How much blood does the skin receive? - ANSWER 1/3 of the bodies blood volume
How often do humans shed and regrow outer skin cells? - ANSWER Every 27 days
What are the functions of the skin? - ANSWER 1. Protection from bacterial invasion
and against external elements (water, chemical and mechanical, bacterial and viral,
ultraviolet radiation).
2. Prevents excessive loss of fluids and electrolytes. Striving always for homeostatic
environment.
3. Produces sebum, a lipid rich, oily substance.
What is sebum, a lipid rich oily substance secreted by? - ANSWER Sebaceous glands
As sebum and sweat mix up on the skin surface, they form a protective layer often referred
to as the? - ANSWER The acid Mantle
The acid mantle gives the skin a particular level of acidity characterized by pH. What is the
skins PH? - ANSWER 4 to 5.5 (slightly acidic)
If the acid mantle balance is disrupted or loses its acidity, the skin becomes more prone to? -
ANSWER Damage and infection
1
, What are the functions/facts of melanin in our skin? - ANSWER 1. Protection against
UV rays.
2. Sun exposure increases melanin production.
3. Levels of melanin depend on race and amount of sunlight exposure.
Our skin senses the environment, what are the basic types of sensations? -
ANSWER Pain, touch, temperature, and pressure
Our skin retains water. What are the tightly packed cells called that provide protection
against water loss? - ANSWER Stratham corneum
When white blood cells in the skin capture and destroy bacteria invading the epidermis? -
ANSWER Immunological response
The epidermis has 5 layers composed of epithelial cells. What are they? - ANSWER 1.
Stratham corneum.
2. Stratham lucidum.
3. Stratham Granulosum
4. Stratham spinosum.
5. Stratham germinativum
Of the epidermis, what is the superficial layer of dead skin cells called? It is the outermost
layer. - ANSWER Strathum corneum (horny layer)
Of the epidermis, what is the clear layer of cells called? Only present in thick skin. -
ANSWER Strathum lucidum
Of the epidermis, which layer is multi layered, 1-5 cells thick, cells become compressed, and
aids in keratin formation? - ANSWER Strathum granulosum
2
How often do humans shed and regrow outer skin cells? - ANSWER Every 27 days
What are the functions of the skin? - ANSWER 1. Protection from bacterial invasion
and against external elements (water, chemical and mechanical, bacterial and viral,
ultraviolet radiation).
2. Prevents excessive loss of fluids and electrolytes. Striving always for homeostatic
environment.
3. Produces sebum, a lipid rich, oily substance.
What is sebum, a lipid rich oily substance secreted by? - ANSWER Sebaceous glands
As sebum and sweat mix up on the skin surface, they form a protective layer often referred
to as the? - ANSWER The acid Mantle
The acid mantle gives the skin a particular level of acidity characterized by pH. What is the
skins PH? - ANSWER 4 to 5.5 (slightly acidic)
If the acid mantle balance is disrupted or loses its acidity, the skin becomes more prone to? -
ANSWER Damage and infection
1
, What are the functions/facts of melanin in our skin? - ANSWER 1. Protection against
UV rays.
2. Sun exposure increases melanin production.
3. Levels of melanin depend on race and amount of sunlight exposure.
Our skin senses the environment, what are the basic types of sensations? -
ANSWER Pain, touch, temperature, and pressure
Our skin retains water. What are the tightly packed cells called that provide protection
against water loss? - ANSWER Stratham corneum
When white blood cells in the skin capture and destroy bacteria invading the epidermis? -
ANSWER Immunological response
The epidermis has 5 layers composed of epithelial cells. What are they? - ANSWER 1.
Stratham corneum.
2. Stratham lucidum.
3. Stratham Granulosum
4. Stratham spinosum.
5. Stratham germinativum
Of the epidermis, what is the superficial layer of dead skin cells called? It is the outermost
layer. - ANSWER Strathum corneum (horny layer)
Of the epidermis, what is the clear layer of cells called? Only present in thick skin. -
ANSWER Strathum lucidum
Of the epidermis, which layer is multi layered, 1-5 cells thick, cells become compressed, and
aids in keratin formation? - ANSWER Strathum granulosum
2
