Epithelial Basics
This tissue type is cell-rich and matrix-poor.
What is epithelial tissue?
This simple epithelium is found in the alveoli of lungs and allows for rapid gas exchange.
What is simple squamous epithelium?
These cells store fat.
What are adipocytes?
The strongest and most abundant fiber in connective tissue.
What are collagen fibers?
Transitional epithelium is found in this organ.
What is the urinary bladder?
Epithelial tissues are avascular, meaning they lack these.
What are blood vessels?
This stratified epithelium can be keratinized or non-keratinized.
What is stratified squamous epithelium?
These immune cells release histamine during allergic reactions.
What are mast cells?
These fibers allow tissues to stretch and recoil.
What are elastic fibers?
Dense regular connective tissue is found in these structures.
What are tendons and ligaments?
The side of epithelial tissue facing the external environment or lumen is called the ______ surface.
What is the apical surface?
Which epithelium type appears to be stratified but all cells touch the basement membrane?
What is pseudostratified columnar epithelium?
These cells make fibers and ground substance of the ECM.
What are fibroblasts?
These fibers form a delicate, supportive mesh in soft tissues.
What are reticular fibers?
Simple squamous epithelium is found lining these blood vessels.
What are capillaries (endothelium)?
Epithelial tissue always sits on this supportive layer made of connective tissue.
What is the basement membrane?
This rare epithelium lines the urinary bladder and can stretch.
What is transitional epithelium?
These cells engulf debris and help with immunity.
What are macrophages?
The non-living material between connective tissue cells is called the ______.
What is the extracellular matrix (ECM)?
Non-keratinized stratified squamous epithelium lines this passage where food goes down.
What is the esophagus?
List the three main shapes of epithelial cells.
What are squamous, cuboidal, and columnar?
Name two places where simple columnar epithelium is found.
What is the small intestine and uterine tubes? (also stomach, gallbladder, large intestine)
These are antibody-secreting cells derived from B-lymphocytes.
What are plasma cells?
Compare epithelial vs connective tissue in terms of cell-to-matrix ratio.
Epithelial = cell-rich, matrix-poor
Connective = matrix-rich, cell-poor.
Reticular connective tissue is found in these immune system organs (name at least two).
What are the lymph nodes, spleen, and bone marrow? (any 2 are correct)