Textbook Question
Name three changes that occur in the skin as one ages.
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Ch. 4 Skin and Body Membranes
Marieb13th EditionEssentials of Human Anatomy & PhysiologyISBN: 9780135624340
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Table of contents
- Ch. 1 The Human Body: An Orientation23
- Ch. 2 Basic Chemistry22
- Ch. 3 Cells and Tissues20
- Ch. 4 Skin and Body Membranes13
- Ch. 5 The Skeletal System38
- Ch. 6 The Muscular System26
- Ch. 7 The Nervous System26
- Ch. 8 Special Senses12
- Ch. 9 The Endocrine System24
- Ch. 10 Blood22
- Ch. 11 Cardiovascular System29
- Ch. 12 The Lymphatic System and Body Defenses21
- Ch. 13 The Respiratory System7
- Ch. 14 The Digestive System and Body Metabolism13
- Ch. 15 The Urinary System23
- Ch. 16 The Reproductive System15
Marieb13th EditionEssentials of Human Anatomy & PhysiologyISBN: 9780135624340Not the one you use?Change textbook
Chapter 4, Problem 11
From what types of damage does the skin protect the body?
Verified step by step guidance1
The skin protects the body from mechanical damage, such as cuts, abrasions, and impacts, by acting as a physical barrier. The outermost layer, the epidermis, is composed of keratinized cells that provide toughness and resilience.
The skin shields the body from chemical damage by preventing harmful substances, such as acids or toxins, from penetrating deeper tissues. The lipid barrier in the epidermis helps repel water-soluble chemicals.
The skin defends against microbial damage by serving as the first line of defense against pathogens. It produces antimicrobial peptides and houses immune cells that help combat infections.
The skin protects the body from ultraviolet (UV) radiation damage by producing melanin, a pigment that absorbs and dissipates harmful UV rays, reducing the risk of DNA damage in skin cells.
The skin helps prevent dehydration and thermal damage by regulating water loss through its barrier function and maintaining body temperature through sweat production and blood vessel dilation or constriction.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Barrier Function
The skin serves as a primary barrier that protects the body from external threats, including pathogens, chemicals, and physical abrasions. This barrier function is crucial for maintaining homeostasis and preventing infections, as it limits the entry of harmful microorganisms and substances.
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Chemical Barriers
Thermoregulation
The skin plays a vital role in thermoregulation, helping to maintain the body's internal temperature. It does this through mechanisms such as sweating and blood flow regulation, which protect the body from overheating and cold exposure, thereby preventing heat-related illnesses and hypothermia.
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01:07Introduction to Thermoregulation
Sensory Reception
The skin is equipped with a variety of sensory receptors that detect changes in the environment, such as temperature, pressure, and pain. This sensory function is essential for protecting the body by alerting it to potential dangers, allowing for quick reflexive responses to harmful stimuli.
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2:47Sensory Receptors
Related Practice
Textbook Question
Both newborn infants and aged individuals have very little subcutaneous tissue. How does this affect their sensitivity to cold environmental temperature?
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Textbook Question
Match the appropriate structure with the proper description and/or function.
1. Made of dense, irregular connective tissue
2. Produce sebum
3. Helps regulate body temperature by producing sweat
4. Cause fingerprints
5. Houses the hair root
6. Superficial keratinized stratified squamous epithelium
7. Deep pressure receptors
8. Vascular layer that houses skin appendages
a. Dermal papillae
b. Lamellar corpuscles
c. Dermis
d. Hair follicle
e. Epidermis
f. Eccrine sweat gland
g. Reticular layer
h. Sebaceous glands
39
views
Textbook Question
Match the appropriate structure with the proper description and/or function.
1. Made of dense, irregular connective tissue
2. Produce sebum
3. Helps regulate body temperature by producing sweat
4. Cause fingerprints
5. Houses the hair root
6. Superficial keratinized stratified squamous epithelium
7. Deep pressure receptors
8. Vascular layer that houses skin appendages
a. Dermal papillae
b. Lamellar corpuscles
c. Dermis
d. Hair follicle
e. Epidermis
f. Eccrine sweat gland
g. Reticular layer
h. Sebaceous glands
35
views
Textbook Question
Match the appropriate structure with the proper description and/or function.
1. Made of dense, irregular connective tissue
2. Produce sebum
3. Helps regulate body temperature by producing sweat
4. Cause fingerprints
5. Houses the hair root
6. Superficial keratinized stratified squamous epithelium
7. Deep pressure receptors
8. Vascular layer that houses skin appendages
a. Dermal papillae
b. Lamellar corpuscles
c. Dermis
d. Hair follicle
e. Epidermis
f. Eccrine sweat gland
g. Reticular layer
h. Sebaceous glands
49
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Textbook Question
More than one choice may apply.
Which layer of the heart wall is an endothelium?
a. Endocardium
b. Myocardium
c. Epicardium
d. Pericardium
567
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