ASU BIO 201 EXAM 2 QUESTIONS AND CORRECT ANSWERS WITH RATIONALES
Exam Coverage
• Integumentary system organization, including epidermis, dermis, hypodermis, and accessory
structures.
• Functions of skin, including protection, sensation, thermoregulation, excretion, immune
defense, and metabolic roles.
• Epidermal layers and their distinguishing features, including basale, spinosum, granulosum,
lucidum, and corneum.
• Major epidermal cell types, including keratinocytes, melanocytes, tactile cells, dendritic cells,
and stem cells.
• Keratin production, epidermal water barrier formation, melanin production, and ultraviolet
protection.
• Dermal organization, including papillary and reticular layers, connective tissue, blood supply,
nerves, and sensory structures.
• Hair, nails, sebaceous glands, sweat glands, and other accessory structures and their
physiological functions.
• Burns, wound healing, skin pigmentation, and clinical application of integumentary anatomy.
• Skeletal tissue organization, bone structure, bone cells, bone matrix, and processes of bone
growth and remodeling.
• Major skeletal anatomy, fracture concepts, joint structures, and integrated relationships
between integumentary and skeletal systems.
,1. For a patient, specimen, system, or case showing the finding described, Which epidermal
layer is particularly important for forming the protein-lipid barrier that limits water loss Which
option is most accurate? The question focuses on stratum granulosum and asks you to apply
the concept rather than recall an isolated term.
A. Stratum granulosum
B. Stratum basale
C. Papillary dermis
D. Hypodermis
Answer: A
Rationale: Cells of the stratum granulosum contain keratohyalin granules and release lipids
that contribute to the epidermal water barrier.
2. During a comprehensive assessment, Why do nutrients reach cells in the epidermis primarily
by diffusion rather than through epidermal blood vessels Which interpretation is correct? The
question focuses on epidermal avascularity and asks you to apply the concept rather than recall
an isolated term.
A. The epidermis contains only arteries.
B. The epidermis is avascular and lies over the vascular dermis.
C. The epidermis is made of bone.
D. The epidermis receives direct blood flow from the stratum corneum.
Answer: B
Rationale: The epidermis contains no blood vessels. Nutrients diffuse from capillary networks
in the underlying dermis.
,3. During a comprehensive assessment, Which epidermal layer consists primarily of flattened,
dead, keratinized cells at the skin surface Which option most directly addresses the question?
The question focuses on stratum corneum and asks you to apply the concept rather than recall
an isolated term.
A. Stratum basale
B. Stratum spinosum
C. Stratum corneum
D. Papillary layer
Answer: C
Rationale: The stratum corneum is the outermost epidermal layer and consists mainly of dead,
flattened, keratin-filled cells that provide protection.
4. During a comprehensive assessment, Which layer of the skin contains blood vessels, nerves,
glands, and connective tissue that support the epidermis Which response is supported by the
underlying principle? The question focuses on dermis and asks you to apply the concept rather
than recall an isolated term.
A. Stratum corneum
B. Stratum lucidum
C. Hypodermis only
D. Dermis
Answer: D
Rationale: The dermis is vascular connective tissue containing nerves, sensory receptors,
glands, hair follicles, and supporting structures.
, 5. When preparing for the examination, What is the principal role of epidermal dendritic or
Langerhans cells Which answer best explains the finding? The question focuses on dendritic
cells and asks you to apply the concept rather than recall an isolated term.
A. They participate in immune surveillance and antigen presentation.
B. They produce bone matrix.
C. They secrete sebum.
D. They generate red blood cells.
Answer: A
Rationale: Langerhans cells are immune cells in the epidermis that participate in recognizing
and presenting antigens.
6. When preparing for the examination, Which tissue type forms the epidermis of normal skin
Which option most directly addresses the question? The question focuses on epidermis and
asks you to apply the concept rather than recall an isolated term.
A. Simple cuboidal epithelium
B. Keratinized stratified squamous epithelium
C. Cardiac muscle
D. Loose adipose epithelium
Answer: B
Rationale: The epidermis is composed of keratinized stratified squamous epithelium, providing
a durable protective surface.
