Textbook Question
Why is it important for a surgeon to choose—when possible—an incision pattern according to the skin's tension lines?
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Ch. 5 The Integumentary System
Martini, Nath, Bartholomew11th EditionFundamentals of Anatomy & PhysiologyISBN: 9780136874089
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Table of contents
- Ch. 1 An Introduction to Anatomy and Physiology26
- Ch. 2 The Chemical Level of Organization34
- Ch. 3 The Cellular Level of Organization30
- Ch. 4 The Tissue Level of Organization24
- Ch. 5 The Integumentary System17
- Ch. 6 Bones and Bone Structure36
- 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 Senses16
- Ch. 18 The Endocrine System20
- Ch. 19 Blood31
- Ch. 20 The Heart31
- Ch. 21 Blood Vessels and Circulation29
- Ch. 22 The Lymphatic System and Immunity31
- Ch. 23 The Respiratory System12
- Ch. 24 The Digestive System18
- Ch. 26 The Urinary System31
- Ch. 27 Fluids & Electrolytes32
- Ch. 28 The Reproductive System12
- Ch. 29 Development and Inheritance23
Martini, Nath, Bartholomew11th EditionFundamentals of Anatomy & PhysiologyISBN: 9780136874089Not the one you use?Change textbook
Chapter 5, Problem 29a
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?
Verified step by step guidance1
Understand that sunlight exposure helps the skin produce vitamin D, which is crucial for bone health.
Recognize that vitamin D increases the absorption of calcium and phosphate from the digestive tract into the bloodstream.
Know that calcium and phosphate are essential minerals required for the mineralization and strengthening of bone tissue.
Connect that without sufficient vitamin D from sunlight, calcium absorption decreases, leading to weaker bones and potential growth issues in children.
Summarize that sunlight promotes bone maintenance and growth by enabling vitamin D synthesis, which in turn facilitates proper mineral absorption necessary for healthy bone development.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Role of Sunlight in Vitamin D Synthesis
Sunlight, specifically UVB rays, triggers the skin to produce vitamin D, which is essential for calcium absorption. Without adequate sunlight exposure, vitamin D levels drop, impairing bone health.
Vitamin D and Calcium Absorption
Vitamin D enhances the intestines' ability to absorb calcium from food, a critical mineral for bone formation and strength. Proper calcium absorption ensures bones grow and maintain their density.
Bone Growth and Maintenance in Children
During childhood, bones are actively growing and remodeling, requiring sufficient nutrients like calcium and vitamin D. Adequate sunlight exposure supports this process by facilitating vitamin D production, promoting healthy bone development.
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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
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?