2. Cells and Tissues Sequence Histology Review and Lookalike Images II

3. Integumentary System and Mammary Gland

4. a b c d st. corneum st. granulosum st. spinosum st. basale

5. Papillary (PL) and Reticular (RL) Dermis Type III collagen > Type I collagen > Elastic fibers

6. Thin and Thick Skin

7. Lipid-rich epidermal permeability barrier

9. Membrane coating granules (MCG) (Lipid ceramide)

10. Basal cells and melanocytes (arrows)

11. Cells of the stratum basale

12. (1)(1) ( 2 ) ( 3 ) (1)Hair (2) Sebaceous gland (3) Arrector pili muscle

13. Pilosebaceous apparatus Hair follicle Sebaceous gland Arrector pile muscle (smooth muscle)

14. Hair follicle & DP: Dermal Papilla DP

15. Sweat gland duct

16. Eccrine sweat gland Sebaceous gland Hair follicle

17. Eccrine Sweat Gland Secretory portions and duct (Arrow heads indicate myoepithelial cells)

18. Apocrine Sweat gland Secretory portions and duct

19. Eccrine and apocrine sweat gland

20. Lobules in Inactive and active mammary gland Lactiferous duct

21. Apocrine sweat glandMammary gland