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What is the definition of a tissue?
An aggregation of cells working together to preform a specialized activity
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What are the 4 types of tissues?
- 1. Epithelial
- 2. Connective
- 3. Muscle
- 4. Nerve
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What are the 3 kinds of Epithelial Tissues?
- 1. Simple
- 2. Stratified
- 3. Pseudo-stratified
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Another name for Epithelial tissue is what?
Epithelium
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What does Epithelial tissue cover / do?
- 1. Body surfaces
- 2. Body cavities
- 3. Forms glands
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What does Connective tissue do?
- 1. Protects body
- 2. Supports body
- 3. Binds organs together
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What does is the purpose of Muscular tissue?
Movement
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What does Nervous tissue help with?
Initiate and Transmits nerve impulses
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How is Epithelial tissue classified?
- 1. Number of layers
- 2. Shape of cell
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Simple epithelial tissue are found are found in areas with what kind of wear and tear?
Lowest wear and tear
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Squamous Simple Epithelial Tissue
Layer / Shape:
Locations:
Functions:
- Layer / Shape:
- Single layer of Flat Cells
- Locations:
- Air sacs of lungs (alveoli)
- Glomerular capsule of the kidney
- Endothelium of Heart
- Blood vessels and Lymph vessel
- Functions:
- Filtration and Absorption
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Cuboidal Simple Epithelial Tissue
Layers / Shape:
Locations:
Functions:
- Layers / Shape:
- Single layer of cube shaped cells
- Locations:
- Surfaces of the ovaries
- Tubules of the kidneys
- Functions:
- Secretion & Absorption
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Coloumnal Simple Epithelial Tissue
2 Kinds:
Layers / Shape:
Location:
Function:
- 2 Kinds:
- Ciliated and Non-Ciliated
- Layers / Shape:
- Single Layer of rectangular shaped cells
- Locations:
- Ciliated - upper respiratory track, fallopian tubes and ducts of the testies
Non-Ciliated - Stomach, small & large intestines, gall bladder, and digestive glands
- Functions:
- Ciliated -Moves mucus
- Non-Ciliated - secretion and absorbtion
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Where are "stratified epithelial" tissues found?
Areas of maximum wear and tear
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Squamous Stratified Epithelial Tissue
2 Kinds:
Layers / Shape:
Locations:
Functions:
- 2 Kinds:
- Non-Keratinized and Keratinized
- Layers / Shape:
- Many Layers and Flat shaped cells
- Locations:
- Non-Keratinized - Wet Surfaces of the body (mouth and esophagus
- Keratinized - (has Kerotin protein) - Forms outter layer of skin
- Functions:
- Non-Keratinized - Protect underlying structures
- Keratinized - Waterproofing of skin, resistance to friction, impervious to bacteria
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Cubiodal Stratified Epithelial Tissue
Layers / Shape:
Locations:
Function:
- Layers / Shape:
- Many Layers of cube shaped cells
- Locations:
- Ducts of adult sweat glands
- Functions:
- Protection of underlying structures
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Coloumnal Stratified Epithelial Tissue
Layers / Shapes:
Locations:
Functions:
- Layers / Shapes: Many layers of rectangular shaped cells
- Locations: part of the male urethra and some of the larger excretory ducts
- Functions: protection and secretion
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