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Questions and Answers
What is the primary function of the skin?
What is the primary function of the skin?
Which type of wound is characterized by a clean cut and little to no tissue damage?
Which type of wound is characterized by a clean cut and little to no tissue damage?
What type of wound involves all layers of skin, including fat and fascia, and may expose bone?
What type of wound involves all layers of skin, including fat and fascia, and may expose bone?
Which of the following wounds is most likely to be liable for infection?
Which of the following wounds is most likely to be liable for infection?
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What distinguishes a penetrating wound from a perforating wound?
What distinguishes a penetrating wound from a perforating wound?
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Which type of wound is characterized by extravasation of blood and plasma due to damaged blood vessels?
Which type of wound is characterized by extravasation of blood and plasma due to damaged blood vessels?
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What is a common treatment approach for abrasions?
What is a common treatment approach for abrasions?
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Which classification of wounds includes injuries that involve only the epidermis?
Which classification of wounds includes injuries that involve only the epidermis?
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Study Notes
Skin: structure and function
- The skin is the largest organ of the body.
- The primary function of the skin is protection.
- The skin has several layers:
- Outer epidermis
- Dermis, containing the capillary network
- Subcutaneous layer (hypodermis, adipose layer)
Skin: structure and function (cont.)
- The thickness of the skin varies, from thin at internal flexures (e.g. elbows) to thicker at the soles of the feet.
- Hair follicles, sebaceous glands, and sweat glands pass through the epidermis, but originate in the dermal layer.
Wounds
- A wound is a cut or break in the continuity of any tissue, caused by injury or operation.
Classifying Wounds
- Wounds may be classified according to the number of skin layers involved:
- Superficial: Involves only the epidermis
- Partial Thickness: Involves the epidermis and the dermis
- Full Thickness: Involves the epidermis, dermis, fat, fascia, and exposes bone
Types of Wounds
-
Closed Wounds (Blunt Injuries):
- Abrasions: partial denusion of the superficial layers of skin due to friction against a rough surface.
- Clinical Presentation (C/P): Painful raw surface.
- Treatment (ttt): Antibiotic, daily dressing
- Contusion (ecchymosis): extravasations of blood, plasma through damaged blood vessels.
- C/P: Painful swelling, ecchymotic skin.
- ttt: Fomentation (cold in the first 24 hours), elevation.
- Abrasions: partial denusion of the superficial layers of skin due to friction against a rough surface.
-
Open Wound:
-
Incised Wound: Made by a sharp instrument.
- Tissue Damage: little or no tissue damage
- Edges: Clean cut
- Bleeding: Severe bleeding
- Infection: No infection
-
Lacerated Wounds: Made by a blunt instrument.
- Tissue Damage: Severe damage
- Edges: Crushed
- Bleeding: Little bleeding
- Infection: Liable for infection
- Crushed Wound: More extensive lacerated wound caused by war injuries.
-
Penetrating Wound:
- Perforating: Has an inlet and outlet.
- Punctures: Only an inlet.
-
Incised Wound: Made by a sharp instrument.
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Description
This quiz explores the structure and function of the skin, focusing on its layers and protective roles. Additionally, it covers the classification of wounds based on the skin layers involved, providing a comprehensive understanding of wound types. Test your knowledge on these essential topics in human anatomy.
