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18 Cards in this Set
- Front
- Back
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an epithelium is a sheet of closely ... cells, separating a space (lumen) from underlying tissue.
It covers all the ... of your body, both internal and external. Important in a protective nature the basal surface is adjacent to ... tissue |
apposed
surfaces connective |
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sheets of epithelial cells may be modified into tubes forming ...
absence of blood vessels within epithelial layer (with one exception in the ...) |
glands
inner ear |
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epithelium comes from what germ layer?
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any of them!
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... have only one layer of cells.
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Simple epithelia
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... have two or more cell layers. Only cells at the basal surface of the epithelia contact connective tissue.
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Stratified epithelia
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... have their nuclei arranged at different levels in the epithelium, giving a stratified appearance. However, all the cells make contact with the basal lamina.
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Pseudostratified epithelia
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Shape of superficial cells.
1. ... cells are flattened in the plane of the epithelium. 2. ... cells have heights approximately equal to width. 3. ... cells are "taller" than they are wide. 4. ... epithelia are capable of changing shape. |
Squamous
Cuboidal Columnar Transitional |
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where is the only place that you will find transitional epithelium?
It's often binucleated |
urinary system
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microvilli contain a core of ...
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actin
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Cilia contains a core of ... (Dynein)
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microtubules
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Cilia:
these specializations are longer and have a greater ... than microvilli and can be individually resolved at the light microscope level. |
diameter
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... - extremely long microvilli. Inner ears will contain multiple ...
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Stereocilia
stereocilia |
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Stereocilia: long microvillar-like structures found in the ... of the male reproductive tract and in some special sensory epithelia (like rod and cone receptors of the eye)
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epididymis
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...: a specialization of stratified squamous epithelia that are subject to abrasion or desiccation (example: epithelium covering the skin, epidermis).
Stratified squamous epithelia are usually described as being ... or .... |
Keratinization
keratinized non-keratinized |
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One type of cell that is commonly used to categorize epithelia is the ..., a mucin secreting cell found in many regions of the G.I. and respiratory tracts.
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goblet cell
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what is the layer of extracellular material between the basal surface of all epithelial cells and the underlying connective tissue?
Composed mainly of type IV collagen, laminin and heparin sulfate, a proteoglycan |
basal lamina
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A ... cell can be contained in the epithelial surface due to basil lamina
Degree of ... is described on how well it can get past the basement membrane/basal lamina. |
cancerous
malignancy |
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Attached to connective tissue by ...
Basal laminae are also present around other tissue types which are in contact with connective tissue. |
type VII collagen
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