Glands

Medicine Smd572 with Ream at Wright State University

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By: Anonymous
Created: 2011-01-22
Size: 25 flashcards
Views: 10

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Parenchyma

Secretory unit and duct cells

Stroma

Surrounding connective tissue

Unicellular

ONLY Goblet Cells. Secrete mucous.

Multicellular

1) Secretory Unit - connects to surface via epithelial duct

2) Intraepithelial - remain in epithelium. Release directly to surface

3) Secretory sheet - Large accumulations of exocrine glands

Intraepithelial Gland

Type of multiucellular gland. Releases directly onto surface. Nasal mucosa and penile urethra.

Secretory Sheet

Multicellular gland type. Large accumulation of glands. Found in stomach.

Simple Duct

Single duct and secretory unit. No branching.

Compound Duct

Branched ducts, leading to multiple secretory units.

Tubular Duct

Shape Classification.

Narrow tubular lumen.

Alveolar Duct

Shape Classification.

Round flask like secretory unit with a wide lumen.

Acinar Duct

Shape Classification.

Round flask like secretory unit with narrow lumen

Tubulalveolar/Tubuloacinar Ducts

Shape classifications.

Hybrids of tubular and alveolar/acinar

Acinar - more narrow, Alveolar - wider.

Cellular Participation Types

Merocrine, Apocrine, and Holocrine - functional class.

See exocytosis notes also.

Serous Glands

Watery and protein rich secretion..

Histology: Pancreas. Round nucleus, lower 1/3 of cell. Apical secretory granules. Blue RER

Serous Gland Histology

Apical secretory granules (supranuclear). Pale Blue RER. Round Nucleus in lower 1/3 of cell.

Mucous Glands

Glycoprotein product - PAS+. Thick and viscous: very hydrophilic. Mucinogen inside cell - removed for LM prep. Flattened nucleus.

Sebum

Holocrine secretion. Waxy, lipid rich (cholesterol) secretion. Sebaceous glands.

Sweat

Watery and hypotonic. Eccrine - low protein, odorless. Apocrine - more protein, smelly.

Milk

Watery suspension of protein (some IgA), lipids, carbohydrates, mineral, electrolytes.

Protein secreted by merocrine. Lipids secrete via apocrine.

Mixed Function Gland

2 acini types: Serous and mucous. Mucous on inside with Serous Demilune.

Cap may be result of fixation. Rapid freezing shows Secretory Canaliculi channels allowing mucous and serous products to mix. EX salivary glands.

Serous Demilune

Conventional fixation artifact of mixed function gland. Outer serous acini covering inner mucous acini

Secretory canaliculli

Channels between mucous cells allowing serous secretions to mix into a mucoserous product.

Myoepithelium

Spindle shaped cells in basement membrane of secretory units. Sit between basal lamina and basal membrane. Actin/Myosin contractile units - squeeze out secretory product. Keratin intermediate filaments. Ectoderm origin.

Myoepithelium origin

Ectoderm

Myoepithelium location and construction

Basement membrane between basal lamina and basal membrane. Myosin/actin filaments. Attached via hemidesmosomes and desmosomes.

About this deck

By: Anonymous
Created: 2011-01-22
Size: 25 flashcards
Views: 10

About StudyBlue

“I have been getting MUCH better grades on all my tests for school. Flash cards, notes, and quizzes are great on here. Thanks!”
Kathy