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Enlarged Prostate
...  hyperplasia (BPH) or benign prostatic hypertrophy is the increase in size of the prostate in middle-aged and elderly men. This process is characterized by hyperplasia of prostatic stromal and epithelial cells, causing the formation of big and fairly discrete nodules in the periurethral area of the prostate. When sufficiently large, the nodules compress the urethral canal to cause partial  ...

Neoplasia
...  obstruction a dramatically decreased appetite (this is said to contribute to the weight loss) abdominal pains and constant headaches Carcinoma Pertains to a neoplasm that originates within the epithelial tissues. As a result, there will be a presence of open sores or wounds of unexplainable origin which also heal at a very slow pace. These sores bleed or ooze both constantly and  ...

Ovarian Cancer
...  in tearing of the tissue then only to repair itself afterwards. Ovarian Cancer Classification Ovarian tumors have three distinct types and each of them are named after where they are located: epithelial tumors - take form on the surface of both ovaries. It is also the most common type. Germ cell tumors - form in egg-producing cells. Usually affect younger women. Stromal Tumors - develop  ...

Glandular Structure
...  structure is a type of tissue that performs a specific function, usually by secreting substances. epithelial tissues make up the lining of the glands. With their different secretions, they can control the different processes that occur in the body, especially those that are of endocrine in origin or excrete unwanted waste products. Exocrine The widely-distributed glandular structure  ...

Alveoli
...  alveolus increases to accommodate the air inside. Histology Under the microscope, the alveoli look like hollow spaces. The empty spaces are the area of gas exchange. The lining is a simple squamous epithelial tissue to allow the diffusion of gas to occur. It contains collagen and elastic fibers to accommodate the constant stretching of the organ. Because of the large amount of capillaries,  ...

Gall Bladder
...  it pours its secretion in the duodenum of the small intestine through the common bile duct. Histology If you examine a portion of the gall bladder, you will see structures clearly. Simple columnar epithelial tissue lines the surface of the organ. The walls are about two cm thick with three visible coats, an internal mucous and muscular coat, the middle connective tissue layer, and the  ...

Blood Vessels
...  the heart. They are tough tube-like structures which have smooth lining on the inside. Each artery is composed of three different layers; namely, the outer tissue, muscular middle and inner layer of epithelial cells. The reason why the arteries are very strong on the outer and middle layers is to enable them to withstand the pressure of pumping blood. The smooth layer is such so that the path of  ...

Salivary Glands
...  quality as water, only with an enzyme for digestion. Mucous cells, the other type, produce secretions that are more viscous and thick. All salivary ducts’ lumina is covered with cuboidal epithelial cells. The salivary glands are controlled by the two divisions of the autonomic nervous system. Viscous saliva is released by stimulating the sympathetic impulses. The watery saliva from  ...

Small Intestine
...  that separates the one from the other is known as the ileocecal valve. Structural Modifications of the Small Intestine Food that has been broken down to its molecular components is absorbed by the epithelial lining of the intestinal mucosa. The small intestine has this, and all three major segment of the organ are capable of absorbing food but the area that is mainly concerned with the  ...

Tunics
...  mucosa is a lining that is situated along the lines of the lumen. It secretes a certain kind of mucous on the GI tract and is also capable of absorbing nutrients. This is formed by simple columnar epithelial cells, supported by connective tissues referred to as lamina propria. The lamina propria is home to lymph nodules - which help the body fight diseases and infections. Just outside this  ...


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