1 / 15

Catalyst Questions

Catalyst Questions. What is the purpose of the structures listed: Nail body Dermal Papilla Lunule Hair Bulb Cortex Hair Root Medulla Hair Shaft Cuticle of hair Hair Follicle Cuticle of nail Today’s Lesson Topic to add to interactive notebook: Glands!. Cutaneous Glands.

hedwig-hubbard
Télécharger la présentation

Catalyst Questions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Catalyst Questions • What is the purpose of the structures listed: • Nail body Dermal Papilla • Lunule Hair Bulb • Cortex Hair Root • Medulla Hair Shaft • Cuticle of hair Hair Follicle • Cuticle of nail • Today’s Lesson Topic to add to interactive notebook: Glands!

  2. Cutaneous Glands Mr. Z

  3. Want extra credit? • Bring in boxes of tissue • Worth 5 points per box • For a total of 15 points (can only bring in three)

  4. What’s Going On In Science?

  5. As we continue remember WHY this class is important to YOU

  6. Objectives • You will be able to name two types of sweat glands and describe the structure and function of each. • You will be able to describe the location, structure, and function of sebaceous glands.

  7. Cutaneous Glands • The skin has five types of glands • We’re only going to focus on two types: • Sweat Glands • Sebaceous Glands

  8. Sweat Glands • Sweat glands, or sudoriferous glands, are of two kinds • Merocrine • Apocrine

  9. Merocrine Glands • AKA eccrine glands • the most numerous type of gland and produce watery perspiration that serves primarily to cool the body • About 3-4 million of them in our body It is a simple tubular gland with a duct leading to a sweat pore on the skin surface. • The duct is lined by a stratified cuboidal epithelium in the dermis and by keratinocytes in the epidermis. Merocrine Gland

  10. Apocrine Glands • Occur in the groin, anal region, axilla, and areola and in mature males, they also occur in the beard area. • Their ducts lead into nearby hair follicles rather than opening directly onto the surface. • The lumen of the apocrine gland is much larger than that of the merocrine gland

  11. Apocrine Glands, cont’d • Apocrine sweat is thicker and milkier than sweat • Respond especially to stress and sexual stimulation. • Do not develop until puberty • Function is to secrete chemicals called sex phermones, which exert subtle effects on the sexual behavior and physiology of other people.

  12. Sebaceous Glands • Produce an oily secretion called sebum. • They are flask shaped, with short ducts that usually open unto a hair follicle. • They have very little visible lumen. • Their secretion consists of broken-down cell that are replaced by mitosis at the base of the gland. Sebum keeps the skin and hair from becoming dry, brittle, and cracked. • The sheen of well-brushed hair is due to sebum distributed by the hair brush

  13. Sebaceous Glands Sebaceous Glands

  14. Sketches • In you A&P atlas , you should sketch and then label the following glands, make sure to include function!!: • An apocrine gland • A merocrine gland • A sebaceous gland

  15. Independent Work/Homework • Skin diagram cut out/label • Gland half sheet– answers need to be done on EVEN pages • This then needs to be added to your table of contents • REMEMBER we do this everyday so that we are organized!! • Make sure to bring colored pencils for our drawings, you WILL NEED them next time.

More Related