A&P 1 Lab #3 Flashcards
Simple epithelia
A single cell layer
typically found where absorption, secretion, and filtration occur
Four categories of tissues and their functions
Nervous tissue
Muscle tissue
epithelial tissue
connective tissue
Stratified epithelia
Two or more layers of cells stacked on top of each other
common in high abrasion areas ex: skin, lining of mouth
squamous epithelium
Cells that are flattened and scalelike
cuboidal epithelium
Cells that are boxlike or cubelike
columnar epithelial
Cells that are tall and column-like
Simple squamous epithelium
Lung
Function: allows materials to pass by diffusion and filtration in sites where protection is not important; secretes lubricating substances in serosea
Simple cuboidal epithelium
Thyroid, kidney tubules
Function: secretion and absorption
Simple columnar epithelium
Stomach, rectum, uterus, small bronchi
Function: absorption; secretion of mucus, enzymes. Ciliated type propels mucus
Stratified squamous epithelium
Skin, mouth, esophagus
Function: protects underlying tissue in areas subjected to abrasion
Transitional epithelium
Urinary bladder
Function: stretches readily, permits stored urine to descend urinary organ
Pseudostratified ciliated columnar epithelium
Trachea
Function: secrete substances, particularly mucus; propulsion of mucus by ciliary action
Areolar connective tissue
Various locations
Has no obvious structure like layers or rows
Substances outside of cell are unarranged fibers (extracellular matrix)
Adipose tissue
Hypodermal layer of skin
Fat
Reticular connective tissue
Spleen/liver