Skeletal System: Axial Skeleton. The Axial. Skeleton forms the longitude axis of the body, and supports and protects head, neck, and trunk
Skull
Hyoid Bone
Vertebral Column
Thoracic Cage
2 sets of bones: Cranial + Facial Bones. Cranial bone enclose and protect the brain, contain paranasal sinuses and contain attachment sites for the head and neck muscles. The facial bones are the framework for the face, contain cavities for organs of sight, taste and smell, and are passage for air and food, hold teeth.
Cranial Bones
Facial Bones
The Hyoid Bone is the only bone that doesn't articulate with another bone. This bone is situated on the neck, near the mandible, it is also related to the temporal bone. The hyoid. bone serves. as a. movable base for the tongue, and it also helps with swallowing and speech.
The Vertebral column. supports. the head and trunk and also protects the spinal cord. This column forms the vertical axis of the skeleton from the skull to the pelvis. It is made of 26 vertebral bones which are separated by discs. This includes, 7 cervical in the neck. area, 12 thoracic in the chest and 5 lumbar in the lower back.
The Cervical vertebrae is the smallest and lightest vertebrae. This vertebrae supports the head, and also where the arteries reach the brain. This vertabrae has the smallest body. This vertebrae has the Atlas (C1) and Axis (C2) which allow us to say yes and also allow us to move our head from side to side to indicate no. 
The thoracic vertabrae has a heart shaped body. This is the only vertebrae that articulates with the ribs. 
The lumbar vertebrae is the sturdiest of them all. This vertebrae is responsible for supporting the bodies weight. Unlike the cervical and thoracic vertebrae, the lumbar vertebrae has a large body. 
Infantile Skull
Unlike a grown-up's skull, an infants skull is not fully developed at birth. It takes 2 years for an infants skull to covert to bone. An infant's skull is made up soft spots called fontanels. These fontanels contain fibrous membranes to connect cranial bones, allow brain growth and also allow the skull to compress during birth.
The thoracic cage protects major organs, pectoral gridle, and upper limbs. This vertebrae consists of 3 parts: Sternum, Ribs and the Thoracic Vertebrae.
The sternum could also be known as the "Breastbone". The sternum consists of the Manubrium, Body and Xiphoid process. It articulated with the clavicles and the first 7 pairs of ribs. 
In the thoracic cage are the 12 pairs of ribs. Although there are 12 pairs of ribs in total, they are known as either true ribs or false ribs. True ribs (1-7) are attached to the sterenum by costal cartilage, meaning there is a 1-1 connection. The false ribs (8-12) attach indirectly to the sternum. Ribs (11-12) are known as floating ribs since there is a lack of sternal attachment. 