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Questions and Answers
What is one of the primary functions of the integumentary system?
What is one of the primary functions of the integumentary system?
- To filter waste and excess fluids
- To circulate blood throughout the body
- To digest and absorb nutrients
- To regulate body temperature (correct)
Which layer of the skin is responsible for preventing water loss?
Which layer of the skin is responsible for preventing water loss?
- Dermis
- Subcutaneous tissue
- Epidermis (correct)
- Hypodermis
What is the function of the hair?
What is the function of the hair?
- To protect the scalp from sun and cold (correct)
- To aid in the senses of smell and taste
- To regulate body temperature
- To produce vitamin D
What is the function of the dermis?
What is the function of the dermis?
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What is the function of the hypodermis?
What is the function of the hypodermis?
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What is the function of the nails?
What is the function of the nails?
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Study Notes
Functions of the Integumentary System
- Protects the body from external damage (injuries, infections, and dehydration)
- Regulates body temperature
- Aids in the senses of touch and feel
- Helps to regulate fluid balance
- Produces vitamin D upon sunlight exposure
Components of the Integumentary System
- Skin (epidermis, dermis, hypodermis)
- Hair
- Nails
- Glands (sweat, sebaceous, ceruminous)
- Accessory organs (arrector pili, sebaceous glands, ceruminous glands)
Layers of the Skin
- Epidermis:
- Outermost layer
- Composed of stratified squamous epithelium
- No blood vessels; relies on diffusion for oxygen and nutrients
- Dermis:
- Middle layer
- Composed of connective tissue
- Contains blood vessels, nerve endings, and hair follicles
- Hypodermis:
- Deepest layer
- Composed of loose connective tissue
- Attaches skin to underlying tissues
Functions of Skin Layers
- Epidermis:
- Prevents water loss
- Regulates body temperature
- Protects against UV radiation
- Dermis:
- Provides nutrients and oxygen to epidermis
- Supports hair growth
- Regulates body temperature
- Hypodermis:
- Attaches skin to underlying tissues
- Provides cushioning and support
Hair and Nails
- Hair:
- Protects scalp from sun and cold
- Regulates body temperature
- Provides sensory input
- Nails:
- Protects sensitive tips of fingers and toes
- Aids in sensation and manipulation of objects
Functions of the Integumentary System
- Protects the body from external damage, including injuries, infections, and dehydration
- Regulates body temperature
- Aids in the senses of touch and feel
- Helps to regulate fluid balance
- Produces vitamin D upon sunlight exposure
Components of the Integumentary System
- Skin (epidermis, dermis, hypodermis)
- Hair
- Nails
- Glands (sweat, sebaceous, ceruminous)
- Accessory organs (arrector pili, sebaceous glands, ceruminous glands)
Layers of the Skin
Epidermis
- Outermost layer of skin
- Composed of stratified squamous epithelium
- No blood vessels; relies on diffusion for oxygen and nutrients
Dermis
- Middle layer of skin
- Composed of connective tissue
- Contains blood vessels, nerve endings, and hair follicles
Hypodermis
- Deepest layer of skin
- Composed of loose connective tissue
- Attaches skin to underlying tissues
Functions of Skin Layers
Epidermis
- Prevents water loss
- Regulates body temperature
- Protects against UV radiation
Dermis
- Provides nutrients and oxygen to epidermis
- Supports hair growth
- Regulates body temperature
Hypodermis
- Attaches skin to underlying tissues
- Provides cushioning and support
Hair and Nails
Hair
- Protects scalp from sun and cold
- Regulates body temperature
- Provides sensory input
Nails
- Protects sensitive tips of fingers and toes
- Aids in sensation and manipulation of objects
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