Rasmussen University · BSC 2346 Anatomy & Physiology
Module 03 Case Study
Latest 2026/2027 Update — Complete Solutions — 100% Correct
Comprehensive Study Guide — 85-Question Exam · 7 Sections
Instructions. This 85-question case study exam covers the full BSC 2346 Module 03 curriculum across 7 sections: (1)
Integumentary System Structure and Function; (2) Skin Integrity, Wound Healing, and Burns; (3) Bone Tissue and
Skeletal System Foundations; (4) Skeletal System Organization and Axial Skeleton; (5) Appendicular Skeleton and Joints;
(6) Muscle Tissue and Muscular System Fundamentals; and (7) Case Study Application and Clinical Correlation. Each
question is followed by the correct answer and a detailed rationale with anatomical and physiological reasoning,
structural/functional basis, and clinical correlation aligned with Rasmussen BSC 2346 Module 03 standards. Cognitive
levels are approximately 35% recall, 45% application, and 20% analysis, with 65% scenario/case-based items and 35%
direct recall of anatomical structures and physiological processes.
Section 1 — Integumentary System Structure and Function (Epidermis, Dermis, Hypodermis, &
Accessory Structures)
Questions 1–13 cover epidermal layers, dermis structure, hypodermis, accessory structures, and skin functions. Aligned with
Rasmussen BSC 2346 Module 03 Domain 1.
Q1: A 35-year-old patient presents with a superficial scrape from a fall. The wound penetrates only the
epidermis. Which epidermal layer, containing actively mitotic cells, would be the deepest layer affected?
A. Stratum corneum
B. Stratum basale (basal layer), the deepest epidermal layer containing mitotically active keratinocytes that
regenerate the skin [CORRECT]
C. Stratum lucidum
D. Stratum granulosum
Correct Answer: B. Stratum basale (basal layer), the deepest epidermal layer containing mitotically active
keratinocytes that regenerate the skin
Rationale: The stratum basale (basale) is the deepest epidermal layer, attached to the basement membrane, containing
mitotically active keratinocytes, melanocytes, and tactile cells. It continuously regenerates the overlying layers. The
stratum corneum is the outermost dead keratinized layer; stratum lucidum is only in thick skin (palms/soles); stratum
granulosum produces keratohyalin. Wounds limited to the epidermis heal without scarring.
,Q2: A patient has thickened skin on the palms and soles. Which epidermal layer is uniquely present in thick skin
and absent in thin skin?
A. Stratum spinosum
B. Stratum lucidum, a clear, translucent layer found only in thick skin (palms and soles) between the
stratum granulosum and stratum corneum [CORRECT]
C. Stratum basale
D. Stratum corneum
Correct Answer: B. Stratum lucidum, a clear, translucent layer found only in thick skin (palms and soles) between
the stratum granulosum and stratum corneum
Rationale: The stratum lucidum is a thin, clear layer found only in thick skin (palms, soles, fingertips), located between
the stratum granulosum and stratum corneum. It consists of densely packed dead keratinocytes. Thin skin lacks the
stratum lucidum. The other layers (basale, spinosum, granulosum, corneum) are present in both thick and thin skin.
Q3: A burn patient has damage extending into the dermis. Which structural features of the dermis are
responsible for skin strength and elasticity, respectively?
A. Melanin and keratin.
B. Collagen fibers (strength/tensile resistance) in the reticular layer and elastic fibers (elasticity/recoil)
distributed throughout the dermis [CORRECT]
C. Keratohyalin and lamellar granules.
D. Sebum and sweat.
Correct Answer: B. Collagen fibers (strength/tensile resistance) in the reticular layer and elastic fibers
(elasticity/recoil) distributed throughout the dermis
Rationale: Collagen fibers in the reticular dermis provide tensile strength and resistance to tearing; elastic fibers provide
elasticity and recoil. Melanin provides pigmentation, keratin provides waterproofing (epidermis). Sebum and sweat are
secretions, not structural. Damage to dermal collagen and elastin results in scarring and loss of elasticity.
Q4: The dermis is divided into two layers. The papillary layer is characterized by:
A. Dense irregular connective tissue with thick collagen bundles.
B. Areolar connective tissue with dermal papillae that form fingerprints and increase surface area for
exchange of gases, nutrients, and wastes with the epidermis [CORRECT]
C. Adipose tissue only.
D. Stratified squamous epithelium.
Correct Answer: B. Areolar connective tissue with dermal papillae that form fingerprints and increase surface
area for exchange of gases, nutrients, and wastes with the epidermis
Rationale: The papillary layer is the superficial dermis composed of areolar connective tissue with dermal papillae
(finger-like projections) that interdigitate with the epidermis, forming fingerprints (friction ridges) and increasing surface
area for nutrient/gas exchange. The reticular layer is deeper, dense irregular connective tissue. Adipose tissue is in the
hypodermis; stratified squamous epithelium is the epidermis.