7. During a comprehensive assessment, Which tissue type forms the epidermis of normal skin
What is the best answer? The question focuses on epidermis and asks you to apply the concept
Exam Coverage
• Integumentary system organization, including epidermis, dermis, hypodermis, and accessory
structures.
• Functions of skin, including protection, sensation, thermoregulation, excretion, immune
defense, and metabolic roles.
• Epidermal layers and their distinguishing features, including basale, spinosum, granulosum,
lucidum, and corneum.
• Major epidermal cell types, including keratinocytes, melanocytes, tactile cells, dendritic cells,
and stem cells.
• Keratin production, epidermal water barrier formation, melanin production, and ultraviolet
protection.
• Dermal organization, including papillary and reticular layers, connective tissue, blood supply,
nerves, and sensory structures.
• Hair, nails, sebaceous glands, sweat glands, and other accessory structures and their
physiological functions.
• Burns, wound healing, skin pigmentation, and clinical application of integumentary anatomy.
• Skeletal tissue organization, bone structure, bone cells, bone matrix, and processes of bone
growth and remodeling.
• Major skeletal anatomy, fracture concepts, joint structures, and integrated relationships
between integumentary and skeletal systems.
,1. For a patient, specimen, system, or case showing the finding described, Which epidermal
layer is particularly important for forming the protein-lipid barrier that limits water loss Which
option is most accurate? The question focuses on stratum granulosum and asks you to apply
the concept rather than recall an isolated term.
A. Stratum granulosum
B. Stratum basale
C. Papillary dermis
D. Hypodermis
Answer: A
Rationale: Cells of the stratum granulosum contain keratohyalin granules and release lipids
that contribute to the epidermal water barrier.
2. During a comprehensive assessment, Why do nutrients reach cells in the epidermis primarily
by diffusion rather than through epidermal blood vessels Which interpretation is correct? The
question focuses on epidermal avascularity and asks you to apply the concept rather than recall
an isolated term.
A. The epidermis contains only arteries.
B. The epidermis is avascular and lies over the vascular dermis.
C. The epidermis is made of bone.
D. The epidermis receives direct blood flow from the stratum corneum.
Answer: B
Rationale: The epidermis contains no blood vessels. Nutrients diffuse from capillary networks
in the underlying dermis.
,3. During a comprehensive assessment, Which epidermal layer consists primarily of flattened,
dead, keratinized cells at the skin surface Which option most directly addresses the question?
The question focuses on stratum corneum and asks you to apply the concept rather than recall
an isolated term.
A. Stratum basale
B. Stratum spinosum
C. Stratum corneum
D. Papillary layer
Answer: C
Rationale: The stratum corneum is the outermost epidermal layer and consists mainly of dead,
flattened, keratin-filled cells that provide protection.
4. During a comprehensive assessment, Which layer of the skin contains blood vessels, nerves,
glands, and connective tissue that support the epidermis Which response is supported by the
underlying principle? The question focuses on dermis and asks you to apply the concept rather
than recall an isolated term.
A. Stratum corneum
B. Stratum lucidum
C. Hypodermis only
D. Dermis
Answer: D
Rationale: The dermis is vascular connective tissue containing nerves, sensory receptors,
glands, hair follicles, and supporting structures.
, 5. When preparing for the examination, What is the principal role of epidermal dendritic or
Langerhans cells Which answer best explains the finding? The question focuses on dendritic
cells and asks you to apply the concept rather than recall an isolated term.
A. They participate in immune surveillance and antigen presentation.
B. They produce bone matrix.
C. They secrete sebum.
D. They generate red blood cells.
Answer: A
Rationale: Langerhans cells are immune cells in the epidermis that participate in recognizing
and presenting antigens.
6. When preparing for the examination, Which tissue type forms the epidermis of normal skin
Which option most directly addresses the question? The question focuses on epidermis and
asks you to apply the concept rather than recall an isolated term.
A. Simple cuboidal epithelium
B. Keratinized stratified squamous epithelium
C. Cardiac muscle
D. Loose adipose epithelium
Answer: B
Rationale: The epidermis is composed of keratinized stratified squamous epithelium, providing
a durable protective surface.
7. During a comprehensive assessment, Which tissue type forms the epidermis of normal skin
What is the best answer? The question focuses on epidermis and asks you to apply the concept
