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Skin and Its Appendages

Skin and Its Appendages. melanocyte. L/M: lies between basal cells, with thin and long processes which present amongst the cells of the stratum basale and stratum spinosum. E/M ： ① abundant in ribosomes,RER and Golgi complex; ② with membrane bound melanosomes.

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Skin and Its Appendages

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  1. Skin and Its Appendages

  2. melanocyte L/M: lies between basal cells, with thin and long processes which present amongst the cells of the stratum basale and stratum spinosum. E/M：① abundant in ribosomes,RER and Golgi complex; ② with membrane bound melanosomes. Function：protection from the hurt by UV light.

  3. Melanocyte

  4. Melaningranules

  5. Langerhans cell

  6. Langerhans cell

  7. 2.1 papillary layer Connective tissue. Abundant in capillaries, free nerve endings and tactile corpuscles. 2.2reticular layer dense connective tissues, consisting of bundles of collagen fibers, numerous elastic fibers, etc. containing blood vessels, nerve fibers ,lamellar corpuscles, sweat glands ,etc. 。

  8. tactilecorpuscle

  9. Lamellar corpuscle

  10. Lamellar corpuscle

  11. appendages of skin

  12. hair shafthair roothair bulb

  13. sebaceous gland

  14. sebaceous gland

  15. Sweat gland

  16. Key points 1) composition of the skin:epidermis,dermis and its appendages. 2) 5 layers of the epidermis, the epidermis: keratinocyte and unkeratinocyte. 3) 3 types of the unkeratinocyte and their functions. 4) 2 kinds of sweat glands and their secretions.

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