ANP 1111-REVISION EXAM QUESTIONS
WITH DETAILED VERIFIED ANSWERS
Define tissue and demonstrate how the organization of cells into tissues contributes to
overall homeostasis
each cell benefits from homeostatic control, and contributes to its maintenance as well, providing
continuous automaticity to the body.
Why do we need different types of tissues?
individual body cells specialized; division of labour
at organ level, cooperation for organ to work as a whole
what is histology
study of tissues & their cellular organization
Define epithelial tissue and list 6 functions associated with epithelia
A sheet of cells that covers a body surface or lines a body cavity.
List the 4 primary types of tissues
epithelial, connective, muscle, nervous
what are examples of covering and lining epithelium
e.g. skin & lining of the esophagus
what glandular epithelium
e.g. sweat glands
what are functions of various epithelia?
protection, filtration, excretion, secretion, sensory reception
epithelial tissue polarity:
apical and basal surfaces, apical surface often specialized such as having microvilli or cilia
, what are the specialized contacts?
tight junctions & desmosomes; to give very strong cell to cell connection (to make sure they're
well attached) -> to avoid wear and tear damage
what is supported by connective tissue?
basement membrane
what is the basement membrane composed of?
composed of a basal lamina (underlying supportive sheet of primarily glycoproteins) siting on
top of a reticular lamina (primarily collagen fibers)
What are two important functions of the basement membrane?
- giving it a "base" "a surface" to sit on
- give some stable wiggle room
does the recticular layer of epithelial tissue have collagen?
yes
since epithelial cells are innervated (have nerves) but avascular (no small blood vessels)
how are they nourished
being a thin layer that way there's less to go through
why is epithelial tissues having a high regeneration capacity important
because they are highly mitotic
what are the three cell shapes
squamous, cuboidal, columnar
what are the two type of layers of epithelial cells
simple and stratified epithelia
what are the structure, the function and examples of simple squamous epithelium
thin & permeable - filtration, diffusion -
WITH DETAILED VERIFIED ANSWERS
Define tissue and demonstrate how the organization of cells into tissues contributes to
overall homeostasis
each cell benefits from homeostatic control, and contributes to its maintenance as well, providing
continuous automaticity to the body.
Why do we need different types of tissues?
individual body cells specialized; division of labour
at organ level, cooperation for organ to work as a whole
what is histology
study of tissues & their cellular organization
Define epithelial tissue and list 6 functions associated with epithelia
A sheet of cells that covers a body surface or lines a body cavity.
List the 4 primary types of tissues
epithelial, connective, muscle, nervous
what are examples of covering and lining epithelium
e.g. skin & lining of the esophagus
what glandular epithelium
e.g. sweat glands
what are functions of various epithelia?
protection, filtration, excretion, secretion, sensory reception
epithelial tissue polarity:
apical and basal surfaces, apical surface often specialized such as having microvilli or cilia
, what are the specialized contacts?
tight junctions & desmosomes; to give very strong cell to cell connection (to make sure they're
well attached) -> to avoid wear and tear damage
what is supported by connective tissue?
basement membrane
what is the basement membrane composed of?
composed of a basal lamina (underlying supportive sheet of primarily glycoproteins) siting on
top of a reticular lamina (primarily collagen fibers)
What are two important functions of the basement membrane?
- giving it a "base" "a surface" to sit on
- give some stable wiggle room
does the recticular layer of epithelial tissue have collagen?
yes
since epithelial cells are innervated (have nerves) but avascular (no small blood vessels)
how are they nourished
being a thin layer that way there's less to go through
why is epithelial tissues having a high regeneration capacity important
because they are highly mitotic
what are the three cell shapes
squamous, cuboidal, columnar
what are the two type of layers of epithelial cells
simple and stratified epithelia
what are the structure, the function and examples of simple squamous epithelium
thin & permeable - filtration, diffusion -
