Podcast
Questions and Answers
What are papillae?
They fit into the surface of the skin and are part of the dermis.
How do papillae provide a method of identification?
They form unique ridges, creating fingerprints and footprints.
What is the proper name for sweat glands?
Sudoriferous glands.
Name 3 substances found in perspiration/sweat.
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What is the proper name for oil glands?
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What are the functions of oil glands?
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What is alopecia?
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List 7 functions of the skin.
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What happens when blood vessels dilate?
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What happens when blood vessels constrict?
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What does erythema indicate?
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What does jaundice indicate?
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What does cyanosis indicate?
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What are blisters or sacs full of fluid called?
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What are firm raised areas on the skin called?
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What are areas of dried pus and blood called?
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What are sacs filled with pus called?
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What are flat spots on the skin called?
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What are itchy, elevated areas with an irregular shape called?
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What is a deep loss of skin surface that may extend into the dermis?
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What is a closed sac, usually filled with semisolid material called?
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What is impetigo?
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What are verrucae?
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What is dermatitis?
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What is acne vulgaris?
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What is athlete's foot?
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What is psoriasis?
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What is ringworm?
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What is basal cell carcinoma?
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What is melanoma?
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Study Notes
Papillae and Identification
- Papillae are small projections that fit into the skin's surface and are part of the dermis.
- They create unique patterns that result in fingerprints and footprints, serving as methods of identification.
Glands in the Skin
- Sweat glands are formally known as sudoriferous glands, which produce perspiration containing water, salts, and body wastes.
- Oil glands, or sebaceous glands, maintain skin moisture and help fight infections.
Hair Loss and Skin Functions
- Alopecia refers to permanent hair loss, commonly affecting the scalp.
- The skin has seven functions: protection, storage, excretion, temperature regulation, sensory perception, production, and absorption.
Blood Vessel Response and Temperature Regulation
- Blood vessels dilate (expand) to help release excess heat, assisting in temperature regulation.
- Conversely, when blood vessels constrict (shrink), the body retains heat to maintain temperature.
Skin Disorders and Conditions
- Erythema indicates a reddish skin hue due to burns or blood vessel congestion.
- Jaundice presents as yellow discoloration from bile in the blood, often linked to liver or gall bladder issues.
- Cyanosis results in blue skin due to insufficient oxygen.
Skin Lesions and Their Characteristics
- Vesicles are blisters or sacs filled with fluid.
- Papules are firm, raised areas on the skin.
- Crusts represent areas with dried pus and blood.
- Pustules are sacs filled with pus.
- Macules are flat skin spots.
- Wheals are itchy, elevated areas with irregular shapes.
- Ulcers signify deep loss of skin, possibly extending into the dermis.
- Cysts are closed sacs, typically filled with semisolid material.
Skin Infections and Conditions
- Impetigo is a bacterial infection caused by streptococcus and staphylococcus, marked by red lesions on children's faces.
- Verrucae, or warts, arise from HPV, typically featuring rough, hard surfaces.
- Dermatitis is skin inflammation often triggered by allergic reactions.
- Acne vulgaris involves inflammation of sebaceous glands, commonly seen in teens.
Fungal Infections
- Athlete's foot is a contagious fungal infection leading to itchy skin, blisters, and cracks.
- Ringworm is another highly contagious fungal infection that appears as a flat or raised circle on the skin or scalp.
Skin Cancer Types
- Basal cell carcinoma is the slow-growing skin cancer originating in the basal cells of the dermis, characterized by pink or yellow lesions.
- Melanoma is the most dangerous form of skin cancer, presenting as brown, black, or pink lesions, and can develop from pre-existing moles.
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Description
Test your knowledge on the anatomy and functions of the skin, including papillae, glands, and temperature regulation. This quiz covers various aspects of skin health, disorders, and the unique roles skin plays in our body. Ideal for students learning about human biology.
