Anatomy - The integumentary System with 100- correct answers (graded A+).

Anatomy - The
integumentary System
with 100% correct
answers (graded A+)
The Integumentary System
1. Skin
2. Associated structures - answer 1. Skin: largest organ of the
body / Cutaneous membrane


2. Associated structures: 'appendages or accessory structures' Hair,
nails, glands


< Structure of the Skin >
- The skin consists of two primary layers.
1. Epidermis
2. Dermis
3. The underneath and supporting the dermis? - answer - The skin
consists of two primary layers.


1. Epidermis:
- Outermost portion
- Comprised entirely of stratified squamous epithelial cells
- Contains no blood vessels 'avascular'

, 2. Dermis:
- 'true skin'
- Connective tissue
- Contains blood vessels, nerves & glands


3. Subcutaneous layer.


< Epidermis >
1. Location?


2. Description
1) Composed of?
2) Vascular/Avascular?
3) Composed of several layers?


3. Two function? - answer 1. Location: Outermost portion of skin


2. Description
1) Composed of stratified squamous epithelium(vary in thickness)
2) Avascular: *Nourished by capillaries in the underlying dermis
3)
-> Stratum basale('germinativum'): deepest /*cells constantly
dividing to produce new epithelial cells that rise to surface / has
melanocytes -> *melanin
-> Stratum corneum: most superficial, highly keratinized, constantly
shed


3. *Function:
1) Protection from wear and tear, injury, and harmful substances