A&P I - Tissues and Histology
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| define "tissue" | a group of cells with similar function and structure
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| what are the four types of tissue | epithelial tissue, connective tissue, muscle tissue, and nervous tissue
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| list the 5 characteristics of epithelial tissue | polarity, specialized contacts, basement membranes, vascular but innervated, regeneration
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| where is epithelial tissue found | pretty much everywhere, especially anything that touches the outside (GI tract and skin)
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| the epithelial tissues are classified on 2 criteria - what are they? what are the names we use to describe these criteria? | stratified and simple
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| where in the body is simple squamous ET found | alveoli in lungs & glomerulus capsue (kidneys)
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| where in the body is simple cuboidal found | tubules of the kidneys
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| the upper/free surface of the epithelial tissue | apical surface
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| what is the bottom layer/surface of the epithelial tissue | basal surface/lamina
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| what does it mean that epithelial tissue is avascular | epithelial tissue does not have any blood vessel innervation of it's own
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| how does the blood vessel receive nutrients even though it is avascular | nutrients diffuse from the basement membrane
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| why is it important that the epithelial tissue in the lung alveolar is simple instead of stratified | the shorter the distance the faster the gasses are allowed to diffuse
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| why is skin made up of stratified epithelial tissue | protection
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| name two unique epithelial tissue that are not stratified or simple | pseudostratified and transitional
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| where is pseudostratified epithelial tissue founds | respiratory system (trachea)
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| where is transitional epithelial tissue found | bladder (urinary system)
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| what is an endocrine gland | a gland that is ductless and releases hormones (chemicals) in to the extracellular fluid
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| what are exocrine glands | have ducts and empty their contents (sweat/mucus) on the bodily surfaces
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| what is mesothelium and where is it found | simple squamous epithelium found on the serous membrane
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| what is endothelium and where is it found | simple squamous epithelium that lines the inside of a blood vessel.
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| name the type of epithelial tissue founds in the oral cavity | moist (non-keratinized) stratified squamous epithelium
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| name the epithelial tissue in the trachea | ciliated pseudostratified columnar epithelium
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| name the epithelial tissue in the capillaries | simple stratified epithelium (endothelium)
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| name the type of epithelial tissue found in the digestive tract | simple columnar epithelium (intestines), non-keratinized (moist) stratified epithelial tissue (esophagus), simple stratified (inner lining of stomach)
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| name the type of epithelial tissue found in the lungs alveoli | simple stratified epithelium
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| name the type of epithelial tissue found in the kidney tubules | simple cuboid epithilium
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| name the type of epithelial tissue in the exocrine glands | stratified cuboidal
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| name the type of epithelial tissue in the urinary bladder | transitional epithelium
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| what is the function of the the exocrine pancreas | to buffer the stomach acid in the intestine
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| what is the function of the endocrine pancreas | (islets of lagerhans/ pancreatic islets) release of hormones (alpha-glucagon and beta-insulin)
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| where would you find keratinized stratified squamous | skin
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| where would you find non-keratinized (moist) stratified squamous | buccal/oral cavity, tongue, and esophagus
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| what type of gland would release its secretion through exocytosis without the gland itself | merocrine glands
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