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Questions and Answers
Which layer of the skin is responsible for binding the skin to underlying tissues?
Which layer of the skin is responsible for binding the skin to underlying tissues?
What type of gland is responsible for producing sebum?
What type of gland is responsible for producing sebum?
Which of the following is NOT a function of the dermis?
Which of the following is NOT a function of the dermis?
Which type of gland is most abundant on the forehead, neck, and back?
Which type of gland is most abundant on the forehead, neck, and back?
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What is the primary function of melanin?
What is the primary function of melanin?
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What type of tissue makes up the epidermis?
What type of tissue makes up the epidermis?
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Which type of nerve ending is responsible for sensing pressure and vibration?
Which type of nerve ending is responsible for sensing pressure and vibration?
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What is the primary function of keratin in the integumentary system?
What is the primary function of keratin in the integumentary system?
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Which of the following structures is responsible for producing goose bumps?
Which of the following structures is responsible for producing goose bumps?
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Which gland type is responsible for producing a secretion that contributes to body odor?
Which gland type is responsible for producing a secretion that contributes to body odor?
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Which of the following structures is responsible for sensing pressure and vibration?
Which of the following structures is responsible for sensing pressure and vibration?
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Which layer of the skin contains major blood vessels that supply the skin?
Which layer of the skin contains major blood vessels that supply the skin?
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What is the name of the tube-like depression where a hair follicle develops?
What is the name of the tube-like depression where a hair follicle develops?
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What type of muscle is associated with hair follicles to create goose bumps?
What type of muscle is associated with hair follicles to create goose bumps?
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Which layer of the skin contains dense, irregular connective tissue?
Which layer of the skin contains dense, irregular connective tissue?
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Which secretion produced by sebaceous glands helps protect the skin from dehydration?
Which secretion produced by sebaceous glands helps protect the skin from dehydration?
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What is the primary role of adipose tissue in the hypodermis?
What is the primary role of adipose tissue in the hypodermis?
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Which type of gland is incorrectly named apocrine but functions in response to emotional stimuli?
Which type of gland is incorrectly named apocrine but functions in response to emotional stimuli?
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What pigment produced in the skin provides protection from harmful UV rays?
What pigment produced in the skin provides protection from harmful UV rays?
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What type of tissue makes up the epidermis of the skin?
What type of tissue makes up the epidermis of the skin?
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Which type of gland primarily responds to body temperature and is abundant on the forehead?
Which type of gland primarily responds to body temperature and is abundant on the forehead?
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Study Notes
Integumentary System Structures
- Epidermis: The outer layer of skin, made of stratified squamous epithelium; thin.
- Dermis: The thicker inner layer; composed of connective tissue, blood vessels, smooth muscle, and nerves.
- Hypodermis (Subcutaneous Layer): Lies beneath the dermis, comprised of areolar and adipose tissue. Binds skin to underlying tissue; insulates; contains major blood vessels.
- Hair Follicle: A tube-like depression where hair originates; typically penetrates the dermis and sometimes the subcutaneous layer; originates from epithelial stem cells at the base of a tube-like depression.
- Sebaceous Gland: Produces sebum (oil); holocrine glands; associated with hair follicles; waterproofs and softens hair/skin.
- Eccrine Gland: Merocrine glands; abundant on forehead, neck, back; respond to temperature; secrete onto skin surface.
- Apocrine Gland: Merocrine glands (though sometimes inaccurately classified as apocrine); active at puberty; respond to emotions, fear, pain or sexual arousal; located in armpits and groin; secretion contains proteins and fats that can produce body odor.
- Pacinian Corpuscle (Lamellated Corpuscle): Sensory receptors; have free nerve endings.
- Meissner's Corpuscle (Tactile Corpuscle): Sensory receptors; free nerve endings.
- Arrector Pili: Bundle of smooth muscle cells attached to each hair follicle. Contracts in response to cold, emotion, or other stimulus; causes goosebumps.
Skin Tissues
- The epidermis is composed of closely packed epithelial cells.
- The dermis consists of dense, irregular connective tissue that contains blood vessels, hair follicles, sweat glands, and other structures.
Skin Functions (of secretions)
- Sebum: Acts as a natural moisturizer, keeping skin soft and supple, and creating a protective barrier.
- Keratin: Structural protein, forming a waterproof barrier for skin.
- Melanin: Pigment produced by melanocytes; gives skin color and provides protection from UV rays.
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Description
Test your knowledge on the structures of the integumentary system. This quiz covers the epidermis, dermis, hypodermis, and associated glands such as sebaceous and eccrine glands. Perfect for students studying anatomy and biology.
