skull
![Picture](/uploads/1/9/7/0/19709997/2176456.jpg)
The skull is a bone framework enclosing the brain of a vertebrate; the skeleton of a person's or animal's head. It protects the brain from the outside danger possibilities.
axis
![Picture](/uploads/1/9/7/0/19709997/8841709.jpg)
The axis is the second cervical vertebra. It is called the "axis" because the uppermost cervical vertebra. The joint between the axis and atlas is a pivot type of joint. It allows the head turn.
clavicle and scapula
![Picture](/uploads/1/9/7/0/19709997/821257.jpg)
Clavicle is the bone linking the scapula and sternum. Scapula is the shoulder blade, either of two flat triangular bones one on each side of the shoulder in human beings.