1. The Integument Including … Epidermis -cells -keratinization
-basal lamina
Dermis
-cells, fibers, ground substance
-vascular specializations
Hypodermis
Specializations and Variations of Integument
-glands
-hair
-hoof, beak, claw
-dermal papilla and epidermal pegs

2. The Integument
epidermis
dermis
hair follicles
sweat glands
hypodermis

3. The Integument

4. The Epidermis

5. The Epidermis stratum corneum stratum granulosum stratum spinosum
stratum basale
dermal papilla with
capillary loop

6. The Integument

7. The Integument

8. Epidermis stratum lucidum Cells of the Epidermis Keratinocyte
Melanocyte
Dendritic cell (Langerhans cell)
Merkel cell
Free nerve endings

9. The Integument

10. The Integument duct of sweat gland cutaneous skeletal muscle fibers
Sebaceous oil gland

11. The Integument
simple, coiled tubular sweat gland

12. The Integument

13. The Integument

14. The Integument
primary and secondary fur (guard and insulation fur)

15. The Canine Situation
anal
sac

16. The Canine Situation glands of anal sac perianal sweat glands
smooth muscle sphincter
lymph nodule
recto-anal
junction

17. The Canine Situation
lumen of anal sac
glands of anal sac

18. The Canine Situation
#s 4 & 5 on diagram – canine anal sac on left and glands of anal sac on right

19. The Canine Situation smooth muscle
#6 on diagram – modified sweat glands

20. The Canine Situation circumanal glands
skeletal muscle of outer sphincter

21. The Feline Situation accessory gland not found in feline anal sac
canids
feline anal sac
skeletal muscle sphincter
smooth muscle sphincter

22. The Feline Situation enlargement of previous slide sebaceous
sero-mucous
‘regular’ glands
of anal sac

23. The Integument – Wrap-up
Life and times of fur/hair follicles – page 61
Blood vessels of the dermis – page 62