A&P Ch.5: The Integumentary System
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15 questions
Medicine & Health Sciences > Anatomy & Physiology
by Sean Valentine
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Fill in the Blank (15)
Question 1
The outermost layer of the skin is called the epidermis.
Missing Word
epidermis
The epidermis is a keratinized stratified squamous epithelium that provides the body's first line of defense.
Category: Ch5
Question 2
The pigment responsible for skin color is melanin.
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melanin
Melanin is produced by melanocytes in the stratum basale and protects against UV radiation damage.
Category: Ch5
Question 3
The deepest layer of the epidermis is the stratum basale.
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basale
The stratum basale contains stem cells that continuously divide, pushing older cells toward the surface.
Category: Ch5
Question 4
The protein that makes the skin tough and waterproof is keratin.
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keratin
Keratinocytes produce keratin as they migrate toward the skin surface, becoming tougher and more protective.
Category: Ch5
Question 5
Glands that produce an oily secretion to lubricate the skin are called sebaceous glands.
Missing Word
sebaceous
Sebaceous glands secrete sebum, which keeps skin and hair from drying out and has mild antibacterial properties.
Category: Ch5
Question 6
The layer of skin containing blood vessels, nerves, and hair follicles is the dermis.
Missing Word
dermis
The dermis is the thicker, deeper layer of skin made primarily of connective tissue with collagen and elastic fibers.
Category: Ch5
Question 7
The muscle attached to hair follicles that causes goosebumps is the arrector pili.
Missing Words
arrector, pili
Contraction of the arrector pili pulls the hair upright, creating the appearance of goosebumps.
Category: Ch5
Question 8
Burns that damage only the epidermis are classified as first-degree burns.
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first
First-degree burns cause redness and pain but heal quickly without scarring. Sunburn is a common example.
Category: Ch5
Question 9
The subcutaneous layer beneath the dermis is also called the hypodermis.
Missing Word
hypodermis
The hypodermis is composed mainly of adipose tissue that insulates the body and anchors the skin to deeper structures.
Category: Ch5
Question 10
UV radiation triggers the synthesis of vitamin D in the skin.
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vitamin D
A cholesterol precursor in the skin is converted to vitamin D3 by UV light and then further processed by the liver and kidneys.
Category: Ch5
Question 11
Sweat glands distributed across most of the body surface are called eccrine glands.
Missing Word
eccrine
Eccrine glands produce a watery sweat that cools the body through evaporation and are most abundant on the palms and soles.
Category: Ch5
Question 12
The outermost layer of the epidermis made of dead cells is the stratum corneum.
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corneum
The stratum corneum consists of 20-30 layers of dead, flattened keratinocytes that are continuously shed.
Category: Ch5
Question 13
The fingerprint patterns on the skin are created by dermal papillae in the papillary layer.
Missing Word
papillae
Dermal papillae increase the surface area between the dermis and epidermis, creating unique ridge patterns.
Category: Ch5
Question 14
A bluish skin discoloration caused by low blood oxygen is called cyanosis.
Missing Word
cyanosis
Cyanosis indicates that hemoglobin in the blood is poorly oxygenated, giving the skin a blue-purple tint.
Category: Ch5
Question 15
The skin is considered the largest organ of the human body.
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largest
The skin covers approximately 1.5 to 2 square meters and accounts for about 15% of total body weight in adults.
Category: Ch5
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