Epidermal Layers:Describe the differences between thick and thin skin and identify the ratio of layers of the epidermis in each. Explain the unique characteristics and functions of these layers.

Part A: Epidermis and Dermis
1. Epidermal Layers:Describe the differences between thick and thin skin and identify the ratio of layers of the epidermis in each. Explain the unique characteristics and functions of these layers.
2. Skin Color:Investigate the factors that influence skin color and provide examples of how changes in these factors can affect an individual’s skin tone.
3. Dermis Layer:What are the two layers of the dermis? What are three functions of the dermis layer? List at least two components found in the dermis.
Part B: Skin Appendages
1. Epidermal Ridges and Dermal Papillae:Explain the significance of epidermal ridges and dermal papillae in the formation of fingerprints.
2. Sweat Glands:Distinguish between sebaceous glands, merocrine (eccrine) sweat glands, and apocrine sweat glands. Describe the functions and locations of these glands in the skin.
Part C: Hair and Nails
1. Hair Follicle:Explain the role of each component in hair growth and maintenance: hair follicle, hair bulb, hair shaft, arrector pili muscle, and sebaceous gland.
2. Nail Structure: Describe the structure of a nail, including the nail plate, nail bed, cuticle, and nail matrix. Discuss the functions of nails and how they grow.

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