Function
Epidermis Layers
Specialized Epidermis Cells
Dermis
Hair
100

This Integumentary function prevents bodily injury, harmful substances, microbes, extreme temperatures and UV radiation. 

What is external environment protection? 

100

This layer is the outermost layer of epidermis, consisting of 20-30 layers of dead skin.

What is the corneum?

100

These specialized epidermis cells are found in the basale layer and produce melanin.

What are melanocytes? 

100
These are the two layers of the dermis.

What are papillary and reticular?

100

This type of hair is formed in the third trimester. It is fine and un-pigmented.

What is lanugo hair?

200

This Integumentary function contains dendrite cells which help fight viruses and harmful microbes.

What is the immune function?

200

This layer of epidermis is only found on the soles of the feet and palms of the hands.  

What is the lucidum?

200

These specialized epidermis cells act as sensory receptors for light touch.

What are tactile cells?

200

This layer of dermis is comprised or areolar connective tissue and is genetically controlled.

What is the papillary layer?

200

This type of hair is found primarily on humans. It can be found on upper and lower limbs.

What is vellus hair?

300

This Integumentary function provides vasoconstriction to conserve heat or vasodilation to release heat.

What is temperature regulation?

300

In this layer of epidermis, keratinocytes begin keratinization, also the nucleus and organelles disintegrate.  

What is the granulosum?

300

These specialized epidermis cells protect skin and underlying tissues from infection. 

What are dendrite cells?

300

This layer of the dermis contains fingerprints.

What is the papillary layer of dermis?

300

This type of hair is found on the scalp-, eyebrows, eye lashes and men's beards.

What is terminal hair?

400

This Integumentary function gets rid of waste products from the surface during sweating.

What is secretion?

400

This layer of epidermis has new cells from the basal layer, pushed into it. 

What is the spinosum?

400

These specialized epidermis cells shield nuclear DNA from UV radiation. 

What are melanocytes?

400

This layer of the dermis contains dense irregular connective tissue.

What is the reticular layer?

400

This hair zone originates in the dermis and is the only region containing living epithelial cells (hair matrix). 

What is the hair bulb?

500

This Integumentary function increases the absorption of calcium and phosphate. 

What is Vitamin D Synthesis?

500

This layer of epidermis is the deepest layer and is the only mitotic layer.

What is the basale?

500

This hair zone contains the distal two-thirds of hair, the cells are dead and is the portion beyond skin surface.

What is the hair shaft?

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