Textbook Question
The two major components of the dermis are the
(a) Superficial fascia and cutaneous membrane
(b) Epidermis and subcutaneous layer
(c) Papillary layer and reticular layer
(d) Stratum basale and stratum corneum
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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 17
What widespread effects does epidermal growth factor (EGF) have on the integument?
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Understand that epidermal growth factor (EGF) is a protein that stimulates cell growth, proliferation, and differentiation by binding to its receptor on the cell surface.
Recognize that in the integument (skin), EGF primarily affects keratinocytes, the predominant cell type in the epidermis, promoting their division and migration.
Identify that EGF accelerates wound healing by stimulating epidermal regeneration and enhancing the repair process of damaged skin.
Note that EGF also influences the production of extracellular matrix components, which supports skin structure and integrity.
Summarize that the widespread effects of EGF on the integument include increased epidermal thickness, faster wound closure, and improved skin renewal and repair.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Epidermal Growth Factor (EGF)
EGF is a protein that stimulates cell growth, proliferation, and differentiation by binding to its receptor on the cell surface. It plays a critical role in skin repair and regeneration by promoting the division of epidermal cells.
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Other Epidermal Cells
Integument Structure and Function
The integument refers to the skin and its appendages, serving as a protective barrier. Understanding its layers—epidermis, dermis, and hypodermis—is essential to grasp how EGF influences skin health and healing.
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06:04Functional Groups
Cellular Effects of EGF on Skin
EGF triggers keratinocyte proliferation, enhances wound healing, and stimulates the production of extracellular matrix components. These effects lead to improved skin regeneration, thickness, and overall maintenance of the integument.
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1:32Effects of the Complement System
Related Practice
Textbook Question
In which layer(s) of the epidermis does cell division occur?
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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
The cutaneous plexus and subpapillary plexus consist of
a. Blood vessels providing the dermal blood supply.
b. A network of nerves providing dermal sensations.
c. Specialized cells for cutaneous sensations.
d. Gland cells that release cutaneous secretions.
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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?