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.
1 Pepsin is a protease that begins digestion of proteins, breaking them into peptides and amino acids. 2  Pepsinogen, is secreted by gastric glands of the stomach into the stomach. 3  There, in the acid environment of the stomach, pepsinogen is converted into pepsin. There, in the acid environment of the stomach, pepsinogen is converted into pepsin. 2  Trypsin is a protease secreted into the small intestine by the pancreas. 3  As pepsin, trypsin digests proteins into peptides and amino acids and is made and secreted in an inactive form, trypsinogen.