Skin and Body Membranes
Function of body membranes
– Line or cover body surfaces
– Protect body surfaces
– Lubricate body surfaces
Classification of Body Membranes
The integumentary system
It comprises the skin and its appendages, acting as a physical barrier between the
external environment and the internal environment that it serves to protect and
maintain.
, Skin
• It is composed of two different layers:
– Epidermis: made up of keratinized stratified squamous epithelium, it is
avascular layer
– Dermis: it is composed of vascularized dense irregular connective tissue and
loose areolar tissue
Skin appendages
– Sweat glands
– Sebaceous glands
– Hair
– Nail
Function of body membranes
– Line or cover body surfaces
– Protect body surfaces
– Lubricate body surfaces
Classification of Body Membranes
The integumentary system
It comprises the skin and its appendages, acting as a physical barrier between the
external environment and the internal environment that it serves to protect and
maintain.
, Skin
• It is composed of two different layers:
– Epidermis: made up of keratinized stratified squamous epithelium, it is
avascular layer
– Dermis: it is composed of vascularized dense irregular connective tissue and
loose areolar tissue
Skin appendages
– Sweat glands
– Sebaceous glands
– Hair
– Nail
