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The Integumentary System (Skin)

The covering system for the body - for protection, regulation, and metabolism.
by

Brandon Poe

on 10 October 2015

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Transcript of The Integumentary System (Skin)

The Integumentary System
The Integumentary System
Skin
Functions of the Skin
Layers of the Skin
Epidermis
Within the dermis
Dermis
Tissues and the Skin
Photo source:
http://health.howstuffworks.com/skin-care/beauty/sun-care/skin-pigmentation.htm
Epithelium

Connective Tissue

Muscle


Nervous Tissue
epidermis

dermis

Blood vessels (arteries) have smooth muscle
Arrector pili muscles on hair follicles

Nerve ending
Specialized sensory endings
Protection

Blood Reservoir

Body Temperature Regulation

Waste Excretion

Cutaneous Sensation

Metabolic Functions
Physical barrier
Chemical barrier
Immunological barrier
pH (acid mantle)
UV protection (melanin)
dendritic cells (Langerhans)
Glands
Hair
Nails
Sudoriferous (Sweat)

Sebaceous (Oil)

Mammary (Milk)

Ceruminous (Wax)
merocrine (regular)
apocrine (smelly)
What is the smallest thing you should put in your ear canal?
A) George Clooney
B) your elbow
C) a Q-tip
D) a pencil
Which type of epithelium is the most protective?

A) simple squamous
B) simple cuboidal
C) transitional
D) stratified squamous
Presentation: An 8-year-old boy from Sri Lanka presents with an 18-month history of a steadily enlarging patch of white skin over his lip, chin and throat. He has been otherwise healthy and has no other skin or medical problems. There is no family history of note.
A Case Study
waste products from the blood are excreted in sweat
dermal circulation
sweat
vitamin D production
keratinized stratified squamous epithelium
approximately 5% of total blood volume is found in the skin
blood needed elsewhere can be sent there immediately instead of having to make new blood
touch
temperature
pain
etc.
What function of the skin is most likely accomplished by muscle tissue?

A) Protection
B) Body Temperature Regulation
C) Vitamin D Metabolism
D) Cutaneous Sensation
Which layer of the skin has nervous tissue in it?

A) Epidermis
B) Stratum Basale
C) Dermis
D) Hypodermis
Which cell type is found in all layers of the epidermis?

A) Melanocyte
B) Merkel Cell
C) Dendritic Cell
D) Keratinocyte
Place the layers of the epidermis in order from superficial to deep.

1) Stratum Granulosum
2) Stratum Corneum
3) Stratum Spinosum
4) Stratum Lucidum
5) Stratum Basale
Cells of the epidermis
Melanocytes
Merkel cells
Keratinocytes
Dendritic cells
Sensory Endings
Image source: http://www.wiley.com/college/pratt/0471393878/instructor/structure/keratin_collagen/index.html
Image source: Blausen.com staff. https://en.wikiversity.org/wiki/Blausen_gallery_2014. Wikiversity Journal of Medicine.
Image source: https://courses.candelalearning.com/apvccs/chapter/pain/
This work by Cenveo is licensed under a Creative Commons Attribution 3.0 Unitied States (http://creativecommmons.org/licenses/by/3.0/us/).
Which type of tissue is primarily responsible for the protective functions of the skin?

A) stratified squamous epithelium
B) areolar connective tissue
C) smooth muscle
D) nerve fiber endings
Which type of tissue is primarily responsible for the protective functions of the skin?

A) stratified squamous epithelium
B) areolar connective tissue
C) smooth muscle
D) nerve fiber endings
All images (unless otherwise noted) are from CNX Anatomy & Physiology. OpenStax College. Sept 1, 2015. http://cnx.org/contents/14fb4ad7-39a1-4eee-ab6e-3ef2482e3e22@7.28:1/Preface
Functions
and
Tissues

Functions
and
Tissues
Full transcript