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epithelial cells

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ilm1993's version from 2017-06-08 12:54

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Question Answer
3 epithelial cell typessquamous, cuboidal, columnar
define simple epitheliumsingle cell-layer
define stratified epitheliummulti-cell layer
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Question Answer
general characteristics of epithelium cells?Supported by connective tissue (reticular and basal laminae), Avascular, regenerative
general function of stratified epithelium?protection
general functions of simple epithelium?absorption/ secretion/ filtration/ diffusion
general function of endothelium?lines inside of organs & blood vessels
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Question Answer
where is simple squamous epithelium found?endothelium: capillaries, alveolar walls; meant for diffusion and filtration
where is simple cuboidal epithelium found?gland ducts, kidney tubules; meant for absorption
where is simple columnar epithelium found?stomach & gut; meant for absorption and secretion
What are goblet cells?modified simple columnar epithelial cell whose function is to secrete gel-forming mucins
where is stratified squamous epithelium found?the skin
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Question Answer
Components of connective tissue?connective tissue, cartilage, bone, blood
What are the functions of connective tissues?binding and supporting, protection, insulation, and transportation
What are mesenchymal cells?multipotent stromal cells that can differentiate into a variety of cell types
What do mesenchymal cells turn into?osteoblast, fibroblast, chondroblast, blood cells
function of osteoblasts?make bone
function of fibroblasts?make connective tissue
function of chondroblasts?make cartilage
function of hematopoietic stem cells?make blood
-blast =stem cell, actively producing matrix
-cyte =mature cell, doing housekeeping
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Question Answer
what is the source of the extracellular matrix of connective tissue?secreted by cells of connective tissue
what is the extracellular matrix of connective tissue made of?ground substance + fibers
what is the ground substance of connective tissue?glue that holds the matrix together; interstitial fluid
3 types of connective tissue fibers?collagen, elastic fibers, reticular fibers
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Question Answer
Adipose tissue?local fat deposits
Areolar?wraps and cushions organs; wide distributed in body
Reticular?forms storm that supports other cell types; in lymph nodes and spleen
Dense Regular?fibroblasts; collagen with little elastic; tendons and ligaments
Dense irregular? fibroblasts; collagen with little elastic; found in organ cupsules
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Question Answer
Hyaline Cartilage?contain chondrocyte, Supports, reinforces, cushions, and resists compression
Where can you find hyaline cartilage?bones, nose, trachea, and larynx
Elastic cartilage?more elastic fibers, has more flexibility. Outer ear
Fibrocartilage?thick collagen fibers, absorbs compression shock
Where is fibrocartilage found?intervertebral discs, the pubic symphysis, and in discs of the knee joint
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Skeletal muscle tissue?obvious striation, initiates and controls voluntary movement; skeletal muscles that attach to bones/ skin
Cardiac muscle tissue?Branching, striated, uninucleate cells interlocking at intercalated disc, propels blood into the circulation
Smooth Muscle tissue?spindle-shaped cells with central nuclei that have no striations
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Cutaneous epithelial membrane?skin
Mucous epithelial membrane?lines body cavities open to exterior
Serious epithelial membranes?moist membranes found in closed ventral body cavity
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Ectoderm?nervous system and skin
Mesoderm?lining, mesenchyme, vessels
Endoderm?lining of gut
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