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level: The Four Types of Tissues

Questions and Answers List

4-1

level questions: The Four Types of Tissues

Question	Answer
List the four types of tissues in the human body?	1. Epithelial Tissue 2. Connective Tissue 3. Muscle Tissue 4. Neural Tissue
Covers exposed surfaces, lines passageways, forms glands?	Epithelial Tissue
Fill internal spaces, supports, transports, stores energy?	Connective Tissue
Contracts to produce movement?	Muscle Tissue
Carries information in the form of electrical signals?	Neural Tissue
What tissue are these functions? 1. Provide physical protection 2. Controls permeability 3. Provide sensation 4. Produces Specialized Secretions	Epithelial Tissue
What tissue are these functions? 1. Establishing a structural framework for the body 2. Supporting, surrounding, and interconnecting other types of tissue 3. Protect and maintain positions of internal organs 4. Provide rotes for blood vessels, lymphatic vessels, and nerves 5. Transport fluids and dissolved materials 6. Defending the body from invading microorganisms 7. Storing energy reserves	Connective Tissue
What tissue are these functions? Elongated cells that are specialized to contract and produce movement?	Muscle Tissue
What tissue are these functions? 1. Concentrated in the brain, spinal cord, and nerves 2. Sensing the internal or external environment 3. Conducting signals through the body (electrical impulses) 4. Processing information and controlling responses	Nervous Tissue
What are the layers on top of a basement membrane called?	Epithelia
Collection of epithelial tissue forms what?	Glands
What are these characteristics of? 1. Polarity 2. Cellularity 3. Attachment 4. Avascularity 5. Regeneration	Epithelia
Where is the Apical Surface?	This is the "free" (unattached surface)
Where is the Lateral Surface?	Attachment along the "sides" of the cell to neighboring epithelial cells
Where is the Basal Surface?	Attachment along the "bottom" of the epithelial cells to deeper cells or tissues at the basement membrane (has two layers)
Transmembrane proteins that function to connect large areas of plasma membrane?	CAMs (Cell Adhesion Molecules)
What are held together by channel proteins called connexons, and forms an opening between cells?	Gap Junctions
What is located on the lateral surface (but next to the apical end of the cells)?	Tight Junctions
What forms a band that encircles the cell and binds it to neighboring cells?	Adhesion Belt
What is strong, durable connections, like a "spot weld", help cells endure the mechanical stress (movement)?	Desmosomes
What ties adjacent cells together along the lateral surfaces?	Spot Desmosomes
What attaches cells to the basement membrane?	Hemidesmosomes
All epithelia lack blood vessels is called what?	Avascularity
Epithelial cells are continually being replaced for the maintenance and repair of epithelial tissue is called what?	Regeneration
Cells are replaced by the division of what and is located next to the basement membrane?	Germinative Cells (Stem Cells)
Where is the Cilia located and what does it do?	Move fluid
Where is Microvilli located and what does it do?	Increases absorption or secretion
Where is the Tight Junction located?	Located on the lateral surface
Where is the Adhesion Belt located?	Deep to the Tight Junction
Where are the Gap Junctions located?	Found in the epithelia
Where are Spot Desmosomes located?	Along the lateral surfaces
Where is Hemidesmosomes located?	On the Basement Membrane
Adjacent to and secreted by the epithelia and it has a clear, thin layer that acts as a filter is called what?	Basal Lamina
Adjacent to and secreted by the deeper connective tissues and has a dense layer with thick fibers that provides strength and filtration is called what?	Reticular Lamina