Internal Features of the skin Learning Target: Describe the characteristics of the dermis. (knowledge) Structure 1.Skin (cutaneous membrane) b. Dermis (Tissues) -Dense irregular Function Gives the skin toughness and elasticity Structure 1.Skin (cutaneous membrane) b. Dermis (Tissues) -Simple and stratified cuboidal Function Makes up sweat and sebaceous (oil) glands Structure 1.Skin (cutaneous membrane) b. Dermis (Tissues) -Smooth muscle Function Constricts blood vessels to regulate temperature Makes up tissue of arrector pili muscle Structure 1.Skin (cutaneous membrane) b. Dermis (Tissues) -Nervous -Blood Function transmits messages supplies nutrients to the skin cells regulates temperature Structure 1.Skin (cutaneous membrane) b. Dermis (Tissues) -Stratified squamous Function Makes up hair follicles Hair shaft Basement membrane Sweat Gland Pore Epidermis Dermis Sweat gland Sweat Gland Duct Hair follicle Blood vessels Arrector Pili muscle Sebaceous Gland Sense Receptor Dermal Papilla 1. Epidermis 2. Dermis What layers/tissues do you see? 3. Dense Irregular 4. Simple cuboidal 5. Stratified squamous keratinized 6. Stratified cuboidal 1. A sebaceous gland is made of simple or stratified cuboidal epithelial tissue 2. Sweat glands are made of Simple or stratified cuboidal 3. Whats this? Dense irregular 4. Tissue type? Smooth muscle Structure c. Subcutaneous Layer (not a true layer of skin) Tissues: -Loose connective Function Binds skin to underlying organs Structure c.Subcutaneous Layer Tissues: -Adipose Function Insulation, conserves body heat Structure c.Subcutaneous Layer Tissues: -Blood Function Supplies nutrients to cells Hair shaft Basement membrane Sweat Gland Pore Epidermis Dermis Sweat gland Sweat Gland Duct Hair follicle Blood vessels Arrector Pili muscle Sebaceous Gland Sense Receptor Dermal Papilla Subcutaneous Layer Adipose