___________ glands…

• _________ ______ glands

• _________ ______ glands

Abundant & widespread, mostly H2O, ducts to surface of skin, myoepithelial cells.

Less abundant, found in ______, _____, _____ regions (& faces of men), > conc. Of ______ ______, bacteria breakdown cause rancid smell, ducts to hair follicles.

BIOL 2010 Human Anatomy & Physiology IBIOL 2010 Human Anatomy & Physiology I

What type of glands are in the skin?

__________ glands…

Secrete _________ (oily substance) often into hair follicle (holocrine glands).

Other glands…

____________

____________

What type of glands are in the skin?

Anatomy:_______________

Growth from ________!

Above skinSkin - to matrix

Matrix to papilla

What’s all the fuzz about?

Fetus & newborns

Fine unpigmented hair

Coarse pigmented hair

Types:_______

_______

_______

Texture:Straight

Wavy

Kinky

_________ in cross-section

_________ in cross-section

_________ in cross-section

Colors:

Blonde - Black

Red

White

Varying amounts of _______

___________ pigment

No melanin, ____ in medulla

What’s all the fuzz about?

Predict #3 - pg. 146Marie Antoinette’s hair supposedly turned white overnight after she heard she would be sent to the guillotine.

Explain why you believe or disbelieve this story!

Take 5!!!

Discuss with your neighbor and predict

an answer.

Growth also from ________ and also comprised of dead epithelial cells and _______ _______

What portion of the nail would a physician have to remove to eliminate the nail?

Let’s nail down the anatomy!

Caused by:

__________

____________

• Group of pigments (black, brown, yellowish, or reddish).

• Produced by __________

____________

• O2 transporting molecule in blood (__ makes it red)

• Yellow/orange pigment

What causes differences in skin color?

Abnormal skin

colorations:

•________

•________

•________

•________

•________

Cyan = blue

Pallo = sway

Albi = white

Eryth = red

What about abnormal skin colorations?

Burns are ranked based on the severity and the depth of tissue destruction.1st degree:____________ damaged ~red & painful, NO blisters

2nd degree:_________ & some _______ damaged ~red, white or tan, very painful, BLISTERS present

3rd degree (full thickness)_____ _______ ___________ ~black, NO pain, NO blisters

Why are burns some of the most painful injuries?

Have you ever wondered how they measure % of body burned?

They use the rule of 9s.

9

+9 = 189

18 + 18 = 36

18 +18 = 36

1

= 100%

How do you determine the extent of a burn?

_______ _____ forms (we’ll discuss later)

Variety of new cells _________ to damaged area

____________divide rapidly and ________ invade tissue

_______ replaced with other fibers

How do skin wounds heal?

1 2

3 4

Types are identified based on the type of cells that mutate:_____ ___ carcinoma

Least dangerous, start as “shiny” bump, center becomes concave and ulcerus _________ ___ carcinoma

___________

Raised, red, “scaly” & ulcerus, can metastasize

Dark, flat, irregular, most deadly

Is all skin cancer equally dangerous?