BIOL 2401 Exam 2 Review Questions with 100% Verified
Answers Latest Update
Question: epithelial tissue locations
Answer:
covers body surfaces, lines hollow organs, body cavities and ducts, forms glands
Question: epithelial tissue characteristics
Answer:
Lacks blood vessels, cells readily divide, cells are tightly packed, cells are polarized
(opposite ends with different functions)
Question: epithelial tissue functions
Answer:
protection, absorption, filtration, excretion, secretion, sensory reception
Question: simple epithelial tissues
Answer:
single layer of cells
Question: stratified epithelial tissues
Answer:
Involve two or more layers of cells New cells regenerate from below Basal cells cuboidal and
divide and migrate toward surface More durable than simple epithelia because protection is
the major role
Question: squamous cells
Answer:
flattened and scale-like, great for rapid diffusion
Question: cuboidal cells
Answer:
cube shaped cells
Question: columnar cells
Answer:
tall and column shaped
, Question: microvilli
Answer:
Fingerlike extensions of plasma membrane of apical epithelial cells, increase surface area,
aid in absorbtion, exist on every moist epithelia, but most dense in small intestine and
kidney
Question: Cilia
Answer:
Hairlike projections that extend from the plasma membrane and are used for locomotion of
the cell or materials it comes in contact with
Question: flagella
Answer:
whiplike tails found in one-celled organisms to aid in movement
Question: goblet cells
Answer:
a column-shaped cell found in the respiratory and intestinal epithelia, which secretes the
main component of mucus.
Question:
Answer:
Question: exocrine glands
Answer:
secrete chemical substances into ducts that lead either to other organs or out of the body
Question: holocrine secretions
Answer:
Produced by rupture of the plasma membrane, releasing the entire cellular contents into the
lumen and killing the cell (cells are replaced by rapid division of stem cells) ex: sebaceous
glands
Question: merocrine secretions
Answer:
product is released from secretory vesicles by exocytosis ex: sweat, saliva
Question: apocrine secretions
Answers Latest Update
Question: epithelial tissue locations
Answer:
covers body surfaces, lines hollow organs, body cavities and ducts, forms glands
Question: epithelial tissue characteristics
Answer:
Lacks blood vessels, cells readily divide, cells are tightly packed, cells are polarized
(opposite ends with different functions)
Question: epithelial tissue functions
Answer:
protection, absorption, filtration, excretion, secretion, sensory reception
Question: simple epithelial tissues
Answer:
single layer of cells
Question: stratified epithelial tissues
Answer:
Involve two or more layers of cells New cells regenerate from below Basal cells cuboidal and
divide and migrate toward surface More durable than simple epithelia because protection is
the major role
Question: squamous cells
Answer:
flattened and scale-like, great for rapid diffusion
Question: cuboidal cells
Answer:
cube shaped cells
Question: columnar cells
Answer:
tall and column shaped
, Question: microvilli
Answer:
Fingerlike extensions of plasma membrane of apical epithelial cells, increase surface area,
aid in absorbtion, exist on every moist epithelia, but most dense in small intestine and
kidney
Question: Cilia
Answer:
Hairlike projections that extend from the plasma membrane and are used for locomotion of
the cell or materials it comes in contact with
Question: flagella
Answer:
whiplike tails found in one-celled organisms to aid in movement
Question: goblet cells
Answer:
a column-shaped cell found in the respiratory and intestinal epithelia, which secretes the
main component of mucus.
Question:
Answer:
Question: exocrine glands
Answer:
secrete chemical substances into ducts that lead either to other organs or out of the body
Question: holocrine secretions
Answer:
Produced by rupture of the plasma membrane, releasing the entire cellular contents into the
lumen and killing the cell (cells are replaced by rapid division of stem cells) ex: sebaceous
glands
Question: merocrine secretions
Answer:
product is released from secretory vesicles by exocytosis ex: sweat, saliva
Question: apocrine secretions
