Ömer aslankan salivary glands

1. SALIVARY GLANDS
OMER ASLANKAN

2. SALIVARY GLANDS
• Produce saliva which is a part of the immune
system;
• are controlled by the automatic nervous
system
• are exocrine glands
• divided into major and minor
• Has Three epithelial cell types
• Consis; the parenchyma and the stroma.

3. SEROUS CELLS
• are polarized protein-secreting
cells
• are pyramidal in shape, with round
nuclei,.
• are Short, irregular microvilli

4. MUCOUS CELLS
• are Cuboidal to columnar in shape
• Oval nuclei pressed toward the base.
• contain apical granules provide
lubricating properties in saliva
• organized as cylindrical tubules
• produce a mucous secretory product
with mainly mucins.

5. MYOEPITHELIAL CELLS
• are thin and spindle-shaped
• are found basement membrane around
tubules and acini
• They show features of both smooth
muscle and epithelium.
• Function; is contractile during saliva
secretion

6. MAJOR SALIVARY GLANDS (PAROTID GLANDS)
• Largest encapsulated gland
• located in each cheek near the ear
• are branched acinar glands with
exclusively serous acini.
• serous cells; secrete abundant a-
amylase
• a-amylase; initiates hydrolysis of
carbohydrates and proline-rich proteins.

7. MAJOR SALIVARY GLANDS (SUBMANDIBULAR GLANDS)
• 2nd largest salivary gland
• produces amylase and mucin
• structure is serous demilune
• serous demilune; secrete the proteins that
contain the enzyme lysozyme
• secrete lysozyme for hydrolysis of bacterial
walls.
• composed of serous and mucous cells

8. MAJOR SALIVARY GLANDS (SUBLINGUAL GLANDS)
• The smallest of the major glands
• is composed of mucous cells.
• product of the gland is mucus

9. DUCT SYSTEM (INTERCALATED DUCT)
• First portion of the duct system that is
directly attached to the secretory unit
• Intralobular
• Smallest duct in cross-section
• Functions;; secretes LACTOFERRIN and
TRANSPORT
• Lactoferrin binds iron, which is needed by
bacteria

10. DUCT SYSTEM (STRIATED DUCTS)
• Formed by the UNION of several
intercalated ducts
• Intralobular
• Cells are COLUMNAR with basal striations
formed by the infoldings of the plasma
membrane and mitochondria
• ATP for active transport
• Secretes inorganic ions such as Na, K and
H
• Functions;; Regulates pH of saliva and
transport

11. DUCT SYSTEM (EXCRETORY DUCT)
• are Large ducts in the connective tissue
septae
• Is Extend from the gland to the oral
cavity
• has stratified cuboidal or columnar cells.

12. THANK YOU