Histology Guide

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MICROSCOPE SLIDE

SLIDE NAME

MH 094 Parotid

TISSUE

Parotid
(human)

STAIN

Hematoxylin & Eosin

IMAGE SIZE

35,890 x 27,533 pixels
3.7 GB

FILE SIZE

219 MB

OBJECTIVE

40x

PIXEL SIZE

0.3171 µm

SOURCE

Medical School
University of Minnesota
Minneapolis, MN

CONTACT

Questions or comments should be sent to
tcbrelje@gmail.com

This web site is owned and operated by:

T. Clark Brelje, Ph.D.

Faculty/Retired
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455

Robert L. Sorenson, Ph.D.

Professor Emeritus
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455

Version 6.0

Copyright © 2005-2024
T. Clark Brelje and Robert L. Sorenson
All rights reserved.

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MH 094 Parotid

Parotid

The parotid is the largest of the salivary glands. It is almost entirely serous with only a few scattered mucous cells.

Stroma - the connective tissue component of the gland.
- - connective tissue that encapsulates the gland.
- Lobes - connective tissue divides the gland into lobes.
- - connective tissue further divides lobes into lobules - the smallest functional unit.
Parenchyma - the functional component of the gland that consists of secretory cells and ducts
- - arranged in acini of pyramidal serous cells. These polarized cells have rough endoplasmic reticulum at their base (basophilic) and secretion granules (eosinophilic) at their apex
- - polarized cells with flattened nuclei at the bottom of the cells. They are very lightly stained with a "foamy" appearance (mucous has been extracted).
- Intralobular Ducts - two types are found within lobules:
  - Intercalated Ducts (, and ) - the smallest ducts that insert into and drain individual acini. They are more lightly stained than acini cells and are low cuboidal.
  - - arise from intercalated ducts. They are columnar with basal striations and are surrounded by capillaries.
- Interlobular (or extralobular) Ducts ( and ) - found outside of lobules.
  - Simple columnar, stratified columnar or stratified cuboidal epithelium.
  - Supported by a thick layer of connective tissue.

Note the abundance of adipose cells which increases with age.