Epithelium

The Prostate Gland: An Overview: Anatomy: The prostate gland is shaped as an inverted cone in which the apex is pointing downward, the base is referring upward, and the midgland is sandwiched in between. In an antro-posterior view, the gland lies with its long axis parallel to the anterior rectal wall. It is bordered superiorly by the bladder (ventrally) and the seminal vesicles (dorsally), and inferiorly by the urogenital diaphragm (Jung and Westphalen, 2012). The prostate is separated from…

capable of secretion including breast, lungs, bladder, colon and prostate. Carcinomas are of two types – adenocarcinoma and squamous cell carcinoma. Adenocarcinoma develops in an organ or gland and squamous cell carcinoma originates in squamous epithelium. Adenocarcinomas may affect mucus membranes and are first seen as a thickened plaque-like white mucosa. These are rapidly spreading cancers. 2. Sarcoma These cancers originate in connective and supportive tissues including muscles,…

Breast cancer in females TERMINOLOGY CLINICAL CLARIFICATION ? Malignancy that develops in the cells of the breast which proliferates uncontrollably; most commonly ductal and lobular carcinoma ? Diagnosis requires a tissue biopsy for microscopic examination to determine pathology CLASSIFICATION ? The TNM classification is used for clinical staging of breast tumors. The American Joint Committee on Cancer (AJCC) 7th edition stages breast cancer as follows:?26 ? TX: primary tumor cannot be…

What is biodiversity? Introduction Biodiversity is defined as the variety of life on Earth at all its levels and includes genes to ecosystems, as well as the ecological and evolutionary processes that sustain it (Cardinale, 2012). The Earth’s biodiversity has long been a source of wonderment and scientific curiosity, but is increasingly becoming a source of concern. The sheer diversity of life is of inestimable value. Biodiversity has a number of functions on Earth, from providing a foundation…

As a rule, the gill area is greater in fast-moving crabs (Portunids) than in sluggish bottom dwellers; decreases progressively from wholly aquatic, to intertidal, to land species; and is greater in young crabs than in older crabs. Often the gills are enclosed in protective chambers, and ventilation is provided by specialized appendages that create the respiratory current. As in cephalopod mollusks, oxygen utilization is relatively high—up to 70 percent of the oxygen is extracted from the water…

Textbook Reference: 6.4 What Are the Active Processes of Membrane Transport? Page: 120 5. Barrier formation is only one function of the cell membrane. Describe some other functions of the membrane and discuss how the membrane is suited for those functions. Answer: Membranes function in processing energy transformation and in the organization of chemical reactions. Integral and peripheral proteins contribute to these functions. The membrane serves as a holding site for the catalytic enzymes…