GTCC BIO 168 Test 2 — Integumentary, Skeletal, and Muscular
Systems Practice Exam Bank (Verified Update!!!)
Format: Question → Answer → Detailed Rationale | Complete
Verified Questions | Graded A+
Coverage: Integumentary System, Skeletal System, and
Muscular System
SECTION 1: INTEGUMENTARY SYSTEM (Questions)
Skin Structure & Layers
1. The three main layers of the skin, from superficial to deep,
are:
A) Dermis, epidermis, hypodermis
B) Epidermis, dermis, hypodermis
C) Hypodermis, dermis, epidermis
D) Epidermis, hypodermis, dermis
Correct Answer: B
Rationale: The skin consists of two main layers — the epidermis
,(outermost) and dermis — plus the hypodermis (subcutaneous
layer) beneath the dermis.
2. Which layer of the skin is composed of stratified squamous
epithelium?
A) Dermis
B) Hypodermis
C) Epidermis
D) Reticular layer
Correct Answer: C
Rationale: The epidermis is composed of stratified squamous
epithelium. The dermis is made of connective tissue, and the
hypodermis is composed primarily of adipose tissue.
3. The hypodermis is primarily composed of which type of
tissue?
A) Epithelial tissue
B) Dense irregular connective tissue
C) Adipose connective tissue
D) Reticular connective tissue
Correct Answer: C
Rationale: The hypodermis (subcutaneous layer) is primarily
composed of adipose (fat) connective tissue. It anchors the skin
to underlying structures and provides insulation, shock
absorption, and energy storage.
,4. The epidermis is avascular. What does this mean?
A) It has many blood vessels
B) It has no blood vessels
C) It has lymph vessels only
D) It receives blood from the hypodermis
Correct Answer: B
Rationale: Avascular means the epidermis has no blood vessels.
It receives nutrients by diffusion from the dermis and from the
underlying connective tissue.
5. Which of the following is NOT a function of the
integumentary system?
A) Protection against mechanical trauma
B) Thermoregulation
C) Vitamin D synthesis
D) Production of red blood cells
Correct Answer: D
Rationale: Red blood cell production (hematopoiesis) occurs in
the red bone marrow, not the skin. The integumentary system
provides protection, thermoregulation, sensation, vitamin D
synthesis, and excretion.
Epidermal Layers (Strata)
6. The five layers of the epidermis, from deepest to most
superficial, are:
A) Corneum, lucidum, granulosum, spinosum, basale
, B) Basale, spinosum, granulosum, lucidum, corneum
C) Basale, granulosum, spinosum, lucidum, corneum
D) Spinosum, basale, granulosum, corneum, lucidum
Correct Answer: B
Rationale: The five strata of the epidermis, from deepest to
most superficial, are: stratum basale, stratum spinosum,
stratum granulosum, stratum lucidum (only in thick skin), and
stratum corneum.
7. Which epidermal layer is mitotically active and contains
melanocytes?
A) Stratum corneum
B) Stratum granulosum
C) Stratum basale
D) Stratum lucidum
Correct Answer: C
Rationale: The stratum basale is the deepest layer of the
epidermis. It is mitotically active (undergoes cell division) and
contains melanocytes, which produce melanin.
8. The stratum corneum consists of:
A) Living, dividing cells
B) Dead, keratinized cells
C) Melanin-producing cells
D) Sensory receptor cells
Systems Practice Exam Bank (Verified Update!!!)
Format: Question → Answer → Detailed Rationale | Complete
Verified Questions | Graded A+
Coverage: Integumentary System, Skeletal System, and
Muscular System
SECTION 1: INTEGUMENTARY SYSTEM (Questions)
Skin Structure & Layers
1. The three main layers of the skin, from superficial to deep,
are:
A) Dermis, epidermis, hypodermis
B) Epidermis, dermis, hypodermis
C) Hypodermis, dermis, epidermis
D) Epidermis, hypodermis, dermis
Correct Answer: B
Rationale: The skin consists of two main layers — the epidermis
,(outermost) and dermis — plus the hypodermis (subcutaneous
layer) beneath the dermis.
2. Which layer of the skin is composed of stratified squamous
epithelium?
A) Dermis
B) Hypodermis
C) Epidermis
D) Reticular layer
Correct Answer: C
Rationale: The epidermis is composed of stratified squamous
epithelium. The dermis is made of connective tissue, and the
hypodermis is composed primarily of adipose tissue.
3. The hypodermis is primarily composed of which type of
tissue?
A) Epithelial tissue
B) Dense irregular connective tissue
C) Adipose connective tissue
D) Reticular connective tissue
Correct Answer: C
Rationale: The hypodermis (subcutaneous layer) is primarily
composed of adipose (fat) connective tissue. It anchors the skin
to underlying structures and provides insulation, shock
absorption, and energy storage.
,4. The epidermis is avascular. What does this mean?
A) It has many blood vessels
B) It has no blood vessels
C) It has lymph vessels only
D) It receives blood from the hypodermis
Correct Answer: B
Rationale: Avascular means the epidermis has no blood vessels.
It receives nutrients by diffusion from the dermis and from the
underlying connective tissue.
5. Which of the following is NOT a function of the
integumentary system?
A) Protection against mechanical trauma
B) Thermoregulation
C) Vitamin D synthesis
D) Production of red blood cells
Correct Answer: D
Rationale: Red blood cell production (hematopoiesis) occurs in
the red bone marrow, not the skin. The integumentary system
provides protection, thermoregulation, sensation, vitamin D
synthesis, and excretion.
Epidermal Layers (Strata)
6. The five layers of the epidermis, from deepest to most
superficial, are:
A) Corneum, lucidum, granulosum, spinosum, basale
, B) Basale, spinosum, granulosum, lucidum, corneum
C) Basale, granulosum, spinosum, lucidum, corneum
D) Spinosum, basale, granulosum, corneum, lucidum
Correct Answer: B
Rationale: The five strata of the epidermis, from deepest to
most superficial, are: stratum basale, stratum spinosum,
stratum granulosum, stratum lucidum (only in thick skin), and
stratum corneum.
7. Which epidermal layer is mitotically active and contains
melanocytes?
A) Stratum corneum
B) Stratum granulosum
C) Stratum basale
D) Stratum lucidum
Correct Answer: C
Rationale: The stratum basale is the deepest layer of the
epidermis. It is mitotically active (undergoes cell division) and
contains melanocytes, which produce melanin.
8. The stratum corneum consists of:
A) Living, dividing cells
B) Dead, keratinized cells
C) Melanin-producing cells
D) Sensory receptor cells
