1. A group of tissues that performs a specific function is a(n)
organ system.
organism.
tissue.
organ.

2. The outermost layer of the skin is the
hypodermis.
subcutaneous layer. 
epidermis.
dermis.

3. All of the following are functions of the skin EXCEPT
protection
vitamin B synthesis
temperature regulation
sensation

4. The protein that helps protect the skin and underlying tissue is
melanin.
melatonin.
keratin.
actin.

5. The cells producing the pigment responsible for skin color are the
keratinocytes.
melanocytes.
adipocytes.
Merkel cells.

6. All of the following are accessory organs of the skin EXCEPT
hair
nails
pain receptors
sweat glands

7. The bundle of smooth muscles associated with hair follicles is called
orbicularis muscle.
sebaceous bundle.
arrector pili. 
none of the above.

8. Perspiration is the substance produced by
ceruminous glands.
sudoriferous glands.
sebaceous glands.
holocrine glands.

9. A burn that involves the entire epidermis and some of the dermis is a
first-degree burn.
second-degree burn.
third-degree burn.
fourth-degree burn.

10. The most common form of skin cancer is
basal cell carcinoma.
squamous cell carcinoma.
granular cell carcinoma.
malignant melanoma.