Febrile
fever
Feces
poop
Fissure
A cleft or groove
Fistula
abnormal hole connecting to skin
an abnormal or surgically made passage between a hollow or tubular organ and the body surface, or between two hollow or tubular organs.
Flatus
Farting, passing wind, or having gas, flatulence
Flora
normal gut or skin bacteria
population of microbes inhabiting the outside or inside surfaces of people (or other animals).
Fracture
broken bone
Flexion
bend joint into small interior angle
Flexion refers to a movement that decreases the angle between two body parts