NEET (NTA)-National Eligibility cum Entrance Test (Medical) Biology Human Physiology-Digestion and Absorption Revision (Page 9 of 23)

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Digestive Glands - Salivary Glands

Various digestive glands are:

  • Salivary glands

  • Glands present in stomach

  • Pancreas

  • Liver and gall bladder

  • Secretions of small intestine

  • Secretions of large intestine

Salivary glands

Functional anatomy; There are three pairs of salivary glands the parotid, Submaxillary or Submandibular and sublingual glands, they secrete saliva.

  1. Parotid glands; are the largest salivary gland situated near the ears, each weighing about 20 to 30 gm. Located near the angle of jaw, one on e

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Characteristic features of Salivary glands

Features of Salivary glands

Characteristic features of Salivary glands

Sn.

Type of

Gland

Location

Opening of

duct

Histology

Percentage

of total

(1500ml/day)

Salivary

secretion

Parasympa

-thetic

Nerve

Supply

1.

Parotid

20 – 30 gm

Each

In front of

Ears

Stensen’s

Duct opens

opposite to

upper

2nd molar

tooth

Contains

Purely

Serous

Cells

25%

IX cranial

Nerve

2.

Submandi-

bular or sub

-maxillary

8 - 10 gm

Each

Located at

The angle

of lower

jaw, partly

covered by

Mandible

Wharton’s

Duct open

into the

floor of

mouth on

the sides

of frenulum

Mixed

Contains

Both serous

And

Mucous

Cells.

Ratio 4: 1

70%

VII nerve

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