Cervical spine fractures can occur secondary to exaggerated flexion or extension, or because of direct trauma or axial loading. Pathology. The cervical spine is susceptible to injury because it is highly mobile with relatively small vertebral bodies and supports the head which is both heavy and acts as a lever.
The inactive molecule pepsinogen is cleaved in a strongly acidic environment to give off the active enzyme, pepsin. Pepsinogen is produced in the stomach by chief cells.
Pepsinogen is an inactive proenzyme which is used to form pepsin for digestion of protein. * It is secreted by chief cells and pyloric glands. * Its secretion is stimulated by vagal stimulation (nerve) ,gastrin (hormone) and histamine. * This zymo...