BIOL227 Lab 4 Exam Questions and Answers 100% Pass

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.




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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.


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