Histology (Tissues)

Front

What are the functions of epithelial tissue?

Back

Protection, absorption, secretion, sensation.

Front

What are the characteristics of epithelial tissue?

Back

Cellularity, different top from bottom surface with basement membrane, no blood supply, regenerative.

Front

What are the shapes of epithelial cells?

Back

Cuboid (cube) for secretion/absorption, columnar for absorption, squamous (flat) for diffusion.

Front

What are the layers of epithelial tissue?

Back

Simple or stratified; stratified is best for protection.

Front

What is the top layer of skin composed of?

Back

Stratified squamous epithelium.

Front

What are the types of surface differentiation in epithelial tissue?

Back

Microvilli increase surface area, cilia move substances past cell, flagellum moves entire cell.

Front

What are the types of cell junctions in epithelial tissue?

Back

Desmosomes anchor cells, tight junctions make them watertight, gap junctions let particles pass to another cell.

Front

What is glandular epithelium?

Back

Cells that secrete substances; exocrine glands via ducts to body exterior, endocrine glands into the bloodstream.

Front

What is sensory epithelium?

Back

Cells that transform different stimuli into electrical signals.

Front

What is connective tissue made of?

Back

Cells and extracellular matrix, which includes fibers (collagen, elastic, reticular) and ground substance.