Appendages of the Skin- Lesson: Hair, Hair Follicles and Nails

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The Integumentary System

• Derives its name from the Latin word

integumentum, which means to cover

• Skin is the largest organ system

– average adult wears 8-10 pounds of skin and

covers an area of 22 square feet

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Functions of the Integumentary

System

•Protection

covers the body and acts as a physical barrier

•Body Temperature Maintenance

contains sweat glands; secretes fluid (perspiration)

•Excretion

Flush waste with perspiration

•Perception of stimuli

contains large number of nerve endings

•Synthesizes vitamin D

epidermal layers mnemonic

Come Lets Get Sun- Burned (superficial to deep)

Stratum Corneum

Stratum Lucidum

Stratum Granulosum

Stratum Spinosum

Stratum Basale

Some text here about the topic of discussion

Hair

Hair is made up of protein, fat, and water. Hair grows from the follicles located in the subcutaneous fat layer.

Nails

There are THREE parts to a nail. The nail plate, nail bed, and cuticle. Nails help to protect the fingers and toes from injury, and help with the sense of touch.

Sweat and Oil glands

The two glands are called the sweat and oil glands.

These glands are the last part of the integumentary system.

They help produce sweat to cool the body off, produce oil onto your hair to keep it soft, and produce wax to keep things from entering your ears.

Sweat and Oil glands

The two glands are called the sweat and oil glands.

These glands are the last part of the integumentary system.

They help produce sweat to cool the body off, produce oil onto your hair to keep it soft, and produce wax to keep things from entering your ears.