Health Sciences 2300A/B Lecture Notes - Lecture 5: Sagittal Suture, Ethmoid Bone, Occipital Bone
20 Jan 2017
School
Department
Course
Professor
Document Summary
Lecture 5: the boney skeleton (2) jan 19 2017. Protection of the brain- body most important organ. Quite thin, fit to protect the brain. Size and density and weight in the upright position. Thin bones, not have heavy heads to carry around. Shape increases the strength (box-like structure), because rounded like an eggshell, forces distributed across the entire boney shell. Reason, force from finger is displaced across the surface, flatter regions are easier to break. Sutures: joining of 2 bones, specialized type of join, form solid joints. Fibres to ensure the tight joints, little movements. Skull, little to no movement (vs diarthrodial joint- free moving, designed to move, Important structures underneath, arteries and veins, critical that the bones does not move: allows for excess move, support the joint eg. In-between- amphiarthrodial joint, some movements, not as sturdy as synarthrodial and not as free as diathrodial joint (eg.
