Integumentary System. Integumentary Organ System . integumentum = latin for covering protects the body from damage organs include skin, hair, scales, nails. How does it protect?. waterproofs cushions the deeper layers of the body excretes wastes regulates temperature
Integumentary Organ System • integumentum = latin for covering • protects the body from damage • organs include skin, hair, scales, nails
How does it protect? • waterproofs • cushions the deeper layers of the body • excretes wastes • regulates temperature • sensor for pain pressure and temperature
4 Types of Membranes • Serous membranes • Mucous membranes • Cutaneous membranes • Synovial membranes
Serous membranes Line body cavities that lack openings to the outside.
Mucus Membranes Line the cavities and tubes that open to the outside of the body.
Cutaneous membranes Cover the outside of the body.
Synovial membranes Line the joint cavities between the ends of bones at free moving (synovial) joints.
Epidermis • Epidermis is made of stratified squamous epithelium.
Skin Cancer • Cutaneous carcinomas in upper layer • Cutaneous melanomas in lower epidermis
Dermis • Dermis is made of connective tissue, epithelial tissue, smooth muscle tissue, nervous tissue, and blood.
Hypodermis • composed of loose connective tissue and adipose tissue • functions: -conserves heat -carries major blood vessels
Glands • Sebaceous (associated with hair) • Nails (keratinized cells) • Sweat (exocrine) -apocrine (pitsl) -eccrine (forehead, neck, back)
Your Task: • Draw or create a model of the integumentary system. Include the following: • Hair -Erector pili muscle • Epidermis -Melanocyte • Dermis -adipose cells • Sweat gland -Subcutaneous layer (hypodermis) • Blood vessels (in the correct layer) • Sensory receptor (touch receptor) • Sebacious Gland You will use this on your quiz, scheduled for Monday. You can include name labels on your visual.
Skin Video • http://www.youtube.com/watch?v=yKAzVC0WcmI