The field of science that pertains to the study of anatomical structures is called <u>microscopic</u> anatomy.
If you are talking about chewing tobacco then it would be gum cancer
Answer:
Hemorrhage: Bleeding or the abnormal flow of blood. A hemorrhage may be "external" and visible on the outside of the body or "internal," where there is no sign of bleeding outside the body. ... The term "hemorrhagic" comes from the Greek "haima," blood + rhegnumai," to break forth; a free and forceful escape of blood.
Explanation:
Internal bleeding occurs when blood leaks out through a damaged blood vessel or organ. External bleeding happens when blood exits through a break in the skin. Blood loss from bleeding tissue can also be apparent when blood exits through a natural opening in the body, such as the: mouth.
New technology that we didn't use to have, antibiotics and medicines created that help prevent infections