ANP 1111-TISSUES EXAM QUESTIONS WITH
DETAILED VERIFIED ANSWERS
what are the primary tissue types?
1. Epithelial
2. Connective
3. Muscle
4. Nervous
Why do we need different types of tissues?
- they are specialized cells that are able to divide labor
-on a larger scale (organ level) they are able to cooperate and work as a whole
Histology
study of tissues and their cellular organization
what is epithilial tissue
a sheet of cells that covers a body surface or lines a body cavity
CREATES BOUNDARIES
functions of epithelia
1) provide protection (mechanical, chemical and infectious)
2) absorption
3) filtration
4) excretion
5) secretion
6) sensory reception
what are the 5 special structures of epithelial tissue?
1) Polarity: apical and basal surfaces
2) Specialized contacts: tight junctions and desmosomes
3) supported by connective tissue: Basement membrane is composed of a basal lamina siting on
, top of a reticular lamina
4) Innervated but avascular
5) regeneration: high regenerative capacity
What is basal lamina
underlying supportive sheet of primarily glycoproteins
what is reticular lamina
collagen fibers
what are the different types of epithielial cells
cell shape-squamous(flat), cuboidal(cube ish), columnar(skinny and tall)
Number of layers-Simple (one layer) epithelia and stratified (many layers)
what is simple squamous epithelium
thin and permeable used for filtration, diffusion (endothelium and in the kidney and lungs)
simple cuboidal epithelium
secretion and absorption (in kidney tubules and small glands)
simple columnar epithelium
secretion and absorption (GI tract)
pseudostratified (ciliated) columnar epithelium
a single layer (respiratory tract where cilia and mucus secretion are local specializations but has
the appearance of a stratified epithelium
what is the structure of stratified squamous epithelium and give examples
protective role; basal cells cuboidal and constantly undergo mitosis to keep regenerating the later
from below
transitional epithelium
DETAILED VERIFIED ANSWERS
what are the primary tissue types?
1. Epithelial
2. Connective
3. Muscle
4. Nervous
Why do we need different types of tissues?
- they are specialized cells that are able to divide labor
-on a larger scale (organ level) they are able to cooperate and work as a whole
Histology
study of tissues and their cellular organization
what is epithilial tissue
a sheet of cells that covers a body surface or lines a body cavity
CREATES BOUNDARIES
functions of epithelia
1) provide protection (mechanical, chemical and infectious)
2) absorption
3) filtration
4) excretion
5) secretion
6) sensory reception
what are the 5 special structures of epithelial tissue?
1) Polarity: apical and basal surfaces
2) Specialized contacts: tight junctions and desmosomes
3) supported by connective tissue: Basement membrane is composed of a basal lamina siting on
, top of a reticular lamina
4) Innervated but avascular
5) regeneration: high regenerative capacity
What is basal lamina
underlying supportive sheet of primarily glycoproteins
what is reticular lamina
collagen fibers
what are the different types of epithielial cells
cell shape-squamous(flat), cuboidal(cube ish), columnar(skinny and tall)
Number of layers-Simple (one layer) epithelia and stratified (many layers)
what is simple squamous epithelium
thin and permeable used for filtration, diffusion (endothelium and in the kidney and lungs)
simple cuboidal epithelium
secretion and absorption (in kidney tubules and small glands)
simple columnar epithelium
secretion and absorption (GI tract)
pseudostratified (ciliated) columnar epithelium
a single layer (respiratory tract where cilia and mucus secretion are local specializations but has
the appearance of a stratified epithelium
what is the structure of stratified squamous epithelium and give examples
protective role; basal cells cuboidal and constantly undergo mitosis to keep regenerating the later
from below
transitional epithelium
