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. What’s 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