, Q5: A patient is concerned about loss of subcutaneous fat with aging. The hypodermis (subcutaneous layer) is
important because it:
A. Is part of the epidermis and produces keratin.
B. Provides insulation, energy storage, shock absorption, and anchors skin to underlying structures; consists
primarily of adipose and areolar connective tissue [CORRECT]
C. Contains melanocytes that produce pigment.
D. Is the deepest layer of the dermis.
Correct Answer: B. Provides insulation, energy storage, shock absorption, and anchors skin to underlying
structures; consists primarily of adipose and areolar connective tissue
Rationale: The hypodermis (subcutaneous layer) is deep to the dermis, composed primarily of adipose and areolar
connective tissue, providing insulation, energy storage, shock absorption, and anchoring skin to underlying structures. It is
NOT part of the skin (integumentary proper). Loss of subcutaneous fat with aging increases wrinkling, cold intolerance,
and pressure injury risk.
Q6: A patient presents with acne involving blocked sebaceous glands. Sebaceous glands:
A. Produce sweat for thermoregulation.
B. Produce sebum (oily substance) that lubricates hair and skin, inhibits bacterial growth, and prevents
drying; usually associated with hair follicles [CORRECT]
C. Produce melanin.
D. Are found only in the palms and soles.
Correct Answer: B. Produce sebum (oily substance) that lubricates hair and skin, inhibits bacterial growth, and
prevents drying; usually associated with hair follicles
Rationale: Sebaceous glands produce sebum, an oily substance that lubricates hair and skin, prevents drying, and has
mild antibacterial properties. They are associated with hair follicles (except on lips, glans penis, labia minora, and tarsal
glands). Sebaceous gland activity increases at puberty, contributing to acne. Sweat glands (eccrine/merocrine and
apocrine) are different structures.
Q7: Which type of sweat gland is widely distributed across the body and is critical for thermoregulation through
evaporative cooling?
A. Apocrine sweat gland.
B. Eccrine (merocrine) sweat glands, distributed across most of the body surface, especially
palms/soles/forehead; secrete watery sweat directly onto skin surface for thermoregulation [CORRECT]
C. Sebaceous gland.
D. Ceruminous gland.
Correct Answer: B. Eccrine (merocrine) sweat glands, distributed across most of the body surface, especially
palms/soles/forehead; secrete watery sweat directly onto skin surface for thermoregulation
Rationale: Eccrine (merocrine) sweat glands are widely distributed, especially on palms, soles, and forehead; they secrete
watery sweat directly onto the skin surface via ducts for evaporative cooling. Apocrine glands are in axillary and
anogenital regions, become active at puberty, and release via hair follicles. Sebaceous glands produce sebum; ceruminous
glands produce earwax.
Module 03 Case Study
Latest 2026/2027 Update — Complete Solutions — 100% Correct
Comprehensive Study Guide — 85-Question Exam · 7 Sections
Instructions. This 85-question case study exam covers the full BSC 2346 Module 03 curriculum across 7 sections: (1)
Integumentary System Structure and Function; (2) Skin Integrity, Wound Healing, and Burns; (3) Bone Tissue and
Skeletal System Foundations; (4) Skeletal System Organization and Axial Skeleton; (5) Appendicular Skeleton and Joints;
(6) Muscle Tissue and Muscular System Fundamentals; and (7) Case Study Application and Clinical Correlation. Each
question is followed by the correct answer and a detailed rationale with anatomical and physiological reasoning,
structural/functional basis, and clinical correlation aligned with Rasmussen BSC 2346 Module 03 standards. Cognitive
levels are approximately 35% recall, 45% application, and 20% analysis, with 65% scenario/case-based items and 35%
direct recall of anatomical structures and physiological processes.
Section 1 — Integumentary System Structure and Function (Epidermis, Dermis, Hypodermis, &
Accessory Structures)
Questions 1–13 cover epidermal layers, dermis structure, hypodermis, accessory structures, and skin functions. Aligned with
Rasmussen BSC 2346 Module 03 Domain 1.
Q1: A 35-year-old patient presents with a superficial scrape from a fall. The wound penetrates only the
epidermis. Which epidermal layer, containing actively mitotic cells, would be the deepest layer affected?
A. Stratum corneum
B. Stratum basale (basal layer), the deepest epidermal layer containing mitotically active keratinocytes that
regenerate the skin [CORRECT]
C. Stratum lucidum
D. Stratum granulosum
Correct Answer: B. Stratum basale (basal layer), the deepest epidermal layer containing mitotically active
keratinocytes that regenerate the skin
Rationale: The stratum basale (basale) is the deepest epidermal layer, attached to the basement membrane, containing
mitotically active keratinocytes, melanocytes, and tactile cells. It continuously regenerates the overlying layers. The
stratum corneum is the outermost dead keratinized layer; stratum lucidum is only in thick skin (palms/soles); stratum
granulosum produces keratohyalin. Wounds limited to the epidermis heal without scarring.
,Q2: A patient has thickened skin on the palms and soles. Which epidermal layer is uniquely present in thick skin
and absent in thin skin?
