25 Questions
What is the main function of stereocilia?
Absorption
Where are stereocilia typically found?
Male reproductive tract
What is the characteristic adaptation of the skin for protection?
Keratin layer
Which of the following has the thickest keratin layer?
Sole of the foot
What type of epithelium is present in the epididymis?
Pseudostratified columnar epithelium
What is the primary function of stratified squamous epithelium?
Protection against abrasion
What happens to cells lost by abrasion at the surface of stratified epithelium?
They are replaced by cells underneath
What is the location of cell division in stratified epithelium?
Near the basement membrane
What is the classification of stratified epithelium based on?
Cell shape of the superficial layer
What is the morphology of the top layer in stratified squamous epithelium?
Flat
What shape are the lower cells in stratified squamous epithelium?
Roughly polygonal
As cells migrate towards the surface in stratified squamous epithelium, what happens to their shape?
They become flattened
Where is stratified squamous epithelium typically found?
In areas requiring protection
What type of epithelium is found in the mouth, esophagus, and vagina?
Stratified squamous non-keratinized epithelium
What characteristic is retained by the flattened cells of the epithelium surface layer in stratified squamous non-keratinized epithelium?
Their nuclei
What is the main function of the transitional epithelium?
To protect the underlying tissues from osmotic damage
What is the name given to the transitional epithelium due to its presence in the urinary system?
Urinary epithelium
What is the characteristic of the superficial layer of the urothelium when the bladder is empty?
It has umbrella cells
How does the shape of the surface cells of the transitional epithelium change when the epithelium is stretched?
They become flatter
What is the reason transitional epithelium received its name?
Because it represents a transition stage between stratified and squamous epithelium
What is the main function of cilia on the surface of epithelial cells?
To move materials or objects over the surface of the epithelium
Which type of cells lack cilia in the epithelium?
Goblet cells
What is the primary function of microvilli on the surface of epithelial cells?
To increase the surface area of the cell for absorption
Where are microvilli often referred to as a 'brush border'?
In the small intestine and proximal convoluted tubule of the kidney
What is the shape of microvilli on the surface of epithelial cells?
Finger-like projections
Learn about stereocilia, modified microvilli found in the male reproductive tract, and their functions. This quiz also covers epithelial tissue, including pseudostratified columnar epithelium and keratinization.
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