Normal Histology | Histology Image Gallery
Inflammatory Bowel Disease
Mon 11 May 2009 10:42:41 PM EDTFind images and pictures on inflammatory bowel diseases, including ulcerative colitis and crohns disease. I have included these two diseases in order to compare with the normal appearance of the colon. Inflammatory bowel diseases have inflammatory destruction of the colon mucosa and wall and depending on the extent of involvement, one can diagnose crohn's versus ulcerative colitis, as crohns involves the entire bowel wall while ulcerative colitis is restricted to the mucosa mainly.
Esophagus
Mon 11 May 2009 10:43:22 PM EDTThe esophagus consists of a mucosa, with nonkeratinizing stratified squamous epithelium, lamina propria and muscularis mucosae. Below, there is a submucosa containing secreting glands. Muscularis propria allows for swallowing, consisting of striated muscle in the upper portions of the esophagus to smooth muscle in the lower thirds. And an adventitia.
Fallopian Tube
Mon 11 May 2009 10:45:12 PM EDTThe fallopian tube consists of three layers within its wall. The internal mucosa, which is made up of primary folds is lined by columnar epithelium, with three different types of cells, secretory, ciliated and peg cells. Then there is an intermediate muscular layer with an inner circular and an outer longitudinal layer. The outermost layer is the serosa, which is basically similar to peritneum.
Gallbladder
Mon 11 May 2009 10:45:56 PM EDTThe gallbladder is similar in histology to the gastrointestinal tract. The gallbladder consists of epithelium of simple columnar cells. There are deep infolds of the epithelium termed Aschoff's sinuses that can fool many into thinking there is invasive cancer. The epithelium is surrounded by smooth muscle, muscularis externa. Underneath the epithelium, there is a connective tissue lamina propria. There is a small layer of muscle thereafter, and then serosa and adventitia.
Heart
Mon 11 May 2009 10:46:40 PM EDTHeart muscle, also known as cardiac muscle, are striated and display the same banding pattern as skeletal muscle cells. The differences are that cardiac muscle cells are short and branch often, have only one or two nuclei that are found centrally in the cell. Cardiac cells are joined by intercalated discs and do not have satellite cells, but cardiac cells do have stem cells.
Kidney
Mon 11 May 2009 10:47:18 PM EDTThe kidney is the filter of the body. The kidney consists of a cortex and medulla, similar to other organs like the adrenal gland. The renal medulla consists of pyramids, papillae and renal columns. The renal cortex consists of the periphery of the kidney, with the capsule and medullary rays. The nephron is the main unit of the kidney. The nephron consists of Bowman's capsule, proximal convoluted tubule, loop of Henle and distal convoluted tubule.
