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.
Wheel and Axle A wheel is a lever arm fixed to a shaft, called an axle. The wheel and axle move together as a simple lever to lift or move an item by rolling. It is important to know which is applying the effort and resistance force â wheel or axle.