Cricks Ch 4 Tissue Flashcards
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| Name the 4 classes of tissue found in the human body? | epithelial, connective, muscular, nervous
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| Where are epithelial tissues found? | Covering and lining the internal organs, also makes up the glands found in internal organs.
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| What is the apical surface of epithelial tissue? | The outermost layer of cells- they are exposed to the lumen of the cells
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| What is the basement membrane of epithelial tissue? | The deepest layer of cells, these attach to the connective tissue that supports the structure.
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| How do epithelial tissues get their blood supply? | Blood moves to epithelial tissues by DIFFUSION, they have no direct blood supply.
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| Do epithelial tissues have nerve supply? | Yes, even though arteries and veins dont reach these cells, nerves do.
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| How are epithelial tissues different from most body cells? | They reproduce rapidly (you get an brand new gut lining every 72 hours.)
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| What are the 4 functions of epithelial tissues? | protection, secretion, absorption, excretion
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| What are the 3 types of epithelial tissues- based on their shape? | cuboidal, squamous, columunar
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| What do microvilli do? | Absorb substances into the cell
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| What do cilia do? | Move in wavelike fashion to move mucus or fluids?
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| Why are squamous cells flat and thin? | So that fluids can move through them
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| What are stratified epithelial cells used for? | They cover areas of wear and tear.
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| What happens when apical cells are worn off of stratified epithelium? | Cells from deeper in the tissue migrate to the top- replacing the lost tissue
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| Why does Mr. Crick spend hours making flashcards and tutorials? | To make it easier for YOU to be successful.
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| The term squamous means ___ | flat
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| What type of epithelial cells are flat, and arranged like floor tile, 1 cell thick? | Squamous
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| What form of epitlehial cell is as tall as it is wide, forming a cube chape? | Cuboidal
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| Water, blood and nutrients can diffuse across a squamous cell because the cell is ______ | thin
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| What fingerlike appendage moves mucous across the surface of the cell | cilia
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| What fingerlike appendage increases the surface area of the cell for the purposes of absorbing and secreting substances? | microvilli
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| What lab tests looks for pre-cancerous cells in the female cervix? | Pap smear
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| What is the function of glandular epithelial cells? | secrete substances
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| Where do exocrine glands send their secretions? | outside of the body via ducts
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| Where do endocrine glands send their secretions? | into the bloodstream or into the interstitial fluid
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| What is interstitial fluid? | Fluid that bathes and surrounds each cellq
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| What do goblet cells do? | they are the cells that secrete substances in glandular epithelium
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