mouth bleeding. or you're coughing it up. Get checked for Tuberculous's ("T.B.") ASAP
I hate to be the bearer of bad news, but most likely yes.
A type of spit test could be used to identify if a person is using drugs or not. The saliva, or "spit" is then tested through a lot of machines over a time period and then the results to the spit test are given back.
Generally, but not always the case. Spit you don't swallow is called drool.
Yes, the bacteria in human spit helps speed up the germination of plants.
It appears when you move your mouth and speak.
because blood/spit contains cells
If you spit up blood you need medical treatment as soon as possible.
They spit blood out there eyes by putting their eyes behind their head and use heat to draw blood out their eyes.
no
Yes, go to the doctor and he will tell you what to do next. Spitting blood is a problem.
There are no Iguanas that 'spit blood'. I think you're referring to the horned lizard - which, as a defence mechanism, has the ability to rupture the blood vessels at the corner of its eyes - shooting a stream of blood at an attacker.
If there was blood in the mouth, they would probably spit it out if they didn't want it. They wouldn't do so for any other reason in common legend.
tuberculoses and lung rupture make you cough blood, but pretty much anything that causes you to bleed inside your mouth can cause you to spit blood.
The answer would be no. If the person spit blood into your mouth and you had a sore then YES. Spit will not give you HIV.
Go to a doctor...immediately.
Nicotene does effect blood pressure. But i know of no studies that look at "spit tobacco". Has any one seen any research on this? Spit tobacco has nicotene in it also which raises blood pressure.
It is your spit. Your spit is more tham germ but it is your blood, your DNA and also it is like a caterpillar in your mouth. That is why people would'nt want to get near to your spit