVs. When sperm enters anus, nothing but it is possible that sperm can enter in your blood strem if the wall of the anus is cut or opened
Montgomery glands are not an STD. They are a normal part of the human body.
No, that's how many STD's are passed.
About 20%.
Respiratory tract
Could be if he has an STD or HIV because that can be passed to the baby once it enters the body.
Nothing, but you could get STD's, HIV then AIDS. If you are lucky you could advoid STD's and HIVs. When sperm enters anus, nothing but it is possible that sperm can enter in your blood strem if the wall of the anus is cut or opened
It enters the body through the vaginal opening.
If it can be transmitted by body fluids then in some ways it is an std
Sex does not change the body unless you get a STD or pregnant and then the pregnancy or STD make the body change.
Oxygen enters via the lungs.
Montgomery glands are not an STD. They are a normal part of the human body.
Air enters the body when you inhale (Breathe in) air enters through the mouth and into the lungs. and then exhale (Breathe out) carbon dioxide (CO2)
Oxygen rich air enters the body through the lungs.
through water mostly, some enters from the air.
It enters however you take the drug. But once it is in your body, it bonds to fats and can stay in the system for months.
you breath it in