A&P 1 101 Module 7 Exam || Integumentary System || Portage Learning
A&P; 1 101 Module 7 Exam
Integumentary System — Portage Learning
45-Question Comprehensive Module Examination
Aligned with Portage Learning Anatomy & Physiology 1 Module 7 Curriculum
Total Questions: 45 | Cognitive Levels: 30% Recall, 50% Application, 20% Analysis
Question Style: 60% Scenario/Essay-Based | 25% Direct Recall | 15% Identification/Matching
Section Topic Question Range
Section 1 Functions and Layers of the Skin (Epidermis, Dermis, Hypodermis) Q1 - Q12
Section 2 Epidermal Cells and Layers (Stratum Basale, Spinosum, Granulosum, Lucidum, Corneum)
Q13 - Q20
Section 3 Accessory Structures (Hair, Nails, Glands) Q21 - Q28
Section 4 Skin Color and Pigmentation (Melanin, Carotene, Hemoglobin, Cyanosis, Jaundice)
Q29 - Q34
Section 5 Wound Healing and Burns Q35 - Q40
Section 6 Clinical Applications and Integrated Scenarios Q41 - Q45
Section 1: Functions and Layers of the Skin (Epidermis, Dermis, Hypodermis)
(Q1-Q12)
Q1: A patient with severe liver disease has impaired conversion of vitamin D precursor in the skin. Which
primary function of the integumentary system is most directly affected?
A. Protection against UV radiation
B. Vitamin D synthesis (UV-driven conversion of a cholesterol precursor to cholecalciferol, essential for
calcium absorption) [CORRECT]
C. Thermoregulation through sweat production
D. Excretion of urea and salts
Correct Answer: B
Rationale: UV light converts 7-dehydrocholesterol in the epidermis into cholecalciferol (vitamin D3), which is then
activated by the liver and kidneys for calcium absorption. Although the patient has liver disease (impairing activation),
the question asks which skin function is affected—it remains vitamin D synthesis, the skin's role in the pathway.
Aligned with Portage Learning A&P 1 Module 7 Curriculum Page 1
, A&P 1 101 Module 7 Exam || Integumentary System || Portage Learning
Q2: On a hot summer day, an athlete's skin becomes flushed and they begin sweating profusely. Which
integumentary function is primarily responsible for heat dissipation?
A. Vitamin D synthesis
B. Protection from mechanical injury
C. Thermoregulation via sweat gland secretion and dermal vasodilation [CORRECT]
D. Immune defense by Langerhans cells
Correct Answer: C
Rationale: Thermoregulation is achieved through eccrine sweat glands producing watery sweat (evaporative cooling)
and dermal blood vessels dilating to release heat. Langerhans cells provide immune defense; vitamin D synthesis and
protection are not directly involved in cooling.
Q3: Which statement correctly identifies the layer of skin that is avascular and relies on diffusion from
underlying tissue for nutrients?
A. The dermis, because it contains no blood vessels
B. The epidermis, which is avascular and receives nutrients by diffusion from the dermal papillae
[CORRECT]
C. The hypodermis, which lacks capillaries
D. All skin layers are equally vascular
Correct Answer: B
Rationale: The epidermis is avascular and depends on diffusion of oxygen and nutrients from the highly vascular
dermis (dermal papillae). The dermis contains abundant blood vessels; the hypodermis is also vascularized.
Avascularity of the epidermis explains why superficial scrapes do not bleed.
Q4: The hypodermis (subcutaneous layer) is correctly described as:
A. The outermost layer of the skin, composed of dead keratinized cells
B. A layer deep to the dermis, composed primarily of adipose and loose connective tissue, NOT
technically part of the skin [CORRECT]
C. A vascular layer within the epidermis that produces melanin
D. The layer where desmosomes connect keratinocytes
Correct Answer: B
Rationale: The hypodermis lies deep to the dermis, is composed of adipose and loose connective tissue, and is not
technically part of the skin. It provides insulation, energy storage, shock absorption, and anchors skin to underlying
structures. The epidermis is the outermost layer; the dermis is the middle vascular layer.
Q5: Which layer of skin contains dermal papillae that form fingerprints?
A. Stratum basale of the epidermis
B. Papillary layer of the dermis [CORRECT]
C. Reticular layer of the dermis
D. Hypodermis
Correct Answer: B
Rationale: The papillary layer is the superficial layer of the dermis, made of loose connective tissue with dermal
papillae that project into the epidermis. These papillae form friction ridges (fingerprints) that enhance grip. The reticular
layer is deeper; the epidermis and hypodermis do not form fingerprints.
