Textbook Question
Exposure to optimum amounts of sunlight is necessary for proper bone maintenance and growth in children.
(a) What does sunlight do to promote bone maintenance and growth?
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Ch. 5 The Integumentary System
Martini, Nath, Bartholomew12th EditionFundamentals of Anatomy and PhysiologyISBN: 9780137854011
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Table of contents
- Ch. 1 An Introduction to Anatomy and Physiology25
- Ch. 2 The Chemical Level of Organization34
- Ch. 3 The Cellular Level of Organization29
- Ch. 4 The Tissue Level of Organization24
- Ch. 5 The Integumentary System17
- Ch. 6 Bones and Bone Structure33
- Ch. 7 The Axial Skeleton11
- Ch. 8 The Appendicular Skeleton17
- Ch. 9 Joints13
- Ch. 10 Muscle Tissue12
- Ch. 11 The Muscular System28
- Ch. 12 Nervous Tissue18
- Ch. 13 The Spinal Cord, Spinal Nerves, and Spinal Reflexes22
- Ch. 14 The Brain and Cranial Nerves20
- Ch. 15 Sensory Pathways and the Somatic Nervous System17
- Ch. 16 The Autonomic Nervous System and Higher-Order Functions30
- Ch. 17 The Special Senses15
- Ch. 18 The Endocrine System21
- Ch. 19 Blood31
- Ch. 20 The Heart31
- Ch. 21 Blood Vessels and Circulation26
- Ch. 22 The Lymphatic System and Immunity25
- Ch. 23 The Respiratory System4
- Ch. 24 The Digestive System18
- Ch. 26 The Urinary System31
- Ch. 27 Fluids & Electrolytes30
- Ch. 28 The Reproductive System12
- Ch. 29 Development and Inheritance17
Martini, Nath, Bartholomew12th EditionFundamentals of Anatomy and PhysiologyISBN: 9780137854011Not the one you use?Change textbook
Chapter 5, Problem 23
Why is it important for a surgeon to choose—when possible—an incision pattern according to the skin's tension lines?
Verified step by step guidance1
Understand that skin tension lines, also known as Langer's lines, represent the natural orientation of collagen fibers in the dermis, which influence how the skin stretches and contracts.
Recognize that making incisions parallel to these tension lines tends to minimize the tension on the wound edges during healing, which promotes better alignment and reduces stress on the tissue.
Know that incisions made along tension lines typically result in less scarring because the wound edges are less likely to pull apart or gape, allowing for more efficient and aesthetically favorable healing.
Consider that choosing an incision pattern according to tension lines can also reduce postoperative complications such as wound dehiscence (opening) and improve overall functional and cosmetic outcomes.
Therefore, surgeons aim to align incisions with skin tension lines to optimize healing, minimize scarring, and enhance patient recovery.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Skin Tension Lines (Langer's Lines)
Skin tension lines, or Langer's lines, represent the natural orientation of collagen fibers in the dermis. Incisions made parallel to these lines tend to heal better and produce less scarring because they align with the skin's natural tension, reducing stress on the wound edges.
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Wound Healing and Scar Formation
The direction of an incision affects how the wound heals; incisions along tension lines experience less tension and mechanical stress, promoting faster healing and minimizing scar widening or hypertrophic scarring. Proper alignment helps maintain skin integrity and cosmetic appearance.
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Surgical Outcomes and Patient Recovery
Choosing incision patterns that follow skin tension lines improves surgical outcomes by reducing complications such as wound dehiscence and infection. It also enhances patient recovery by decreasing pain, improving functional and aesthetic results, and increasing overall patient satisfaction.
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Related Practice
Textbook Question
The fibrous protein that is responsible for the strength and water resistance of the skin surface is
(a) Collagen
(b) Eleidin
(c) Keratin
(d) Elastin
(e) Keratohyalin
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Textbook Question
List the four phases in the regeneration of the skin after an injury.
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Textbook Question
What two major layers constitute the dermis, and what components are in each layer?
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Textbook Question
In clinical practice, drugs can be delivered by diffusion across the skin. This delivery method is called transdermal administration. Why are fat-soluble drugs more suitable for transdermal administration than drugs that are water soluble?