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. We continued talking about glands as we discussed acne vulgaris which is when a sebaceous gland gets clogged and produces bacteria and a raised surface. This is hormone related. Then we talked about mammary glands which are a modified sweat gland. We watched a couple video clips reviewing accessory organs and introducing wound healing.
Homework - 11 question quiz on the nail and skin diagrams tomorrow. Today's worksheet and the key for the skin diagram assigned this week is located below. - The test on the integumentary system is scheduled for Friday.
Objectives - Students will identify locations and functions of accessory organs of the skin.