BIOL227 Lab 4 Exam Questions and
Answers 100% Pass
integument - ✔✔skin
Epidermis - ✔✔The outermost layer of the skin this is avascular and
composed of stratified squamous epithelium with 4-5 layers
Stratum corneum - ✔✔The most superficial layer of the epidermis,
constantly exfoliated and replaced.
Stratum lucidum - ✔✔A layer found only in thick skin, such as the palms
of the hands and the soles of the feet.
Stratum granulosum - ✔✔A layer where cells begin to die in the epidermis.
Stratum spinosum - ✔✔A layer of uneven layers of cells in the epidermis.
1
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, Stratum basale - ✔✔The deepest layer of the epidermis where mitosis
occurs, cells receive nourishment, and a distinct border is formed.
functions of Keratinocytes - ✔✔produce keratin, structural support
Melanocytes - ✔✔Cells that produce melanin, influencing skin coloration
and shielding DNA from UV radiation.
Dendritic cells - ✔✔Cells responsible for phagocytosis, digesting infected
cells in the epidermis.
Dermis - ✔✔The underlying connective tissue of the skin that is dense
irregular tissue and contains various sensory receptors and accessory
structures
Papillary layer - ✔✔The superficial layer of the dermis, composed of
areolar connective tissue, containing dermal papillae, friction ridges, and a
capillary network.
Reticular layer - ✔✔The deeper layer of the dermis, made of dense
irregular connective tissue, collagen, elastic fibers, blood supply, and nerve
fibers.
2
100% Pass Guarantee Katelyn Whitman, All Rights
Answers 100% Pass
integument - ✔✔skin
Epidermis - ✔✔The outermost layer of the skin this is avascular and
composed of stratified squamous epithelium with 4-5 layers
Stratum corneum - ✔✔The most superficial layer of the epidermis,
constantly exfoliated and replaced.
Stratum lucidum - ✔✔A layer found only in thick skin, such as the palms
of the hands and the soles of the feet.
Stratum granulosum - ✔✔A layer where cells begin to die in the epidermis.
Stratum spinosum - ✔✔A layer of uneven layers of cells in the epidermis.
1
100% Pass Guarantee Katelyn Whitman, All Rights
, Stratum basale - ✔✔The deepest layer of the epidermis where mitosis
occurs, cells receive nourishment, and a distinct border is formed.
functions of Keratinocytes - ✔✔produce keratin, structural support
Melanocytes - ✔✔Cells that produce melanin, influencing skin coloration
and shielding DNA from UV radiation.
Dendritic cells - ✔✔Cells responsible for phagocytosis, digesting infected
cells in the epidermis.
Dermis - ✔✔The underlying connective tissue of the skin that is dense
irregular tissue and contains various sensory receptors and accessory
structures
Papillary layer - ✔✔The superficial layer of the dermis, composed of
areolar connective tissue, containing dermal papillae, friction ridges, and a
capillary network.
Reticular layer - ✔✔The deeper layer of the dermis, made of dense
irregular connective tissue, collagen, elastic fibers, blood supply, and nerve
fibers.
2
100% Pass Guarantee Katelyn Whitman, All Rights
