Internal parts are just that,,internal meaning they are inside the engine. If they are not IN the engine they are external parts.
What are the internal parts of leaf
called lumen
Canopic Jars
it might have internal bleeding
label the internal parts of the cpu
The immediate response to blood vessel injury is -bleeding (external) -swelling/bruising (internal)
xylem vessel is a vessel in plants that transport water and minerals from the roots to parts of the plant where it is needed, through transpiration and turgor pressure in roots.
What internal parts are you referring to exactly?
heart,blood,blood vessel
basic components parts Internal parts
Internal components are pieces that are located inside of something.