NURS 106 Lecture Notes - Lecture 6: Nephron, Pulmonary Pleurae, Major Trauma
17 Sep 2018
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Document Summary
Closely bound cells that form a continuous sheet. Has an upper (apical) and lower (basal) side. Avascular (not supplied with blood vessels) have nutrients either absorbed or diffused from the apical or basal surface. Cells of different shapes (squamous, cuboidal, columnar and transitional) Pseudostratified: single layer thick, and all cells are connected to the basal membrane, but not all of the cells reach the apical surface (nuclei are different heights so they can look multilayered) Covers all exposed surfaces, lining hollow organs, internal passages, cavities and ducts. Simple squamous - alveoli, serous membranes, blood vessels. Stratified squamous - skin, anus, esophagus, oral cavity (usually located in parts of the body vulnerable to physical trauma) Stratified cuboidal - very rare, only found in the ducts of some sweat glands. Simple columnar - digestive tracts and uterine tubes. Stratified columnar - very rare, only in some salivary glands. Transitional cells - bladder and unterer: connective tissue.
