Glandular Epithelium

Prepared by : Saleh Abduraboh

Glandular Epithelium

• Is a special type of epithelium makes up the glands in body.

• Single or Group of cells.• Secrets enzymes, hormones, fats or mucous.• Its secretions are required by other tissue.

The formation of glands

Endocrine glands

• Ductless (no duct system).

• Release internally.

• Secret hormones.

• Multicellular with exception Paracrine glands.

Endocrine glands

Exocrine glands

• Have duct system.

• Release internally or externally.

• Secret ear-wax, digestive enzymes

and saliva.

• Multicellular or unicellular.

Exocrine glands secretions

watery waxy fatty cellular serous mucous mixed

sweat Gl Oil Gl Salivary glands External ear Ovary & testis

Glandular classification

According to: • Presence and absence of ducts.• Number of secretory cells.• Nature of secretion.• Mode of secretion.• Shape of secretory units & Arrangement of

Duct (branching in exocrine structure).

1 .Presence and absence of ducts

Salivary gland (Exocrine)

Thyroid gland (Endocrine)

Pancreas gland (Mixed)

2 .Number of secretory cells

First: Unicellular Exocrine (ex: Goblet cells)

First: Unicellular Endocrine (ex: Enteroendocrine cells)

Second: MulticellularExocrine (ex: Endometrial glands)

Second: MulticellularEndocrine (ex: Thyroid gland)

3 .Nature of secretion

4 .Mode of secretion

5 .Shape of secretory units & Arrangement of Duct

Gland as a compact organ

Thank you for being attentive

Presented by group B students: Name No.

Saleh Abduraboh 14

Moath Abdulkariem 15

Omnia Mohammed 16

Mohammed Sofian 17