skin.ppt

BODY SYSTEMS

SKIN

or

INTEGUMENTARY

TWO LAYERS• EPIDERMIS• Thin layer

• Top layer

• Melanin (located w/in)

• Epithelial T.

• DERMIS• Thick layer

• Lower layer

• Nerve, blood, hair & sweat

• Connective T.

EPITHELIALSIMPLE:

Layer- one cell thick, flat or cubed.

EPITHELIALSTRATIFIED:

Layer- two or more, mixed.

CONNECTIVE TISSUEStructure & Support. Blood, cartilage,

and bone are different & not common.

EPIDERMIS >

DERMIS >

FUNCTIONS• PROTECTION

• MAKE VITAMIN D

• SENSORY - TOUCH

• MAINTAIN TEMPERATURE

• EXPEL WASTE - SWEAT

How does the sun affect us?