Internal parts are just that,,internal meaning they are inside the engine. If they are not IN the engine they are external parts.
called lumen
Canopic Jars
it might have internal bleeding
The immediate response to blood vessel injury is -bleeding (external) -swelling/bruising (internal)
What internal parts are you referring to exactly?
heart,blood,blood vessel
Typically, gases like nitrogen or air are used in vertical pressure vessels. The internal pressure can vary depending on the specific application and requirements of the vessel, but it is usually regulated to ensure safe operation.
basic components parts Internal parts
Internal components are pieces that are located inside of something.
A blood vessel burst in his head and he died of internal bleeding.
by going on bbc