supplies blood to the anterior (front) parts of the scalp, ear, face, neck, and side of the head. Facial artery external maxillary artery supplies blood to the lower region of the face, mouth, and nose.
Axle bushing is an independent plain bearing that is inserted into a housing to provide a bearing surface for rotary applications; this is the most common form of a plain bearing.[8] Common designs include solid (sleeve and flanged), split, and clenched bushings.
A bushing can be a cylindrical piece that serves as a spacer for a rod or shaft. It can also be a lot tech bearing. Then there is also the pipe bushing as shown on the site below. A bearing is typically a device to permit a shaft to rotate with reduced friction.