4 types of tissues - Answer- epithelial, connective, muscle, nervous
Epithilial tissue - Answer- Attached to a basement membrane, a vascular, has
nerves, high regeneration capacity. Covers and lines insides of organs and body
cavities. Little's to no extracelluar matrix composed mostly of cells
Polarity in tissues - Answer- Meaning cells have an apical surface and a basal
surface. Apical surface is exposed.
functions of epithelial tissue - Answer- protection, selective permeability, secretions,
sensations
tight junctions - Answer- Prevent molecules from traveling between epithelial cells
adhering junctions - Answer- Microfilaments around tight junctions and deep in cell
Desosomes - Answer- Spot welds made of protein plaques
Gap junctions - Answer- Channel to allow communication
simple epithelium - Answer- Single layer of cells. Have an apical surface. Attached to
basement membrane
stratified epithelium - Answer- two or more layers of cells.
Pseudostratified epithelium - Answer- Appears to have multiple layers but all cells
are attached to basement membrane
Squamous - Answer- Flat. Wide. And somewhat irregular in shape.
Cuboidal - Answer- Square. Nuclear is usually central.
Columnar - Answer- Taller than they are wide. Nucleus is oval and located in basal
region of cell.
simple cuboidal epithelium location - Answer- Kidney tubules
nonciliated simple columnar epithelium - Answer- lines the stomach and its microvilli;
increases surface area for absorption and secretion.
ciliated simple columnar epithelium - Answer- Allow for secretion and movement of
material. Location: uterine tube
pseudostratified columnar epithelium - Answer- Collated to secret mucus. linings of
respiratory passages