Lecture 7: Exocrine Glands

Question 1

Parenchyma

Answer 1

glandular epithelium constituting the secretory cells of the gland

Question 2

Exocrine glands can be found in?

Answer 2

integument
digestive system
respiratory system
reproductive system

Question 3

Exocrine glands in the integument include?

Answer 3

lacrimal glands- tear production
sebaceous glands- produce oily sebum- zits
sweat glands- sweat production
mammary glands- milk production

Question 4

Exocrine glands of the digestive system include?

Answer 4

salivary glands
mucosa of GI tract, including gastric glands
pancreas

Question 5

Exocrine glands of the respiratory system include?

Answer 5

nasal mucosa

airways

Question 6

Exocrine glands in the reproductive system include?

Answer 6

mucous glands

male accessory sex organs (prostate, seminal vesicles)

Question 7

Exocrine gland classification is done on the basis of?

Answer 7

The structure of the duct system

• simple- duct unbranched, small gland in organ
• compound- hierarchy of branching; ductwork ramified; large gland; lobed/lobulated

Shape of the secretory portion

• tubular- test tube like
• acinar(alveolar)- bags with small/large lumen
• tubuloacinar

Question 8

Exocrine gland secretions include

Answer 8

serous
mucous
seromucous

Question 9

Serrous secretions

Answer 9

• secretion is thin and watery, rich in protein (usually enzymes)
• cell nucleus is round, central (can also be located basally)
• eosinophilic with H&E

Question 10

Mucous secretions

Answer 10

secretion is viscous and slimy
cell nuclues is basally-located and flat
white/clear secretion with H&E stain

Question 11

Seromucous secretions

Answer 11

• Acini secrete seromucous which have both serous and mucous components
• serous demilunes surround the acini and secrete into the space between the mucous cell

Question 12

Mechanism of secretion include

Answer 12

Holocrine
Merocrine
Apocrine

Question 13

Holocrine mechanisms of secretion

Answer 13

• the secretory product accumulate within the maturing cells
• programmed cell death
• product and apoptotic cell fragments discharged into the lumen of the duct

Question 14

Where are holocrine secretions?

Answer 14

sebaceous glands of the skin

Question 15

Melocrine mechanism of secretion?

Question 16

Merocrine cells can be seen in?

Answer 16

salivary glands
pancrease
eccrine sweat glands

Question 17

Aprocrine cells can be seen in?

Answer 17

small portions of membrane pinch off to release the secretory product
-apocrine sweat gland, lactating mammary gland

Question 18

Simple tubular

Answer 18

straight, unbranched
like a test tube
found in the instestine

Question 19

Simple branched tubular

Answer 19

branched tubular secretory regions
single, unbranched duct
found mainly in the stomach

Question 20

Simple colied tubular

Answer 20

• single tube that is tightly coiled in secretory region
• will see various profiles in one plane of section
• sweat glands

Question 21

Simple branched acinar

Answer 21

• several acini secrete into single duct
• sebaceous gland
  - holocrine mode of secretion
  - sebum accumulates within secretory cells
  - degeneration of cell discharges the sebum

Question 22

Compound gland ductwork

Answer 22

intralobular ducts
interlobular duct
(inter)lobuar duct
main duct

Question 23

Intalobular ducts

Answer 23

• ductwork within a lobule; usually in the centre of the lobule
• types
  
  • intercalated
  • striated

Question 24

Interlobular duct

Answer 24

ductwork between lobules; located within the interlobular CT

Question 25

(inter)lobar ducts

Answer 25

ductwork located between lobes that drain each lobe

-will draine the lobe of that gland

Question 26

Main duct

Answer 26

Formed by the convergence of lobar ducts