Back to notes
Describe the properties and functions of simple squamous epithelium.
Press to flip
Simple squamous epithelium is thin, facilitating passive diffusion and filtration.
Explain the difference between exocrine and endocrine glands derived from epithelium.
Exocrine glands secrete externally through ducts, whereas endocrine glands are ductless and release hormones into the bloodstream.
Identify the primary functions of epithelial tissue.
The primary functions include absorption, secretion, protection, sensory reception, and filtration.
What distinguishes epithelial tissue from other tissue types?
Epithelial tissue forms continuous sheets without intercellular spaces and exhibits polarity, with distinct apical and basal surfaces.
How do microvilli and cilia differ in their structure and function on epithelial cells?
Microvilli increase surface area for absorption, while cilia are motile and move substances across epithelial surfaces.
How are epithelial tissues classified?
Epithelial tissues are classified based on the number of cell layers (simple vs. stratified) and the shape of the cells (squamous, cuboidal, columnar).
Distinguish between the roles of simple cuboidal and columnar epithelia.
Simple cuboidal and columnar epithelia primarily function in secretion and absorption.
What adaptations allow transitional epithelium to function in the urinary system?
Transitional epithelium allows stretching, adapting to changes in bladder volume.
What are the components that make up tissues?
Tissues are composed of cells, fibers, and fluid.
How are multicellular exocrine glands classified?
Multicellular exocrine glands are classified by duct structure (simple or compound) and the shape of the secretory unit (tubular, alveolar).
What structural feature supports epithelial tissue at the basal surface?
The basal lamina, a non-cellular support layer, supports epithelial tissue at the basal surface and acts as a filter.
What is the significance of tissue regeneration in epithelial tissue?
Epithelial tissue's high regenerative capacity is significant as it allows rapid replacement of damaged or lost cells.
Summarize the hierarchy of cellular organization leading to tissue formation.
Cells group together to form tissues, which then form organs.
What is the defining feature of pseudostratified epithelium?
Pseudostratified epithelium appears stratified due to varying cell heights but is actually a single layer.
Illuminate the role of cell junctions in epithelial tissue integrity.
Cell junctions such as tight junctions, adherens junctions, desmosomes, and gap junctions hold cells together, prevent passage between cells and allow communication.
Previous
Next