Bio 168 Tissues Exam Questions and
Answers 100% Pass
Tissues - ✔✔a group of specialized cells and extracellular material around them.
Histology - ✔✔microscopic study of tissues
Epithelial tissue characteristics - ✔✔Lacks blood vessels (materials must move by
diffusion from underlying Connective Tissue)
Covers body surface and forms glands
Very little extracellular matrix
Has distinct tissue surfaces (Free (apical), nasal, lateral
Cells connect to surrounding cells and extracellular matrix
High regeneration capacity
basement membrane - ✔✔Connects basal later to underlying tissues.
Consists of two layers
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, Made of specialized extracellular material secreted by the epithelial cells (Collagen,
Glycoproteins, proteoglycans)
Supports and guides cells migration during tissue repair
Porous to allow movement of materials to and from the epithelial cells above.
Epithelial Tissue Functions - ✔✔protection, barrier, secretion, passage of substances,
absorption
Classification of Epithelia Cells - ✔✔Squamous: flat, scare like
Cuboidal: equal in height and width
Columnar: taller than wide
Simple squamous - ✔✔single layer of flat cells
Functions: Diffusion/filtration
Location: air sacs in lungs, lining of heart, blood and lymphatic vessels
simple cuboidal - ✔✔single layer of cube shaped cells
Function: secretion/absorption
Location: Ducts and secretory portions of small glands, kidney tubules.
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Answers 100% Pass
Tissues - ✔✔a group of specialized cells and extracellular material around them.
Histology - ✔✔microscopic study of tissues
Epithelial tissue characteristics - ✔✔Lacks blood vessels (materials must move by
diffusion from underlying Connective Tissue)
Covers body surface and forms glands
Very little extracellular matrix
Has distinct tissue surfaces (Free (apical), nasal, lateral
Cells connect to surrounding cells and extracellular matrix
High regeneration capacity
basement membrane - ✔✔Connects basal later to underlying tissues.
Consists of two layers
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, Made of specialized extracellular material secreted by the epithelial cells (Collagen,
Glycoproteins, proteoglycans)
Supports and guides cells migration during tissue repair
Porous to allow movement of materials to and from the epithelial cells above.
Epithelial Tissue Functions - ✔✔protection, barrier, secretion, passage of substances,
absorption
Classification of Epithelia Cells - ✔✔Squamous: flat, scare like
Cuboidal: equal in height and width
Columnar: taller than wide
Simple squamous - ✔✔single layer of flat cells
Functions: Diffusion/filtration
Location: air sacs in lungs, lining of heart, blood and lymphatic vessels
simple cuboidal - ✔✔single layer of cube shaped cells
Function: secretion/absorption
Location: Ducts and secretory portions of small glands, kidney tubules.
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