BIOL 2301 Exam 2 Q & As (Verified
Answers) 2026 Update
What does the integumentary system consist of? - Correct
Answers ✅skin, hair, nails, sweat glands, and sebaceous
(oil) glands
What does the epidermis consist of? - Correct Answers
✅stratified squamous epithelium tissue
What does the dermis consist of? - Correct Answers
✅Connective tissue and blood vessels
Hypodermis - Correct Answers ✅loose connective tissue
layer of skin below the dermis
What does the hypodermis consist of? - Correct Answers
✅mostly adipose tissue
What are the four cell types found in the epidermis? -
Correct Answers ✅Keratinocytes, melanocytes, dendwritic
(langerhans) cells, and tactile (merkel) cells
Keratinocytes - Correct Answers ✅The most abundant
epidermal cells, they function mainly to produce keratin.
Melanocytes - Correct Answers ✅produce melanin
,BIOL 2301 Exam 2 Q & As (Verified
Answers) 2026 Update
Langerhans cells (Dendwritic) - Correct Answers
✅epidermal macrophages that help activate the immune
system
tactile cells (merkel cells) - Correct Answers ✅sensory
touch receptors
What are the five layers of skin? - Correct Answers
✅stratum basale, stratum spinosum, stratum granulosum,
stratum lucidum, stratum corneum
stratum basale - Correct Answers ✅deepest epidermal
layer made of a single row of cells that undergo rapid cell
division
stratum spinosum - Correct Answers ✅contains web like
system of intermediate keratin filaments attached to
desmosomes. melanosomes and dendritic cells are abundant
stratum granulosum - Correct Answers ✅a layer of the
epidermis that marks the transition between the deeper,
metabolically active strata and the dead cells of the more
superficial strata
Keratinization - Correct Answers ✅The process by which
cells form fibrils of keratin and harden
, BIOL 2301 Exam 2 Q & As (Verified
Answers) 2026 Update
stratum lucidum - Correct Answers ✅a layer of the
epidermis found only in the thick skin of the fingers, palms,
and soles
stratum corneum - Correct Answers ✅the most superficial
layer of the epidermis consisting of dead cells
What is the purpose of the stratum corneum - Correct
Answers ✅protect deeper cells, prevents water loss, protect
from abrasion and penetration, act as a barrier against
biological, chemical, and physical assaults
Apoptosis - Correct Answers ✅programmed cell death
What are the two layers of the dermis? - Correct Answers
✅papillary and reticular
papillary layer - Correct Answers ✅outer layer of the
dermis, directly beneath the epidermis
What does the papillary layer contain? - Correct Answers
✅smaller capillaries, lymphatics, and sensory neurons
Answers) 2026 Update
What does the integumentary system consist of? - Correct
Answers ✅skin, hair, nails, sweat glands, and sebaceous
(oil) glands
What does the epidermis consist of? - Correct Answers
✅stratified squamous epithelium tissue
What does the dermis consist of? - Correct Answers
✅Connective tissue and blood vessels
Hypodermis - Correct Answers ✅loose connective tissue
layer of skin below the dermis
What does the hypodermis consist of? - Correct Answers
✅mostly adipose tissue
What are the four cell types found in the epidermis? -
Correct Answers ✅Keratinocytes, melanocytes, dendwritic
(langerhans) cells, and tactile (merkel) cells
Keratinocytes - Correct Answers ✅The most abundant
epidermal cells, they function mainly to produce keratin.
Melanocytes - Correct Answers ✅produce melanin
,BIOL 2301 Exam 2 Q & As (Verified
Answers) 2026 Update
Langerhans cells (Dendwritic) - Correct Answers
✅epidermal macrophages that help activate the immune
system
tactile cells (merkel cells) - Correct Answers ✅sensory
touch receptors
What are the five layers of skin? - Correct Answers
✅stratum basale, stratum spinosum, stratum granulosum,
stratum lucidum, stratum corneum
stratum basale - Correct Answers ✅deepest epidermal
layer made of a single row of cells that undergo rapid cell
division
stratum spinosum - Correct Answers ✅contains web like
system of intermediate keratin filaments attached to
desmosomes. melanosomes and dendritic cells are abundant
stratum granulosum - Correct Answers ✅a layer of the
epidermis that marks the transition between the deeper,
metabolically active strata and the dead cells of the more
superficial strata
Keratinization - Correct Answers ✅The process by which
cells form fibrils of keratin and harden
, BIOL 2301 Exam 2 Q & As (Verified
Answers) 2026 Update
stratum lucidum - Correct Answers ✅a layer of the
epidermis found only in the thick skin of the fingers, palms,
and soles
stratum corneum - Correct Answers ✅the most superficial
layer of the epidermis consisting of dead cells
What is the purpose of the stratum corneum - Correct
Answers ✅protect deeper cells, prevents water loss, protect
from abrasion and penetration, act as a barrier against
biological, chemical, and physical assaults
Apoptosis - Correct Answers ✅programmed cell death
What are the two layers of the dermis? - Correct Answers
✅papillary and reticular
papillary layer - Correct Answers ✅outer layer of the
dermis, directly beneath the epidermis
What does the papillary layer contain? - Correct Answers
✅smaller capillaries, lymphatics, and sensory neurons
