+ All Categories
Home > Documents > What are the functions of the skin?. Derivatives of the Skin.

What are the functions of the skin?. Derivatives of the Skin.

Date post: 30-Dec-2015
Category:
Upload: virgil-clark
View: 217 times
Download: 0 times
Share this document with a friend
Popular Tags:
26
What are the functions of the skin?
Transcript
Page 1: What are the functions of the skin?. Derivatives of the Skin.

What are the functions of the skin?

Page 2: What are the functions of the skin?. Derivatives of the Skin.

Derivatives of the Skin

Page 3: What are the functions of the skin?. Derivatives of the Skin.

Sweat Glands

• ~3 million of them throughout the body!• Per person!

Page 4: What are the functions of the skin?. Derivatives of the Skin.

Eccrine Sweat Glands

• Releases into skin surface • Most abundant sweat glands• Also on soles, palms, and forehead• Secretory part in dermis

Page 5: What are the functions of the skin?. Derivatives of the Skin.

What makes you sweat

Page 6: What are the functions of the skin?. Derivatives of the Skin.
Page 7: What are the functions of the skin?. Derivatives of the Skin.

Apocrine Sweat Glands

• Empty into hair follicles • Larger then eccrine• Axillary and anogenital areas • Fatty and protein substances • Milky and Yellowish color… oooo!• Released during pain, stress, and sex?

Page 8: What are the functions of the skin?. Derivatives of the Skin.
Page 9: What are the functions of the skin?. Derivatives of the Skin.

Ceruminous Glands

• Release earwax!

Page 10: What are the functions of the skin?. Derivatives of the Skin.

Mammary Glands

• Secrete milk!• We’ll talk about them a little bit later

Page 11: What are the functions of the skin?. Derivatives of the Skin.

Sebaceous Glands

• Oil glands – all over body• Produce sebum• Release into hair follicle – Maybe a pore

• Hormones stimulate

Page 12: What are the functions of the skin?. Derivatives of the Skin.
Page 13: What are the functions of the skin?. Derivatives of the Skin.
Page 14: What are the functions of the skin?. Derivatives of the Skin.
Page 15: What are the functions of the skin?. Derivatives of the Skin.

Hair and Hair Follicles

• What is the point?

• Some people get a lot… lucky!

Page 16: What are the functions of the skin?. Derivatives of the Skin.

Some people don’t get any

Page 17: What are the functions of the skin?. Derivatives of the Skin.

Hair

• Growths of the epidermis variously distributed over the body.

• Dead keratinized cells

• DIVIDED INTO TWO MAJOR DIVISIONS:• 1. THE ROOT• 2. THE SHAFT

Page 18: What are the functions of the skin?. Derivatives of the Skin.

THE ROOT

• Portion just below the surface that penetrates into the dermis.

• Surrounding the root is a hair follicle• At the base of each follicle is an enlarged

structure called a bulb.

Page 19: What are the functions of the skin?. Derivatives of the Skin.

Hair Follicle

• Each follicle gets– Arrector pilli – smooth muscle– Nerves! – root hair plexus– Hair papilla – capillaries!

Page 20: What are the functions of the skin?. Derivatives of the Skin.
Page 21: What are the functions of the skin?. Derivatives of the Skin.
Page 22: What are the functions of the skin?. Derivatives of the Skin.

NAILS

• Hard keratinized cells of the epidermis

• 3 parts:• 1. Nail body- portion that is visible • 2. Free edge-Any part that may project beyond

the distal end of the digit. • 3. Nail root-Hidden in proximal nail groove

Page 23: What are the functions of the skin?. Derivatives of the Skin.
Page 24: What are the functions of the skin?. Derivatives of the Skin.

Structure of a hair follice

Page 25: What are the functions of the skin?. Derivatives of the Skin.

Hair Growth

Page 26: What are the functions of the skin?. Derivatives of the Skin.

Recommended