GLANDULAR EPITHELIUM By dr.huzaifa

1. PREPARED BY: DR.HUZAIFA AHMED

3.  Is a Special Type Of Epithelium Makes Up The
Glands In The Body.
 Single Or Pair Group Of Cells.
 Secrets Enzymes, Hormones, Fats, Or Mucous.
 It`s Secreations Required By There Tissue.

5.  Ductless( No Duct System).
 Release Internally (Directly To The Blood).
 Secret Hormones.
 Multicellular With Except Paracrine Glands.
 Exp(pituitary, thyroid, and adrenal glands.).

7.  Have Duct System.
 Release Internally Or Externally Both.
 Secret Earwax , Digestive Enzymes, And Saliva.
 Multicellular Or Unicellular Both.

9.  ACCORDING TO:
 Presence and Absence Of Duct.
 Shape Of Secretory Unit.
 Nature Of Secretion.
 Mode Of Secretion.

10. SIMPLE GLAND:
 When All The Secretory Cell Of An Exocrine Gland
Discharge Into One Duct.
 Exp(gastric gland and sweat gland)
COMPOUND GLAND:
 Some Time There Are a Number Of Group of
secretory cells each group dischargeing into its
own duct .these ducts units to form larger duct
 exp(paratoid gland, pancreas etc).

12. TUBULAR:
 GLAND WITH SECRETORY UNIT TUBULAR IN SHAPE.
 THE TUBE MAY BE STRAIGHT,COILED OR BRANCHED
 EXP(GASTRIC GLAND).
ACINAR GLAND:
 GLANDS WITH SECRETORY UNIT ROUND OR
OVAL IN SHAPE.
 EXP(SALIVARY GLAND).
BOTH IN SIMPLE AND COMPOUND GLAND THE SECRETORY
CELL MAY BE ARRANGED IN VERIOUS WAYS.

13. ALVELOAR GLAND:
 Gland with secretory unit flaskshaped. however,it
may be noted that the term acini and alveoli are
often used as if they where synonymous. gland in
which the secretory element are greatly
distended are called saccular gland

14.  MOCOUS :
 cell of mucous acini are tall with flat nucllie at their bases.
 the lumen of these acini is larger then the serous .
 in mucous gland the secretion contains mucopoly saccharides.
secretion collect in the apical part of the cell. as a result nuclei are
pushed to the base of the cell and may be flattend.
 mucopolysaccride push the nucleous at the bottom and it become a
flat shape.
 thick mucoid secretion.
 exp(sublingual gland/goblet cell ).

15.  cell of serous gland are triangle in shape.
 with a rouned nucleus.
 their nucleus are centrally place.
 the secretion of serous gland are protein in nature .
 the cytoplasm of these cell in grandular and often
stains bluish with hematoxiylin and eosin.
 the lumen of there acine is small.
 exp (parotid gland).

16.  have both flat and rounded nuclus.


17. SERUS GLAND
MUCUS GLAND SERO MUCUS GLAND

18. HOLOCRINE:
 in some glands the entire cell distintegrates while
discharging its secretion this manner of discharging
secretion is described as holocrine.
 exp(sebaceous gland).
APOCRINE
 in sub glands the apicical part of the cell are shade off to
discharged the secretion this manner of secretion is
describe as apocrine.
 exp(sweat gland ,mammary gland etc).

19. MEROCRINE:
 in most exocrine glands secretion are thrown out of the cell by a
process of “exocytosis” the cell remaining intact this manner of
secretion is describe as merocrine
 exp (goblet cell )
MEROCRINE APOCRINE HOLOCRINE