BIOLOGY 20 Lecture Notes - Lecture 9: East Los Angeles College, Spiral Fracture, Vertebral Compression Fracture
Document Summary
Form internal callus (beginning of endochondrial ossification) Vascular comes in (sos signals that tell vasculature to come in) Bring progenitor cells divide and make more space for bone cells. Open (compound) bone projects through skin. Spiral fracture due to twisting stresses. Greenstick one side of bone shaft broken (children) Soldier in and broken x, y, and z bone. Inner ear infection infect the mastoid (air cells/open space) close to brain (infection in brain) Drain all fluid out of inner ear so it does not get into brain. Cranium = frontal parietal, temporal, occipital, sphenoid, ethmiod. Coronal suture divides frontal vs sagittal. Bregma where the sagittal and coronal suture meets. Lamboid suture divides parietal from occipital. Squamous suture divides temporal from parietal. Fontanels sites of ossification came together and fused. Metopic suture don"t get that rigid anymore; close off very well until they don"t trigonocephaly.
