The layer of stem cells that constantly divide to renew the epidermis is the
A) stratum corneum.
B) stratum basale.
C) papillary layer.
D) basal lamina.
E) stratum granulosum.
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Question 2) The epidermis of the skin is composed of what type of tissue?
A) keratinized stratified squamous epithelium
B) simple squamous epithelium
C) transitional epithelium
D) areolar connective tissue
E) nonkeratinized stratified squamous epithelium
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Question 3) Water loss from insensible perspiration
A) is unaffected by damage to the epidermis.
B) is too small to be measured reliably.
C) is approximately 0.5 liters a day.
D) always exceeds sensible perspiration.
E) depends on apocrine sweat glands.
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Question 4) ________ are cells in the epidermis that are part of the immune system.
A) Dendritic cells
B) Basal cells
C) Merkel cells
D) Squamous cells
E) Melanocytes
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Question 5) All of the following are true of epidermal ridges except that they
A) extend into the hypodermis.
B) increase surface area and friction on fingertips.
C) cause ridge patterns on the surface of the skin.
D) produce patterns that are determined partially genetically.
E) interconnect with the dermal papillae.
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Question 6) Characteristics of the epidermis include
A) multilayered.
B) flexible.
C) contains desmosomes.
D) serves as UV radiation protection.
E) All of the answers are correct.
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Question 7) The layer of the skin that provides a barrier against bacteria as well as chemical and mechanical injuries is the
A) dermis.
B) subcutaneous layer.
C) epidermis.
D) stratum basale.
E) sebaceous layer.
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Question 8) The layer of the epidermis that contains several layers of living cells connected by abundant desmosomes is the stratum
A) corneum.
B) lucidum.
C) basale.
D) granulosum.
E) spinosum.
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Question 9) Water loss due to evaporation of fluid that has penetrated through the skin is called ________ perspiration.
A) sensible
B) insensible
C) latent
D) active
E) inactive
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Question 10) The largest quantities of keratin are found in the epidermal layer called the stratum
A) corneum.
B) lucidum.
C) basale.
D) granulosum.
E) spinosum.
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