BMS 250 Chapter Notes - Chapter 1: Retina, Epigastrium, Costal Cartilage
Document Summary
Posterior aspect: it contains cavities that are completely encased in bone and are physically and developmentally different from the ventral. The posterior aspect is subdivided into two enclosed cavities. A cranial cavity is formed by the bones of the cranium, it houses the brain. The second cavity is the vertebral canal, which is formed by the bones of the vertebral column, and houses the spinal cord. Ventral cavity: the larger, anteriorly placed cavity in the body. Unlike the posterior aspect, the ventral cavity and its subdivisions do not completely encase their organs in bone. The ventral is partitioned by the diaphragm into a superior thoracic cavity and an inferior abdominopelvic cavity. The subdivisions of the ventral cavity are lined with thin serous membranes. In this usage a membrane is a continuous layer of cells, as compared to the plasma membrane that surrounds a single cell.
