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4 Types of Tissue
Epithelial: Covers
Connective: Supports
Muscle: Produces movement
Nerve: Controls
Functions of the Epithelial Tissue
Protections
Absorbtion
Filtration
Excretion
Secretion
Sensory reception
Functions of the Connective Tissue
Binding and Support
Protecting
Insulating
Storing reserve fuel
Transporting Substance (blood)
Special Characteristics of the Epithelial Tissue
Polarity between…
—apical layer may be smooth, slick, with microvilli, and cilia
—basal layer is noncellular basal lamina
Special Contacts
Supported by connective tissues
—Reticular lamina
—Basement membrane
Avascular, but innervated
—nourished by diffusion from underlying connective tissues
—supplied with nerve fibers
Regeneration
—stimulated by loss of apical-basal polarity
Special Characteristics of the Connective Tissue
Varying degrees of vascularity
Extracellular matrix
CT Support of Epithelium
Reticular lamina
Basement membrane
Glandular Epithelium
Multicellular (simple or compound) (Merocrine, Holocrine, Apocrine) vs unicellular
Exocrine vs Endocrine