Me m

understanding ^Vo rds alb-, white: albinism—condition characterized by a lack of pigment. cut-, skin: subcutaneous—

beneath the skin. derm-, skin: dermis—inner layer of the skin. epi-, upon, after, in addition:

epidermis—outer layer of the skin. follic-, small bag: hair follicle— tubelike depression in which a hair develops. hol-, entire, whole: holocrine gland—gland discharges the entire cell containing the secretion. kerat-, horn: keratin—protein produced as epidermal cells die and harden. melan-, black: melanin—dark pigment produced by certain cells. por-, passage, channel: pore— opening by which a sweat gland communicates to the skin's surface. seb-, grease: sebaceous gland— gland that secretes an oily substance.

chapter objectives

After you have studied this chapter, you should be able to

1. Describe the four major types of membranes.

2. Describe the structure of the layers of the skin.

3. List the general functions of each layer of the skin.

4. Describe the accessory organs associated with the skin.

5. Explain the functions of each accessory organ.

6. Explain how the skin helps regulate body temperature.

7. Summarize the factors that determine skin color.

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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