HLSC 1200U Lecture Notes - Lecture 8: Sphenoidal Sinus, Lambdoid Suture, Ethmoid Bone
Document Summary
Chapter 12-16 bones, muscles & joints part 2- axial skeleton. Location: forehead and anterior part of top of cranium. Forms upper part of orbits and coronal suture with parietal bones. Features: form several sutures, lambdoid suture (with the occipital bone), squamous suture (with temporal bone and part of sphenoid), coronal suture (with frontal bone) Location: lower sides of cranium and cranium floor. Features: house middle and inner ear structures and mastoid sinuses. Location: lower, posterior part of the skull. Features: forms immovable joints with three other cranial bones and a movable joint with the first cervical vertebra. Features: contains the sphenoid sinuses and anchors frontal, parietal, occipital, and ethmoid bones and forms part of lateral wall and part of floor of orbits. Location: anterior to sphenoid and posterior to nasal bones. Features: complex, irregular bone which forms anterior cranial floor, medial orbit walls, upper nasal septum, and sidewalls of nasal cavity.
