Chapter 1 (Integumentary System) Flashcards
What is the best indicators of general health?
The skin
The skin helps provide:
- Protection from environmental effects
- Containment for body structures and vital substances
- Prevents dehydration
- Thermal regulation
- Sensation
- Synthesis and storage of vitamin D
Epidermis
- Keratinized epithelium
- Provides protective outer surface
- Avascular
Dermis
- Dense layer of collagen and elastic fibers
- Fibers provide skin tone and account for strength and toughness of skin
- Vascular
The skin is supplied with _____ that are sensitive to touch, irritation/pain, and tempurature.
Afferent nerve endings
Specialized structures of the skin
- Hair follicles
- Arrector muscles of hairs
- Sebaceous glands
- Sweat glands
- Arterioles
- Superficial capillary beds
Where is the subcutaneous tissue (superficial fascia) located?
Between the dermis and deep fascia
(Subcutaneous tissue)
Composed of
Loose connective tissue and stored fat
(Subcutaneous tissue)
Contains
Sweat glands, superficial blood vessels, lymphatic vessels, and cutaneous nerves
Subcutaneous tissue does what?
- Provides most of body’s fat storage
- Participates in thermoregulation (insulation)
- Protects the skin form compression by bony prominences
Cyanosis:
Skin appears bluish secondary to lack of oxygen in the blood
Erythema
Skin appears abnormally red due to an injury, exposure to excess heat, infection, inflammation, or allergic reactions
Jaundice
Skin appears yellow caused by liver disorders
Fascias
The wrapping, packaging, and insulating materials of the deep structures of the body
Deep fascia
Dense connective tissue layer that covers most of the body deep to the skin and subcutaneous tissue