A. Stratum spinosum
B. Stratum lucidum, a clear, translucent layer found only in thick skin (palms and soles) between the
stratum granulosum and stratum corneum [CORRECT]
C. Stratum basale
D. Stratum corneum
Correct Answer: B. Stratum lucidum, a clear, translucent layer found only in thick skin (palms and soles) between
the stratum granulosum and stratum corneum
Rationale: The stratum lucidum is a thin, clear layer found only in thick skin (palms, soles, fingertips), located between
the stratum granulosum and stratum corneum. It consists of densely packed dead keratinocytes. Thin skin lacks the
stratum lucidum. The other layers (basale, spinosum, granulosum, corneum) are present in both thick and thin skin.
Q3: A burn patient has damage extending into the dermis. Which structural features of the dermis are
responsible for skin strength and elasticity, respectively?
A. Melanin and keratin.
B. Collagen fibers (strength/tensile resistance) in the reticular layer and elastic fibers (elasticity/recoil)
distributed throughout the dermis [CORRECT]
C. Keratohyalin and lamellar granules.
D. Sebum and sweat.
Correct Answer: B. Collagen fibers (strength/tensile resistance) in the reticular layer and elastic fibers
(elasticity/recoil) distributed throughout the dermis
Rationale: Collagen fibers in the reticular dermis provide tensile strength and resistance to tearing; elastic fibers provide
elasticity and recoil. Melanin provides pigmentation, keratin provides waterproofing (epidermis). Sebum and sweat are
secretions, not structural. Damage to dermal collagen and elastin results in scarring and loss of elasticity.
Q4: The dermis is divided into two layers. The papillary layer is characterized by:
A. Dense irregular connective tissue with thick collagen bundles.
B. Areolar connective tissue with dermal papillae that form fingerprints and increase surface area for
exchange of gases, nutrients, and wastes with the epidermis [CORRECT]
C. Adipose tissue only.
D. Stratified squamous epithelium.
Correct Answer: B. Areolar connective tissue with dermal papillae that form fingerprints and increase surface
area for exchange of gases, nutrients, and wastes with the epidermis
Rationale: The papillary layer is the superficial dermis composed of areolar connective tissue with dermal papillae
(finger-like projections) that interdigitate with the epidermis, forming fingerprints (friction ridges) and increasing surface
area for nutrient/gas exchange. The reticular layer is deeper, dense irregular connective tissue. Adipose tissue is in the
hypodermis; stratified squamous epithelium is the epidermis.
, Q5: A patient is concerned about loss of subcutaneous fat with aging. The hypodermis (subcutaneous layer) is
important because it:
A. Is part of the epidermis and produces keratin.
B. Provides insulation, energy storage, shock absorption, and anchors skin to underlying structures; consists
primarily of adipose and areolar connective tissue [CORRECT]
C. Contains melanocytes that produce pigment.
D. Is the deepest layer of the dermis.
Correct Answer: B. Provides insulation, energy storage, shock absorption, and anchors skin to underlying
structures; consists primarily of adipose and areolar connective tissue
Rationale: The hypodermis (subcutaneous layer) is deep to the dermis, composed primarily of adipose and areolar
connective tissue, providing insulation, energy storage, shock absorption, and anchoring skin to underlying structures. It is
NOT part of the skin (integumentary proper). Loss of subcutaneous fat with aging increases wrinkling, cold intolerance,
and pressure injury risk.
Q6: A patient presents with acne involving blocked sebaceous glands. Sebaceous glands:
A. Produce sweat for thermoregulation.
B. Produce sebum (oily substance) that lubricates hair and skin, inhibits bacterial growth, and prevents
drying; usually associated with hair follicles [CORRECT]
C. Produce melanin.
D. Are found only in the palms and soles.
Correct Answer: B. Produce sebum (oily substance) that lubricates hair and skin, inhibits bacterial growth, and
prevents drying; usually associated with hair follicles
Rationale: Sebaceous glands produce sebum, an oily substance that lubricates hair and skin, prevents drying, and has
mild antibacterial properties. They are associated with hair follicles (except on lips, glans penis, labia minora, and tarsal
glands). Sebaceous gland activity increases at puberty, contributing to acne. Sweat glands (eccrine/merocrine and
apocrine) are different structures.
Q7: Which type of sweat gland is widely distributed across the body and is critical for thermoregulation through
evaporative cooling?
A. Apocrine sweat gland.
B. Eccrine (merocrine) sweat glands, distributed across most of the body surface, especially
palms/soles/forehead; secrete watery sweat directly onto skin surface for thermoregulation [CORRECT]
C. Sebaceous gland.
D. Ceruminous gland.
Correct Answer: B. Eccrine (merocrine) sweat glands, distributed across most of the body surface, especially
palms/soles/forehead; secrete watery sweat directly onto skin surface for thermoregulation
Rationale: Eccrine (merocrine) sweat glands are widely distributed, especially on palms, soles, and forehead; they secrete
watery sweat directly onto the skin surface via ducts for evaporative cooling. Apocrine glands are in axillary and
anogenital regions, become active at puberty, and release via hair follicles. Sebaceous glands produce sebum; ceruminous
glands produce earwax.
