learning anatomy and physiology of pseudostratified columnar epithellum under the microscopic.

anatomy background biological biology bowel cell cells ciliated columnar connective cytology digestive eosin epithelial epithelium epithellum gastric gastrointestinal gland gut histologic histological histology human intestinal intestine laboratorynn lamina learning medical medicine medullary micrograph microscope microscopic mucosa pattern photomicrograph physiology pits pseudostratified respiratory section simple skin stain stomach surface sweat system tissue trachea urinary villus