Body Tissues Part 1 Flashcards
Levels of Organization in Various Animals
Protoplasmic, cellular, tissue, organ and system level
Are groups of similar cells with a common structure and function
Tissues
4 types of tissues:
Epithelial
Connective
Muscle
Nervous
Single or multiple later of flattened, cube-shaped, or columnar cells
Epithelial
Cover interior and exterior surfaces of organs; protection; secretion; absorption
Epithelial
Cells scattered in prominent extracellular matrix
Connective
Support, adhesion, insulation, attachment, and transportation
Connective tissue
Elongated cells that contract when stimulated
Muscle tissue
Cells that transmit electrochemical impulses
Nervous tissue
Are classified on the basis of shape and number if layers present
Epithelial tissues
Separates epithelial tissue from underlying tissues
Basement membrane
Shape of the cells in epithelial cell layers
Squamous, cuboidal, columnar
Consists of a single layer of tightly packed, flattened cells with a disc-shaped nucleus
Simple squamous epithelium
Location of simple squamous epithelium
Air sacs of the lungs, kidney glomeruli, blood vessels
Function of Simple Squamous Epithelium
Allows passage of materials by diffusion and filtration
Consists of a single layer of elongated cells
Simple columnar epithelium