3 Membranes and the Integumentary System Lesson 3.1: Body Membranes Lesson 3.2: The Integumentary System Lesson 3.3: Injuries and Disorders of the Skin
Chapter 3: Membranes and the Integumentary System Lesson 3.1 Body Membranes
Body Membranes epithelial membranes connective tissue membranes mucous membranes serous membranes cutaneous membranes connective tissue membranes synovial membranes
Epithelial Membranes mucous membranes serous membranes line cavities open to the environment serous membranes line cavities not open to environment cutaneous membranes form what we know as skin
Mucous Membranes and Serous Membranes
Connective Tissue Membranes synovial membrane capsule around synovial joint tendon sheath synovial fluid
Review and Assessment Match these words with 1–4 below: synovial, mucous, cutaneous, serous. 1. line cavities open to the environment 2. line cavities not open to the environment 3. tendon sheath 4. form skin
The Integumentary System Chapter 3: Membranes and the Integumentary System Lesson 3.2 The Integumentary System
The Integumentary System functions of the integumentary system anatomy of the skin appendages of the skin
Functions of the Integumentary System protects against abrasion chemical damage drying out UV radiation damage regulates body temperature
Functions of the Integumentary System
Anatomy of the Skin epidermis dermis hypodermis
Layers of the Epidermis
Review and Assessment True or False? 1. The dermis is the superficial layer of the skin. 2. The skin helps regulate body temperature. 3. The epidermis has three layers. 4. The hypodermis is above the dermis. 5. The skin protects against UV radiation.
Epidermal Cells keratinocytes epidermal dendritic cells Merkel cells produce keratin, form layers of epidermis epidermal dendritic cells ward off infections Merkel cells touch receptors
Dermis dense, fibrous connective tissue papillary layer forms fingerprints reticular layer
Hypodermis fibrous connective tissue adipose tissue padding insulation energy storage
Appendages of the Skin sudoriferous (sweat) glands sebaceous glands eccrine apocrine sebaceous glands hair nails
Review and Assessment Fill in the blanks with: hypodermis, keratinocytes, sweat, or papillary. 1. Eccrine is a type of _______________ gland. 2. _______________ produce keratin. 3. Adipose tissue is found in the _______________. 4. The _______________ of the dermis forms fingerprints.
Injuries and Disorders of the Skin Chapter 3: Membranes and the Integumentary System Lesson 3.3 Injuries and Disorders of the Skin
Injuries and Disorders of the Skin injuries of the skin infections of the skin and membranes inflammatory conditions of the skin and membranes cancers of the skin
Injuries of the Skin decubitus ulcers burns bedsores caused by restricted blood supply burns first-, second- or third-degree caused by heat, chemicals, electricity or UV radiation rule of nines Suzanne Tucker/Shutterstock.com, JTeffects/Shutterstock.com, Naiyyer/Shutterstock.com
Infections of the Skin and Membranes viral infections herpes varicella herpes zoster herpes simplex virus type 1 or type 2 human papillomavirus warts Maksym Bondarchuk/Shutterstock.com
Infections of the Skin and Membranes fungal infections athlete’s foot jock itch ringworm toenail fungus bacterial infections impetigo cellulitis
Inflammatory Conditions of the Skin and Membranes pleurisy makes smooth surface of pleura rough peritonitis infection of peritoneum psoriasis involves redness and irritation Kenxro/Shutterstock.com
Cancers of the Skin basal cell carcinoma squamous cell carcinoma malignant melanoma ABCD rule Librakv/Shutterstock.com
Review and Assessment True or False? 1. Herpes zoster causes decubitus ulcers. 2. Peritonitis is an infection of the skin. 3. Impetigo is caused by a fungus. 4. Warts are caused by a virus. 5. Ringworm is caused by a fungus.