Epithelium & Glands

Question 1

Type of epithelium found in the lining of the blood vessels, plueral cavity, peritoneum, and pericardium.

Answer 1

Simple squamous epithelium

Question 2

Give example of simple cuboidal epithelium

Answer 2

Thyroid and ovarian follicle

Question 3

Where does simple columnar epithelium usually found

Answer 3

Intestine, renal collecting tubules

Question 4

Cell shape that is tall as they are wide. With spherical nucleus.

Answer 4

Cuboidal

Question 5

Elongated cell shape with elongated nucleus

Answer 5

Columnar

Question 6

Type of epithelium that shows an illusion of stratification.

Answer 6

Pseudostratified epithelium

Question 7

Where is stratified squamous Keratinized epithelium found?

Answer 7

Epithelia

Question 8

Where is stratified squamous non keratinized epithelia found?

Answer 8

Mouth, vagina, anal canal, larynx, esophagus

Question 9

Where is pseudostratified found?

Answer 9

Nasal cavity, bronchi, trachea

Question 10

Where is stratified columnar epithelium found?

Answer 10

Conjunctiva

Question 11

Aggregated polyhedral cells

Answer 11

Epithelia

Question 12

Characteristics of epithelium

Answer 12

Avascular
Polarity
Presence of basement membrane or basal lamina
Presence of cell juntion

Question 13

Main intermediate filament of epithelia

Answer 13

Keratin

Question 14

Is keratin made of dead skin cells?

Answer 14

T

Question 15

Diff. Basal lamina with basement membrane.

Answer 15

Basal lamina is a part of basement membrane

Question 16

2 parts of basement membrane

Answer 16

Basal lamina

Reticular lamina

Question 17

What type of collagen is basal lamina made of?

Answer 17

Type IV collagen

Question 18

What type of collagen is reticular lamina made of?

Answer 18

Type III collagen

Question 19

What binds basal and reticular lamina?

Answer 19

Type VII collagen

Question 20

Enumerate the Junctions of epithelium

Answer 20

Tight junction
Adherens 
Desmosomes
Hemidesmosomes
Gap junction

Question 21

Tight junction (zonula occludins)

Protein component
Function
Defect

Answer 21

Occludin & claudin
Ensure that mol travel transcellularly and not paracelullarly
Compromised BBB. Neurological disorder.

Question 22

Zonula adherens / adherent junction

Protein component
Function
Defect

Answer 22

E-cadherin & catenin
Terminal Web
Carcinoma

Question 23

Desmosomes (Macula adherens)

Protein component
Function
Defect

Answer 23

Cadherin family
Strong achor
Skin disorder

Question 24

Hemidesmosomes

Protein component
Function
Defect

Answer 24

Integrin
Binds the epithelium to the basal lamina
Epidermolysis bullosa (blisters)

Question 25

Gap Junction (nexus) Protein component Function defect

Answer 25

Connexin Transfer mol from one cell to another Type of deafness & peripheral neuropathy

Question 26

Differentiate exocrine from endocrine

Answer 26

Exocrine - w/ ducts. Substances are near to its target site. Endocrine - ductless. Hormones travel via bloodstream

Question 27

Differentiate simple from compound glands

Answer 27

Simple - ONLY the secretory portion is branching Compound - both secretory and duct is branching

Question 28

3 mechaninsm of cell release

Answer 28

Merocrine Apocrine Holocrine

Question 29

Most common type and typical release of hormones. Ex: sweat glands

Answer 29

Merocrine

Question 30

A part of the APICAL layer of the cell are released along the products.

Answer 30

Apocrine

Question 31

The whole cell disintegrates along with its products.

Answer 31

Holocrine

Question 32

Example of apocrine. (Pinch)

Answer 32

Fat droplets from mammary gland

Question 33

Example of organ that follows holocrine pathway

Answer 33

Sebaceous gland

Question 34

Example of simple tubular

Answer 34

Intestines

Question 35

Example of branched tubular

Answer 35

Stomach and uterus

Question 36

Example of acinar

Answer 36

Mucous gland of urethra

Question 37

Branched acinar

Answer 37

Sebaceous gland

Question 38

Example of coiled tubular

Answer 38

Sweat glands

Question 39

Example of compound tubular

Answer 39

Brunner glands of duodenum

Question 40

Example of compound acinar

Answer 40

Exocrine pancreas

Question 41

Tubuloacinar

Answer 41

Salivary glands

Question 42

Differentiate serous from mucous cell

Answer 42

Serous - round nucleus. Pyramidal w/ long base. Shape like a grape. Mucous - nucleus is oval as it is PRESSED on the periphery. Cuboidal to columnar

Question 43

Possible secretion membranes

Answer 43

Purely serous Mixed glands, predominantly serous Mixed glands, predominantly mucous

Question 44

Differentiate Microvili Steriocilia Cilia

Answer 44

Microvili - non motile. Extends surface area. Absorption. (Intestine) Steriocilia - non motile. Extends surface area. BRANCHING Cilia - MOTILE. Lining of respiratory tract.

Question 45

There is NO microvili in the stomach. T/F

Answer 45

T

Question 46

Examples of thick and thin skin

Answer 46

Thick - palm and soles Thin - vaginal lining, mouth.

Question 47

Microvili can be found in the small intestine. T/F

Answer 47

T