31 Questions
What shape does the nucleus of a squamous epithelial cell conform to?
Flattened disk
What is the shape of the nucleus of a cuboidal epithelial cell?
Spherical
What shape does the nucleus of a columnar epithelial cell take?
Elongate/Ovoid
What is the shape of the nucleus of a spherical epithelial cell?
Cuboidal
What is the characteristic of the nucleus of an epithelial cell in relation to the shape of the cell?
It conforms to the shape of the cell
Which of the following describes the shape of the nucleus of an epithelial cell?
Conforms to the shape of the cell
What is the primary function of papillae in epithelial tissues?
To increase the area of contact between epithelium and connective tissue
What is the role of proteins in the basement membrane?
To help filter substances entering the epithelium and concentrate mitogenic growth factors
What is the function of the basal lamina component of the basement membrane?
To organize proteins in the plasma membrane of epithelial cells
What is the relationship between the dense basal lamina and the reticular lamina?
The dense basal lamina is anchored to the reticular lamina
What is the location of the basement membrane in relation to the epithelium and connective tissue?
Between the epithelium and connective tissue
What is the function of the basement membrane in terms of cell-to-cell interactions?
To mediate cell-to-cell interactions involving epithelia
What is the primary function of epithelia?
To cover the external surface of the body and line internal surfaces
What is a characteristic feature of epithelial cells?
They are arranged in continuous sheets, in single or multiple layers
What is the function of the basement membrane?
To attach epithelial cells firmly to nearby connective tissue
Why do epithelia have a high capacity for renewal?
Because they are subjected to wear and tear
What is a characteristic of epithelial tissue?
It is avascular
What is the apical surface of epithelial cells exposed to?
Body cavity, lining of internal organ, or exterior of body
What is the main characteristic of simple epithelium?
It has one layer of cells.
What is the function of stratified epithelium?
It protects underlying tissue from wear.
What is the characteristic of pseudostratified epithelium?
It has one layer of cells that appears as multiple layers.
What is the shape of cells that are involved in diffusion?
Squamous
What is the shape of cells that are involved in secretion and absorption?
Cuboidal
What is the shape of cells that are involved in protecting underlying tissue?
Columnar
What is the shape of the cells in simple columnar epithelium?
Rectangular
Where are nonciliated simple columnar epithelia typically found?
Gastrointestinal tract and gallbladder
What is the function of goblet cells in simple columnar epithelium?
Secretion of mucus
What is the function of microvilli in simple columnar epithelium?
Absorption of nutrients
Where are ciliated simple columnar epithelia typically found?
Fallopian tubes, uterus, and spinal cord
What is the function of ciliated simple columnar epithelium?
Movement of substances
What is the shape of the nucleus in simple columnar epithelium?
Ovoid
Learn about the different shapes of cells and their nuclei, including squamous, cuboidal, and columnar shapes. Understand how the nucleus conforms to the shape of the cell.
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