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Epithelium
WVSOM Class of 2012 Epithelium
| Question | Answer |
|---|---|
| what layer separates the epithelium from the underlying connective tissue? | basement membrane (basal lamina) |
| basal lamina and connective tissue form what? | basement membrane |
| basement membrane functions? | attachment, filtration, tissue compartmentalization, and confers cell polarity and shape |
| is basement membrane vascular? | no |
| stratified cells differ from simple cells how? | the stratified cells have multiple cells not attached to the basement membrane |
| simple squamous that lines the vascular system is called what? | endothelium |
| simple squamous that lines the body cavities is called what? | mesothelium |
| what type of simple squamous lines respiratory spaces? | pneumocytes |
| where are simple cuboidal cells located? | small ducts of exocrine glands and kidney tubules |
| where are simple columnar cells located? | small intestine and colon, gallbladder, stomach and gastric glands |
| pseudostratified ciliated columnar epithelium cells all attach where? | basement membrane |
| pseudostratified ciliated columnar epithelium cells located where? always have what feature? | trachea and bronchi lining, lining of vas deferens, epididymis; always have cilia |
| stratified cuboidal/stratified columnar are found where? | mammary, sweat glands, anorectal junction, and large ducts of exocrine glands |
| stratified squamous is found where? | epidermis, lining of oral cavity/esophagus, lining of vagina (can be keratinized or non-keratinized) |
| transitional cells found where? | renal calyces, bladder, urethra, ureter |
| endocrine glands have ducts or not? | no |
| unicellular glands are composed of a single cell; give an example: | goblet cells in tracheal epithelium |
| multicellular glands have what 2 portions? | duct and secretory portions |
| goblet cells secrete what? | mucus |
| serous secretions consist of what? example? | watery secretions rich in enzymes; parotid |
| mixed secretions make what two things? example? | mucus and serous; submandibular gland |
| serous glands stain what color? | pink |
| mucus glands stain what color? | clear |
| cells that release their contents by exocytosis? example? | merocrine; parotid gland |
| part of the secretory cell apical cytoplasm is released along with the contents? example? | apocrine; mammary gland |
| entire secretory cell and contents released? example? | holocrine; sebaceous gland |
| benign epithelial neoplasms are called what? | adenomas |
| malignant epithelial neoplasms that arise from any sheet-like or glandular epithelia? | carcinoma |
| malignant epithelial neoplasms that arise from glandular tissue? | adenocarcinoma |
| what are the primary functions of epithelium? | diffusion, transport, absorption, secretion |
| what kind of tissue lines the bowman's capsule | simple squamous |
| transformation of one cell type to another: | metaplasia |
| is metaplasia reversible? | yes |
| an abnormality in the appearance of cells indicative of an early step towardstransformation into a neoplasia: | dysplasia |
| benign epithelial neoplasm that arises from surface epithelia? | polyp |
Created by:
mhassan
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