CRANIAL BONES OR SKULL BONES - LESSON 209
Cranial bones are of six in types. They are as follows: Cranial bones: 1. Frontal bone 2. Sphenoid bone 3. Occipital bone 4. Temporal bone 5. Parietal bone 6. Ethmoid bone Now we will see about each bone one by one. 1. Frontal Bone: This cranial bone forms the forehead, and the hollow openings that enclose the eyes. frontal bone 2. Sphenoid Bone: This bone is structurally resembles a bat. This bat shaped bone widens behind the eyes such that it forms the base part of the cranium. Sphenoid bone attaches frontal bone, ethmoid bone and occipital bone. And so this bone is called as sphenoid bone. Sphenoid means wedge or anchor. There is a small hollow depression in the sphenoid bone in which the pituitary gland is located. This depression is called sella turtica which means Turkish saddle. 3. Occipital Bone: This bone outlines the base of the cranium or skull and the back portion of the skull, as well as it joins the temporal bones and the parietal bones.