A&P Unit 4 – Integumentary System Cover Sheet
The Integumentary system consists of three divisions – epidermis, dermis, hypoderms – that have specialized structures
and functions which combine to form a protective barrier for the entire body.
Use these statements to guide your learning and studying in this unit:
1. Define all vocabulary words. (BLM 1)
2. Describe the functions of the skin. (BLM 1)
3. Describe the three major divisions of the spin (epidermis, dermis, hypodermis), and explain the major anatomy
and physiology of each division. (BLM 1 -3)
4. Name the five layers of the epidermis, and describe the unique structural characteristics of each layer. Relate
the structure of each layer to its function. State the cell types found in each layer, and whether those cells are
alive or dead. (BLM 1-3)
5. Label the five layers of the epidermis on a diagram. (BLM 1)
6. Explain what causes skin pigmentation from an anatomy and physiology perspective. (BLM 1-3)
7. Describe the structure, function, purpose and locations of the various accessory organ structures in the dermis
(hair, glands, nerve endings, dermal papillae). (BLM 1-4)
8. Compare and contrast eccrine, apocrine and sebaceous glands. (BLM 3)
9. Identify which nerve receptors respond to which particular type of stimulus. (BLM 1)
10. Explain the process your body goes through in order to regulate a too-low temperature. (BLM 4)
11. Explain the process your body goes through in order to regulate a too-high temperature. (BLM 4)
12. Compare and contrast 1st, 2nd, and 3rd degree burns in terms of layers of skin involved, short term and long term
damage. (BLM 1-3)
13. Describe the symptoms, causative agent, affected areas, and prognosis for various diseases of the skin (acne,
contact dermatitis, tinea, warts, impetigo, chickenpox, ulcers, psoriasis, skin cancer). (BLM 1 – 4)
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Integumentary
Epidermis
Dermis
Hypodermis
Subcutaneous
Stratum basale
Stratum spinosum
Stratum granulosum
Stratum lucidum
Stratum corneum
keratinocytes
Keratin
Melanocyte
Pigment
Melanin
Carotene
Cuticle
Lunula
Accessory organ
Hair follicle
Vellus hair
Terminal hair
Eccrine gland
Apocrine gland
Sebaceous gland
Sebum
Arrector pili muscle
Meissner’s corpuscles
Pacinian corpuscles
Root hair plexus
Free nerve endings
Dermal papillae
Thermoreceptors
Hypothalamus
Burns
Acne vulgaris
Chicken pox
Tinea
Warts
Impetigo
Contact dermatitis
Basal cell carcinoma
Squamous cell carcinoma
Melanoma