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Questions and Answers
Which of the following are primary types of tissue? (Select all that apply)
Which of the following are primary types of tissue? (Select all that apply)
- Muscle tissue (correct)
- Connective tissue (correct)
- Nervous tissue (correct)
- Skin tissue
- Epithelial tissue (correct)
What is the function of nervous tissue?
What is the function of nervous tissue?
Internal communication
What muscle types are included in muscle tissue?
What muscle types are included in muscle tissue?
Skeletal, cardiac, and smooth muscles
Epithelial tissue forms boundaries between different environments, protects, secretes, absorbs, and filters. It includes the lining of the ______ organs.
Epithelial tissue forms boundaries between different environments, protects, secretes, absorbs, and filters. It includes the lining of the ______ organs.
Which of the following is NOT a characteristic of epithelial tissue?
Which of the following is NOT a characteristic of epithelial tissue?
Stratified epithelial tissue consists of one layer of cells.
Stratified epithelial tissue consists of one layer of cells.
What is the apical surface of epithelial tissue?
What is the apical surface of epithelial tissue?
What are the main functions of epithelial tissue?
What are the main functions of epithelial tissue?
Match the types of epithelial tissue to their characteristics:
Match the types of epithelial tissue to their characteristics:
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Study Notes
Body Tissues
- Tissue is a group of cells with similar structure and function.
- Four primary tissue types: epithelial, connective, nervous, and muscle.
- Epithelial tissue (epithelium) forms boundaries, protects, secretes, absorbs, and filters.
- Found lining body cavities, hollow organs, and as the outer layer of skin.
- Connective tissue supports, protects, and binds other tissues together.
- Examples include bones, tendons, and fat.
- Nervous tissue is responsible for internal communication.
- Found in the brain, spinal cord, and nerves.
- Muscle tissue contracts to cause movement.
- Skeletal muscle: attaches to bones.
- Cardiac muscle: found in the heart.
- Smooth muscle: lines the walls of hollow organs.
Epithelial Tissue Characteristics
- Cells fit closely together and form sheets.
- Rich in tight junctions and desmosomes, except for glandular tissue.
- Apical surface is the free surface of the tissue.
- Basal surface rests on a basement membrane (non-cellular layer).
- Avascular (no blood supply).
- Regenerate easily if well-nourished.
Classification of Epithelia
- Number of cell layers:
- Simple: one layer.
- Stratified: more than one layer.
- Cell shape:
- Squamous: flat and thin.
- Cuboidal: cube-shaped.
- Columnar: tall and column-shaped.
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