Lecture 5 Flashcards
Epithelium
Epithelium functions
- Protection
- Absorption
- Secretion
- Sensory reception
Label the colored areas with the tissue type they represent

Epithelium (red)
Connective Tissue (green)
Muscle (yellow)
Nervous Tissue (blue)
What type of tissue is represented in this picture

Muscle
What type of tissue is represented in this picture

Nervous tissue
What type of tissue is represented in this picture

Epithelium
What type of tissue is represented in this picture

Connective tissue
General Features of Epithelium

- MORE cells and LESS extracellular matrix
- Proliferation and high turnover
- Avascular (NO blood vessels)
- Polarity
Polarity

- Free outer surface
- Basal surface facing underlying connective tissue
- Lateral surface communicating with neighboring cells
What is represented in the picture

Microvilli
What is represented in the picture

Cilia
What is represented in the picture

Stereocilia
What is represented int he boxed portion of the image

Microvilli Brush Border
What structure is represented in the image

brush border
What is represented in the image


What structure is represented in the picture

Stereocilia
What structure is represented in the picture

Stereocilia
What structure is represented in the picture

- Motile, move fluids over a cell surface (trachea, oviduct)
- Single axoneme – sperm tail
What structure is represented in the picture

Cilia
What structure is represented by the arrows present in the picture

Top Right: Cilia
Lower Left: Basal Body

Understand the labeled picture

- Lateral domain specializations: cell junctions
- Restrictions on membrane protein mobility
Label the image


label the cell junctions


Label image

ZA – zonula adherens
AJ – adherens junction
TJ – tight junction
DM - desmosome
What structure is represented in the image

Gap Junction

What is indicated by the red arrow

Terminal Bars
What is represented in the image

Terminal Bar
What is depicted in the image below

basal lamina
What structure is depicted below and what is it composed of

Basal lamina and reticular lamina appear as a single layer in LM
What is depicted by the arrows in the image

Basal infoldings
Define simple epithelium
Can be: – squamous – cuboidal, – columnar – Pseudostratified col.

Define Stratified Epithelium
Can be: – squamous – cuboidal – columnar – transitional

What type of epithelium is depicted in this image

Simple Squamous
• Mesothelium e.g. pleura, pericardium, peritoneum
What type of epithelium is depicted in this image

Simple Squamous
What type of epithelium is depicted in this image

Simple Squamous
What type of epithelium is depicted in this image

Simple cuboidal
- Forms secretory units
- Lines ducts
What type of epithelium is depicted in the image

Simple cuboidal
- Forms secretory units
- Lines ducts
What type of epithelium is depicted in the image

Simple columnar
- Absorptive
- Secretory
What type of epithelium is depicted in the image

Stratified Squamous
What type of epithelium is depicted in the image

Stratified Squamous
What type of epithelium is depicted in the image

Stratified Squamous
What type of epithelium is depicted in the image

Stratified Squamous
What type of epithelium is depicted in the image

Stratified cuboidal
What type of epithelium is depicted in the image

Stratified cuboidal
What type of epithelium is depicted in the image

Stratified columnar
What type of epithelium is depicted in the image

Stratified columnar
What type of epithelium is depicted in the image

Stratified columnar
What type of epithelium is depicted in the image

Pseudostratified columnar
What type of epithelium is depicted in the image

Pseudostratified columnar
What type of epithelium is depicted in the image

Transitional
What type of epithelium is depicted in the image

Transitional
What is depicted in the image

Unicellular gland - Goblet cell
What is depicted in the image

Unicellular gland - Goblet cell
What is depicted in the image

Sweat gland (tubular)

What is depicted in the image

Salivary gland (acinar)

What is depicted in the arrow and what is the arrow pointing to

Compound tubuloacinar gland
Arrow pointing to Serous demilunes
What is shown in this image

Carcinoma
Epithelial cells have high mitotic activity!
The most common cancers originate from epithelial cells
Benign tumors include papillomas (from surface epithelium) and adenomas (from glandular epithelium)
Malignant tumors are carcinomas (from surface epithelium) and adenocarcinomas (from glandular epithelium)