1. Do Now 9/8/14
What are the layers of the epidermis from most superficial to most deep?
What are the layers of the dermis from most superficial to most deep?
In which dermis sublayer can the hair follicle and glands be found?
How can the glands in the integument be classified – exocrine or endocrine? Defend your answer.

2. Exocrine Glands Sebaceous Glands Sweat Glands
Apocrine: Armpit
Sweat Glands
Located in reticular layer of dermis
Contain sweat gland duct
Sebaceous Glands
Oily, waxy secretion of sebum onto hair follicle and hair itself
Stimulated by hormones around puberty
Lubricates skin and hair from becoming dry, brittle, cracked
Merocrine
Most numerous
Secretes sweat directly on skin’s surface
Apocrine
Release secretions into hair follicles in the axillary, pubic, and anal regions
Secretion is viscous and cloudy and has a distinct noticeable odor (begins around puberty)

3. Explain why adolescents have greasy skin when they hit puberty
Explain why adolescents have greasy skin when they hit puberty. Which gland(s) is/are responsible for teenagers’ oily appearance? When you apply deodorant, it is designed to mask your B.O. Which gland is responsible for these smelly secretions? And why do you smell so bad?

4. Exit Ticket
What type of sweat gland activity are we measuring? (Type of gland – be specific) Defend your answer.
How did sweat gland activity compare between activities when the environmental temperature was changed or the body temperature was changed?

5. Homework Integumentary Poster due Wed
Label hair follicle and its corresponding structures
Include 1-2 sentences describing the purpose of hair
Label sweat and sebaceous glands
Include 1-2 sentences comparing merocrine and apocrine glands
Sweat Gland Distribution Lab due Wed
Test on Friday