Endothelium Notes

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18 Terms

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Epithelial Tissue

Forms boundaries and covers surfaces, separating the body from the external environment.

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Muscle Tissue

Facilitates contraction for movement.

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Nervous Tissue

Responsible for communication and control within the body.

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Connective Tissue

Offers support and connection between other tissues.

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Barrier Formation

A function of epithelial tissue that separates the body from the external environment.

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Exocrine Glands

Glands that secrete substances through ducts, such as mucus and sweat.

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Endocrine Glands

Ductless glands that release hormones directly into the bloodstream.

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Tight Junctions

Cell junctions that seal spaces between cells to prevent the passage of substances.

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Avascular

Describes tissues that lack blood vessels and receive nutrients through diffusion.

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Basal Surface

The surface of epithelial cells that attaches to the basement membrane.

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Apical Surface

The surface of epithelial cells that faces the lumen or external environment.

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Small Intestine

An example of epithelial tissue that specializes in nutrient absorption.

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Gastric Gland

Specialized epithelial cells that generate and secrete acids in the stomach.

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Continuous Capillaries

Capillaries characterized by tight junctions that act as barriers.

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Fenestrated Capillaries

Capillaries with small pores for increased permeability.

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Transitional Epithelium

A specialized form of epithelium that can expand and contract.

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Cell Layers

Criteria used to classify epithelial tissue as simple (one layer) or stratified (multiple layers).

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Cell Shape

Criteria used to classify epithelial cells as squamous (flat), cuboidal (cube-shaped), or columnar (column-shaped).