Anatomy

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What is the structure of skin?
- 1.5- 2m²thick
- Makes up 7-8%
- Layers:
- Epidermis
- Dermis
- *Subcutaneous (not skin)
What is the function of skin?
- Protective
- Prevents water loss
- Temperature regulation
- Metabolic Regulation (vitamin d)
- Immune defense
- Sensory Reception
- Excretion by means of Secretion (getting rid of waste)
What are the derivitaves (Accessory organs) of skin?
- Glands (Sweat)
- Hair
- Nails
What is the EPIDERMAL STRATA?
- From basement membrane to its surface, reveals several layers or strata.
- Deep to superficial:
- Stratum basale
- Stratum spinosum
- Stratum granulosum
- Stratum lucidum (thick skin only)
- Statum corneum
Where is thick skin located?
- Palms of hands
- Soles of feet
- Fingers and toes
- *Contains sweat glands, no hair follicles or sebaceous glands.
Where is thin skin located?
- Covers most of the body. the epidermis lacks the stratum lucidum, so it only has 4 layers.
- Contains:
- hair follicles,
- sebaceous glands and
- sweat glands.
What are the layers of the EPIDERMIS
- Stratum corneum
- Stratum lucidum
- Stratum granulosum
- Stratum spinosum
- Stratum basale
What are the layers of the DERMIS?
- Papillary layer
- Reticular layer
Where is the SUBCUTANEOUS layer located?

Not considered part of the integument; deep to the dermis; composed of areolar connective tissue and adipose connective tissue
What are the characteristics of the Nail?
- Nail body
- Free edge
- Lunula
- Nail folds
- Nail groove
- Eponychium (cuticle)
What are the 3 zones along the length of a hair?
- Hair bult
- Root
- Shaft
What are the functions of hair:
- Protection
- Heat Retention
- Facial Expression
- Sensory Reception
- Visual Identification
- Chemical signal dispersal

Author

Getrebekah

33045

Card Set

Anatomy

Description

Integumentary System

Updated

2010-09-06T22:05:05Z

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