Anatomy 337 Module 1 Exam
Questions and Answers
epithelial tissue - -sheets of cells that line all surfaces of the body
- functions of epithelial tissue - -protection, permeability, diffusion,
absorption, secretion, sensation, surface parallel transport
- Characteristics of Epithelial tissue - --avascular (no blood vessels)
-highly cellular
-regenerative
-polar (differences between apical, free surface, and basal surface)
- basement membrane - -sits beneath basal surface and anchors cells to
underlying tissue. Composed of basal lamina and reticular lamina
- Cillia - -extensions from apical surface that aid with surface parallel
transport by beating
- microvilli - -extensions that increase surface area and help with
transcellular transport within the cell
- intercellular junctions - -hold cells together or allow them to interact
- tight junction - -holds cells together, prevent substances from moving
between; selective barrier
- adhering junction - -acts like a belt to hold epithelial cells together for
support and stability
- desmosome - -holds cell together like a push button on a jacket to provide
support and stability
- gap junction - -forms an intracellular passageway between membranes of
adjacent cells to facilitate movement of small molecules and ions. Allows
electrical and metabolic coupling of cells
- squamous - -flattened and thin shaped epithelial cells
- cuboidal - -cube or box shaped epithelial cells
- columnar - -rectangular cube shaped epithelial cells
- simple cell layers - -single layer of cells
Questions and Answers
epithelial tissue - -sheets of cells that line all surfaces of the body
- functions of epithelial tissue - -protection, permeability, diffusion,
absorption, secretion, sensation, surface parallel transport
- Characteristics of Epithelial tissue - --avascular (no blood vessels)
-highly cellular
-regenerative
-polar (differences between apical, free surface, and basal surface)
- basement membrane - -sits beneath basal surface and anchors cells to
underlying tissue. Composed of basal lamina and reticular lamina
- Cillia - -extensions from apical surface that aid with surface parallel
transport by beating
- microvilli - -extensions that increase surface area and help with
transcellular transport within the cell
- intercellular junctions - -hold cells together or allow them to interact
- tight junction - -holds cells together, prevent substances from moving
between; selective barrier
- adhering junction - -acts like a belt to hold epithelial cells together for
support and stability
- desmosome - -holds cell together like a push button on a jacket to provide
support and stability
- gap junction - -forms an intracellular passageway between membranes of
adjacent cells to facilitate movement of small molecules and ions. Allows
electrical and metabolic coupling of cells
- squamous - -flattened and thin shaped epithelial cells
- cuboidal - -cube or box shaped epithelial cells
- columnar - -rectangular cube shaped epithelial cells
- simple cell layers - -single layer of cells
