PSY320H1 Chapter Notes -Xiphoid Process, Vertebral Artery, Spinal Canal
Document Summary
7. 2 the skull is composed of 8 cranial bones and 14 facial bones: the bones of the skull protect the brain and guard the entrances to the digestive and respiratory systems. 22 bones: 8 form the cranium and 14 associated with the face. 7 other bones associated with the skull: six auditory ossicles are situated within the temporal bones, and the hyoid bones is connected to the inferior surface of the temporal bones by a pair of ligaments. 8 cranial bones: occipital, bones, frontal bone, sphenoid, ethmoid, and the paired parietal and temporal bones: together, the cranial bones enclose the cranial cavity, a fluid filled chamber that cushions and supports the brain. 2 main function of sinus: (1) makes the bone lighter, (2)the mucous membrane lining them produces mucus that moistens and cleans the air in and adjacent to the sinus. 4 major sutures: lambdoid suture: (l shaped). This stuture separates the occipital bone from the two parietal bones.
