Integumentary System

2. a hormone essential for the absorption of calcium and phosphorus by the small intestine
4. a bundle of smooth muscle cells that extend from the papillary dermis to the connective tissue sheath that surrounds each hair follicle
6. attaches the integument to deeper structures
11. another word for keratinized
15. life-threatening skin cancer that rapidly metastasizes through the lymphatic system
16. only four layers of skin that cover the body
19. below the epidermis
20. second layer of epidermis where cells continue to divide
21. most common skin cancer which originates in the stratum germinativum
23. protein that makes skin water-resistant and durable
24. absorbed, modified, and released by the liver and then converted by the kidneys into calcitriol
25. the most superficial layer of the epidermis
26. aka hypodermis
27. oil glands (holocrine glands) that discharge and oily lipid secretion into hair follicles

1. organs that produce hair
3. skin
5. consists of loose connective tissue that supports and nourishes the epidermis
7. layer of cells firmly attached to the basement membrane
8. an orange-yellow pigment that normally accumulates in epidermal cells
9. found on the palms and soles
10. lubricates the hair and skin and inhibits the growth of bacteria
12. consists of cells displaced from the stratum spinosum
13. consists of an interwoven meshwork of dense, irregular connective tissue
14. less common cancer that involve superficial layers of epidermal cells
17. a peg of connective tissue containing capillaries and nerves
18. a brown, yellow-brown, or black pigment formed by melanocytes
20. only in thick skin
22. extend into the dermis, increasing the area of contact between the dermis and epidermis