Notes in Integumentary System

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Published	01/18/2025	The {{c1::epidermis}} is the most superficial layer of the skin and is {{c1::avascular::vascular or avascular}}.
Published	01/18/2025	{{c1::Keratinocytes::cell?}} convert UV rays to vitamin D.
Published	01/18/2025	To lose/dissipate heat, blood vessels {{c1::dilate::dilate or constrict?}} and sweat glands secrete sweat.
Published	01/18/2025	To conserve heat, blood vessels in the dermis {{c1::constrict::dilate or constrict?}} and blood is shunted deeper.
Published	01/18/2025	The epidermis consists of {{c1::4}} or {{c1::5}} specific layers depending on whether the skin is thin or thick.
Published	01/18/2025	{{c1::Epidermal ridges}} are rounded projections that interlock with the dermis.
Published	01/18/2025	In {{c1::stratified squamous}} epithelium, superficial cells are flattened and deeper cells are cuboidal.
Published	01/18/2025	The epidermis is {{c1::keratinized::keratinized or nonkeratinized?}} stratified squamous epithelium.
Published	01/18/2025	In {{c1::nonkeratinized::keratinized or nonkeratinized?}}, most superficial cells are alive and kept moist. It is commonly located in the oral ca…
Published	01/18/2025	The dermis consists of {{c1::dense irregular}} connective tissue and some {{c1::areolar}} connective tissue. It is {{c1::vascular::vasc…
Published	01/18/2025	{{c1::Dermal papillae}} are projections that interlock with the epidermal ridges.
Published	01/18/2025	Areolar connective tissue is composed of {{c1::fibroblasts::cells?}} and is {{c1::vascular::vascular or avascular}}.
Published	01/18/2025	Areolar connective tissue has {{c1::more::more or less}} ground substance than dense irregular tissue.
Published	01/18/2025	The subcutaneous layer is composed of {{c1::areolar}} connective tissue and {{c1::adipose}} connective tissue.
Published	01/18/2025	{{c1::Keratinocytes}} are the most numerous cell of the epidermis (90%) and are found throughout all layers.
Published	01/18/2025	What is the lifecycle of keratinocytes?
Published	01/18/2025	{{c1::Melanocytes}} compose about 8% of the cells in the skin, and are found only in the stratum basale.
Published	01/18/2025	Tactile/merkel cells are found in the {{c1::stratum basale::layer of epidermis?}} and aid in {{c1::touch sensation}}.
Published	01/18/2025	Epidermal dendritic cells are found in the {{c1::stratum spinosum}}, and their role is to phagocytize bacteria and foreign debris.
Published	01/18/2025	The stratum basale is composed of {{c1::cuboidal/columnar::shape?}} keratinocytes but other common cell types include {{c1::tactile cells}} and&n…
Published	01/18/2025	What is the predominant shape of cells in the stratum spinosum?
Published	01/18/2025	{{c1::Keratinization}} is the process where the nucleus shrivels up, the cell dies, and the cell fills up with the protein keratin.
Published	01/18/2025	Keratinocytes begin to undergo keratinization in the {{c1::stratum granulosum::epidermal layer?}}.
Published	01/18/2025	The stratum granulosum is composed of {{c1::3-5 layers of flattened keratinocytes}}.
Published	01/18/2025	The {{c1::stratum lucidum::epidermal layer?}} is only seen in thick skin. It is composed of {{c1::2-3::number?}} layers of pale, flattened, …
Published	01/18/2025	The {{c1::stratum corneum}} is the most superficial layer of the epidermis and is composed of {{c1::20-30::number?}} of dead, anucleate kera…
Published	01/18/2025	The two layers of the dermis are the {{c1::papillary}} layer which is on top, and the {{c1::reticular}} layer which is on bottom.
Published	01/18/2025	The {{c1::papillary}} layer of the dermis contains the dermal papillae, while the {{c1::reticular}} layer of the dermis contains the secreto…
Published	01/18/2025	Hair is associated with {{c1::sebacous glands::structure?}} and {{c1::arrector pili muscles::structure?}}.
Published	01/18/2025	Exocrine glands are found in the secretory portions of the {{c1::reticular}} layer of the dermis.
Published	01/18/2025	Sebacous (oil) glands are {{c1::holocrine::merocrine, apocrine, or holocrine?}} glands.
Published	01/19/2025	The subcutaneous/hypodermal layer of the skin is {{c1::vascular::vascular or avascular?}}.
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