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Integumentary System (Skin) (Functions: (Maintain homeostasis, Provide a…
Integumentary System (Skin)
Functions:
Maintain homeostasis
Provide a protective covering
Slow down water loss from deeper tissues
House sensory receptors ( feel things)
Make a lot of biochemicals
Eliminates small quantities of waste
Skin Layers:
Dermis (
D
o meio) - middle layer
Hypodermis (
Hy
mbaixo) - inner layer
Epidermis (
E
m cima) - outer layer
5 Layers of the Epidermis
Stratum Granulosum - mature cells (Adult)
Stratum Spinosum - maturing Cells (Teenager)
Stratum Basale/Basement Membrane (innermost) - new cells (Baby)
Stratum Lucidum - Dying; not in all body skin (Senior)
Stratum Corneum (uppermost) - dead cell layer (Dead Cell)
Lacks Blood Vessels
Most body areas only have 4 layers
Granulosum
Spinosum
Corneum
Basale