Skin 1 Flashcards
What is the largest, most visible organ of the body?
Skin
What is the main function of the skin?
Protection of internal organs from external environment
What does the skin excrete? think about when you’re sweating - what is released when sweating?
Salts, water and organic waste
What does the skin produce to protect underlying tissue from UV radiation? It is also responsible for pigmentation.
Melanin
What does the skin produce to protect against abrasion and serves as a water repellent?
Keratin/sebum
What tissues make up the skin?
Epithelial, nervous, connective and muscle tissue (composite organ)
What are the 3 primary layers of the skin?
Epidermis
Dermis
Hypodermis
This layer is a stratified, avascular barrier that is made mostly made of keratinocytes.
Epidermis
This is a vascular layer made of protein fibres that provide nourishment and strength to the skin.
Dermis
This is a layer made of adipose tissue and adipocytes (main cell types)
Hypodermis
What are the two layers that make up the cutaneous skin?
Dermis and epidermis
What is the layer that makes up the subcutaneous skin?
Hypodermis
What are the 2 layers of the dermis?
Papillary and reticular layer
What tissue type dominates in the epidermis?
Epithelial tissue
What are the 2 types of epithelia in the epidermis?
Simple and stratified epithelia.