Anatomy and Physiology - Skin and Appendages 0.0 / 5 ? OtherCanine AnatomyUniversityNone Created by: abownCreated on: 18-10-19 17:15 What parts of the body make up the Integumentary system? Skin, hair, glands, claws 1 of 24 What is the role of the integumentary system? Protective barrier (reduced water loss, invasion from microbes, abrasive trauma), metabolic actions, excretion of wastes, thermoregulation, sensory receptor 2 of 24 What is the body's reaction to being too hot? Vasodilation, sweating, pilorelaxation and stretching out. 3 of 24 What is the body's reaction to being too cold? Vasoconstriction, shivering, piloerection and curling up 4 of 24 What do the sensory receptors in the skin respond to? Pain, sensation, pressure and temperature 5 of 24 What are the three layers of the skin? Epidermis, dermis and hyperdermis 6 of 24 What are the 5 layers of the epidermis (from top of the skin to the demal layer) Stratum corneum, Stratum Lucidum, Stratum granulosum, Stratum spinosum and Stratum basale. 7 of 24 Describe the Stratum basale. Undifferentiated, mitotically active, close to underlying dermis 8 of 24 Describe the Stratum spinosum. Site of keratinisation 9 of 24 Describe the Stratum granulosum. Spindle shaped cells, basophilic keratohyalin granules 10 of 24 Describe the Stratum lucidum. Dead, flattened kerinocytes 11 of 24 Describe the Stratum corneum. Dead, flattened cels, filled with keratin, continuously replaced, prevents evaporation and absorbs water 12 of 24 Describe the process of keratinisation Stratum basale cells mitose, Push superficial layers further from nutrients, Cells flatten and die, Dense matt of keratin remains 13 of 24 What is found in the dermis? Arteries, veins, capillaries, lymphatics, sympathetic nerves and sensory nerves 14 of 24 What are the two layers within the dermis? Papillary layer and reticular layer 15 of 24 What is the papillary layer made of? Interdigitate with epidermal pegs, increased surface area 16 of 24 What is the reticular layer made of? Dense connective tissue, thick bundles of in 17 of 24 What is the function of the hyperdermis? Insulation, anchoring of the skin, protection against trauma, movement of the skin and fat storage 18 of 24 How does hair stand up? Arrector pili muscles contract 19 of 24 What is the sebaceous gland? A gland that secretes sebum, empties into hair follicle, arrector pili contraction compresses gland 20 of 24 What is the function of sebum? Softens and lubricates skin, bactericidal 21 of 24 What is the function of the sudoriferous gland? Sweat glands, releases heat 22 of 24 What is a tendon? What is its function? Connecting muscle to bone, aids movement 23 of 24 What is a ligament? What is its function? Attaches bone to bone, maintains joint stabilty 24 of 24
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