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Tissue

QuestionAnswer
What is a tissue? A group of specialized cells and cell products that perform specific functions.
What is histology? The study of tissues.
What are the four major tissue types? Epithelial, connective, muscle, and nervous tissue.
Main functions of epithelial tissue? Protection, permeability control, sensation, and secretion
Five key characteristics of epithelium? Polarity, cellularity, basement membrane attachment, avascularity, regeneration
What is the apical surface? The exposed surface of an epithelial cell.
Which junction prevents water passage? Tight junctions.
Which junction allows ion passage? Gap junctions.
What are desmosomes? Strong cell-to-cell connections.
Two layers of basement membrane? Basal lamina and reticular lamina.
How are epithelia classified? By layers and cell shape.
Function of simple squamous epithelium? Absorption and diffusion.
Where is stratified squamous epithelium found? Skin surface, mouth, esophagus, anus.
Role of transitional epithelium? Allows stretching; found in urinary bladder.
What is pseudostratified ciliated columnar? Respiratory tract epithelium that moves mucus with cilia.
Endocrine vs exocrine? Endocrine: hormones to blood. Exocrine: secretions via ducts.
Merocrine secretion? Exocytosis release.
Apocrine secretion? Apical cytoplasm shedding.
Holocrine secretion? Whole cell bursts to release product.
Created by: user-2042233
 

 



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