Class Summary - Today we talked about the accessory organs in the integumentary system. Hair grows in a folicle at the hair's root in the dermis. As the hair grows out of the follicle it gets keratinized and is called a hair shaft as it leaves the epidermis. Sweat glands are coiled and tube shaped. They are located in the dermis and excrete substances into a duct. We focused on a couple types of sweat glands (apocrine - sex attractant, eccrine - temperature, and cerumenous - earwax) and talked sebaceous glands that are located near hair and secrete oils that keep it keratinized and healthy. We also discussed nails and their anatomy in cluding the nail root, nail bed, lunula, nail body, cuticle and nail bed.. Students should be able to identify each feature.
Homework - None - The test on the integumentary system is scheduled for Tuesday of next week.
Objectives - Students will identify each accessory structure of the integumentary system.