Lecture 5

Question 1

Epithelium functions

Answer 1

• Protection
• Absorption
• Secretion
• Sensory reception

Question 2

Label the colored areas with the tissue type they represent

Answer 2

Epithelium (red)

Connective Tissue (green)

Muscle (yellow)

Nervous Tissue (blue)

Question 3

What type of tissue is represented in this picture

Answer 3

Muscle

Question 4

What type of tissue is represented in this picture

Answer 4

Nervous tissue

Question 5

What type of tissue is represented in this picture

Answer 5

Epithelium

Question 6

What type of tissue is represented in this picture

Answer 6

Connective tissue

Question 7

General Features of Epithelium

Answer 7

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

Question 8

Polarity

Answer 8

• Free outer surface
• Basal surface facing underlying connective tissue
• Lateral surface communicating with neighboring cells

Question 9

What is represented in the picture

Answer 9

Microvilli

Question 10

What is represented in the picture

Answer 10

Cilia

Question 11

What is represented in the picture

Answer 11

Stereocilia

Question 12

What is represented int he boxed portion of the image

Answer 12

Microvilli Brush Border

Question 13

What structure is represented in the image

Answer 13

brush border

Question 14

What is represented in the image

Answer 14

Question 15

What structure is represented in the picture

Answer 15

Stereocilia

Question 16

What structure is represented in the picture

Answer 16

Stereocilia

Question 17

What structure is represented in the picture

Answer 17

• Motile, move fluids over a cell surface (trachea, oviduct)
• Single axoneme – sperm tail

Question 18

What structure is represented in the picture

Answer 18

Cilia

Question 19

What structure is represented by the arrows present in the picture

Answer 19

Top Right: Cilia

Lower Left: Basal Body

Question 20

Understand the labeled picture

Answer 20

• Lateral domain specializations: cell junctions
• Restrictions on membrane protein mobility

Question 21

Label the image

Answer 21

Question 22

label the cell junctions

Answer 22

Question 23

Label image

Answer 23

ZA – zonula adherens

AJ – adherens junction

TJ – tight junction

DM - desmosome

Question 24

What structure is represented in the image

Answer 24

Gap Junction

Question 25

What is indicated by the red arrow

Answer 25

Terminal Bars

Question 26

What is represented in the image

Answer 26

Terminal Bar

Question 27

What is depicted in the image below

Answer 27

basal lamina

Question 28

What structure is depicted below and what is it composed of

Answer 28

Basal lamina and reticular lamina appear as a single layer in LM

Question 29

What is depicted by the arrows in the image

Answer 29

Basal infoldings

Question 30

Define simple epithelium

Answer 30

Can be: – squamous – cuboidal, – columnar – Pseudostratified col.

Question 31

Define Stratified Epithelium

Answer 31

Can be: – squamous – cuboidal – columnar – transitional

Question 32

What type of epithelium is depicted in this image

Answer 32

Simple Squamous • Mesothelium e.g. pleura, pericardium, peritoneum

Question 33

What type of epithelium is depicted in this image

Answer 33

Simple Squamous

Question 34

What type of epithelium is depicted in this image

Answer 34

Simple Squamous

Question 35

What type of epithelium is depicted in this image

Answer 35

Simple cuboidal * Forms secretory units * Lines ducts

Question 36

What type of epithelium is depicted in the image

Answer 36

Simple cuboidal * Forms secretory units * Lines ducts

Question 37

What type of epithelium is depicted in the image

Answer 37

Simple columnar * Absorptive * Secretory

Question 38

What type of epithelium is depicted in the image

Answer 38

Stratified Squamous

Question 39

What type of epithelium is depicted in the image

Answer 39

Stratified Squamous

Question 40

What type of epithelium is depicted in the image

Answer 40

Stratified Squamous

Question 41

What type of epithelium is depicted in the image

Answer 41

Stratified Squamous

Question 42

What type of epithelium is depicted in the image

Answer 42

Stratified cuboidal

Question 43

What type of epithelium is depicted in the image

Answer 43

Stratified cuboidal

Question 44

What type of epithelium is depicted in the image

Answer 44

Stratified columnar

Question 45

What type of epithelium is depicted in the image

Answer 45

Stratified columnar

Question 46

What type of epithelium is depicted in the image ​

Answer 46

Stratified columnar

Question 47

What type of epithelium is depicted in the image

Answer 47

Pseudostratified columnar

Question 48

What type of epithelium is depicted in the image

Answer 48

Pseudostratified columnar

Question 49

What type of epithelium is depicted in the image

Answer 49

Transitional

Question 50

What type of epithelium is depicted in the image

Answer 50

Transitional

Question 51

What is depicted in the image

Answer 51

Unicellular gland - Goblet cell

Question 52

What is depicted in the image

Answer 52

Unicellular gland - Goblet cell

Question 53

What is depicted in the image

Answer 53

Sweat gland (tubular)

Question 54

What is depicted in the image

Answer 54

Salivary gland (acinar)

Question 55

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

Answer 55

Compound tubuloacinar gland Arrow pointing to Serous demilunes

Question 56

What is shown in this image

Answer 56

Carcinoma ## Footnote 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)