Augumentary System

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What is the outer layer of the skin called?
Epidermis
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What is the deeper layer of the skin called?
Dermis
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What layer of the epidermis contains dead cells and sloughs off?
Stratum Corneum
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What layer of the epidermis is constantly undergoing mitosis?
Stratum Basale
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What layer of the epidermis contains the most keratin and is only found in thick layer
Stratum Lucidum
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What layer of the epidermis produces a lipid rich secretion
Stratum Granulosum
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What is the hypodermis?
The hypodermis anchors skin to underlying tissue. It is mostly composed of adipose tissue.
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In order from the deepest to the top layer, what are the layers of the epidermis?
Stratum Basale, Stratum Spinosum, Stratum Granulosum, Stratum Lucidum, Stratum Corneum
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What layer of the dermis contains blood vessels and regulates temmperature?
Papillary Layer.
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What is a Merkel Cell?
oval-shaped mechanoreceptors involved in the sensation of touch
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What is keratin?
A tough, fibrous protein
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What is the role of normal flora?
To protect hair and skin from drying out, as well as possessing antibacterial properties due to its low pH.
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List some of the structures found in the dermis
blood vessels, pacinian corpuscle, sebaceous glands, hair follicles.
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Name the cells found in the skin that also function as cells of the immune system and protect the skin from pathogenic organisms
Langerhans Cells.
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What is vasoconstriction?
the process by which blood vessels get smaller and further away from the top of the skin in order to reduce blood flow and restrict heat loss
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What is vasodilation?
the process by which blood vessels dilate and get closer to the skin in order to increase heat loss and increase blood flow in order to cool the body down.
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What is Hypothermia?
An extremely low body temperature
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What is Hyperthermia?
An extremely high body temperature
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What does shivering do for the body?
Generates heat when the body's temperature becomes too low.
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Where is the body's thermoregulatory centre located?
In the hypothalamus
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What receptors detect an increase or decrease of temperature in the environment?
Thermoreceptors
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Which pathway carries information TO the thermoregulatory control centre?
Afferent Pathway
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Which pathway conveys impulses AWAY from the thermoregulatory control centre
Efferent Pathway
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Give an example of an effector that LOWERS body temperature
Sweating, Vasodilation
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Give and example of an effector that INCREASES body temperature
Shivering, Vasoconstriction
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Card 2

Front

What is the deeper layer of the skin called?

Back

Dermis

Card 3

Front

What layer of the epidermis contains dead cells and sloughs off?

Back

Preview of the front of card 3

Card 4

Front

What layer of the epidermis is constantly undergoing mitosis?

Back

Preview of the front of card 4

Card 5

Front

What layer of the epidermis contains the most keratin and is only found in thick layer

Back

Preview of the front of card 5
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