ch 5 ppt - 5-1Chapter 5The Integumentary SystemSkin and its...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 5-1Chapter 5The Integumentary SystemSkin and its accessory structuresstructurefunctiongrowth and repairdevelopmentagingdisorders5-2General AnatomyA large organ composed of all 4 tissue types22 square feet 1-2 mm thickWeight 10 lbs.5-3Overview2 Major layers of skinCutaneous:epidermis is epithelial tissue onlydermis is layer of connective tissue, nerve & muscleSubcutaneous tissue (subQ or hypodermis):layer of adipose & areolar tissuesubQ = subcutaneous injectionintradermal = within the skin layer5-4Overview of EpidermisStratified squamous epitheliumContains no blood vessels4 types of cells5 distinct strata (layers) of cells5-5Cell types of the EpidermisKeratinocytes--90%produce keratinMelanocytes-----8 %produces melanin pigmentmelanin transferred to other cells with long cell processesLangerhan cells:Macrophage WBC from bone marrowprovide immunityMerkel cellsin deepest layerform touch receptor with sensory neuron5-6Layers (Strata) of the EpidermisStratum corneumStratum lucidumStratum granulosumStratum spinosumStratum basale5-7Stratum Basale Deepest single layer of cells Called stratum germinativumCombination of merkel cells, melanocytes, keratinocytes & stem cells that divide repeatedlyCells attached to each other & to basement membrane by desmosomes & hemidesmosomes5-8Stratum Spinosum8 to 10 cell layers held together by desmosomesDuring slide preparation, cells shrink and look spinyMelanin taken in by phagocytosis from nearby melanocytes5-9...
View Full Document

This note was uploaded on 03/24/2010 for the course BIO 2401 taught by Professor Maurstad during the Spring '08 term at San Jacinto.

Page1 / 24

ch 5 ppt - 5-1Chapter 5The Integumentary SystemSkin and its...

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online