Aligned with Portage Learning A&P 1 Module 7 Curriculum Page 2
A&P; 1 101 Module 7 Exam
Integumentary System — Portage Learning
45-Question Comprehensive Module Examination
Aligned with Portage Learning Anatomy & Physiology 1 Module 7 Curriculum
Total Questions: 45 | Cognitive Levels: 30% Recall, 50% Application, 20% Analysis
Question Style: 60% Scenario/Essay-Based | 25% Direct Recall | 15% Identification/Matching
Section Topic Question Range
Section 1 Functions and Layers of the Skin (Epidermis, Dermis, Hypodermis) Q1 - Q12
Section 2 Epidermal Cells and Layers (Stratum Basale, Spinosum, Granulosum, Lucidum, Corneum)
Q13 - Q20
Section 3 Accessory Structures (Hair, Nails, Glands) Q21 - Q28
Section 4 Skin Color and Pigmentation (Melanin, Carotene, Hemoglobin, Cyanosis, Jaundice)
Q29 - Q34
Section 5 Wound Healing and Burns Q35 - Q40
Section 6 Clinical Applications and Integrated Scenarios Q41 - Q45
Section 1: Functions and Layers of the Skin (Epidermis, Dermis, Hypodermis)
(Q1-Q12)
Q1: A patient with severe liver disease has impaired conversion of vitamin D precursor in the skin. Which
primary function of the integumentary system is most directly affected?
A. Protection against UV radiation
B. Vitamin D synthesis (UV-driven conversion of a cholesterol precursor to cholecalciferol, essential for
calcium absorption) [CORRECT]
C. Thermoregulation through sweat production
D. Excretion of urea and salts
Correct Answer: B
Rationale: UV light converts 7-dehydrocholesterol in the epidermis into cholecalciferol (vitamin D3), which is then
activated by the liver and kidneys for calcium absorption. Although the patient has liver disease (impairing activation),
the question asks which skin function is affected—it remains vitamin D synthesis, the skin's role in the pathway.
Aligned with Portage Learning A&P 1 Module 7 Curriculum Page 1
, A&P 1 101 Module 7 Exam || Integumentary System || Portage Learning
Q2: On a hot summer day, an athlete's skin becomes flushed and they begin sweating profusely. Which
integumentary function is primarily responsible for heat dissipation?
A. Vitamin D synthesis
B. Protection from mechanical injury
C. Thermoregulation via sweat gland secretion and dermal vasodilation [CORRECT]
D. Immune defense by Langerhans cells
Correct Answer: C
Rationale: Thermoregulation is achieved through eccrine sweat glands producing watery sweat (evaporative cooling)
and dermal blood vessels dilating to release heat. Langerhans cells provide immune defense; vitamin D synthesis and
protection are not directly involved in cooling.
Q3: Which statement correctly identifies the layer of skin that is avascular and relies on diffusion from
underlying tissue for nutrients?
A. The dermis, because it contains no blood vessels
B. The epidermis, which is avascular and receives nutrients by diffusion from the dermal papillae
[CORRECT]
C. The hypodermis, which lacks capillaries
D. All skin layers are equally vascular
Correct Answer: B
Rationale: The epidermis is avascular and depends on diffusion of oxygen and nutrients from the highly vascular
dermis (dermal papillae). The dermis contains abundant blood vessels; the hypodermis is also vascularized.
Avascularity of the epidermis explains why superficial scrapes do not bleed.
Q4: The hypodermis (subcutaneous layer) is correctly described as:
A. The outermost layer of the skin, composed of dead keratinized cells
B. A layer deep to the dermis, composed primarily of adipose and loose connective tissue, NOT
technically part of the skin [CORRECT]
C. A vascular layer within the epidermis that produces melanin
D. The layer where desmosomes connect keratinocytes
Correct Answer: B
Rationale: The hypodermis lies deep to the dermis, is composed of adipose and loose connective tissue, and is not
technically part of the skin. It provides insulation, energy storage, shock absorption, and anchors skin to underlying
structures. The epidermis is the outermost layer; the dermis is the middle vascular layer.
Q5: Which layer of skin contains dermal papillae that form fingerprints?
A. Stratum basale of the epidermis
B. Papillary layer of the dermis [CORRECT]
C. Reticular layer of the dermis
D. Hypodermis
Correct Answer: B
Rationale: The papillary layer is the superficial layer of the dermis, made of loose connective tissue with dermal
papillae that project into the epidermis. These papillae form friction ridges (fingerprints) that enhance grip. The reticular
layer is deeper; the epidermis and hypodermis do not form fingerprints.
Aligned with Portage Learning A&P 1 Module 7 Curriculum Page 2
