Notes in 2- Skin

To Subscribe, use this Key

Status	Last Update	Fields
Published	02/10/2024	The {{c1::skin}} is the largest organ in the body, made up of the 4 primary tissues, it has its own nerve and blood supply.It has three component laye…
Published	02/10/2024	Functions of the skin
Published	02/10/2024	What are the functions of the skin?
Published	02/10/2024	The skin is made up of two layers which differ in function, embryological origin, and appearance:[1] {{c1::Epidermis}}- Epithelium- Forms boundary bet…
Published	02/10/2024	There are four basic cell types in the epidermis 1. {{c1::Keratinocytes}}- Most frequent, contains keratin, hard, resistance to abrasion- Extrude…
Published	02/10/2024	The {{c1::epidermis}} is a stratified squamous keratinising epithelium with 5 not sharply defined layers formed by maturing keratinocytes, that contin…
Published	02/10/2024	The epidermis is a stratified squamous keratinising epithelium with 5 layers formed by maturing keratinocytes, that continue …
Published	02/10/2024	{{c1::Stratum basale (germinativum)}} is the first layer of the epidermis (from bottom to top) that:- Contains tall columnar cells interspersed with M…
Published	02/10/2024	{{c1::Stratum spinosum}} is the second layer of the epidermis where kertinisation begins, it also forms the majority of the epidermis.When cells shrin…
Published	02/10/2024	The stratum spinosum is known as the prickle cell layer because of the {{c1::desmosome junctions}} between keratinocytes which look like prickles or s…
Published	02/10/2024	{{c1::Stratum granulosum}} is the third layer of the epidermis that is defined by the presence of keratohyalin granules, which are one of the pre…
Published	02/10/2024	{{c1::Stratum lucidum}} is the fourth layer of the epidermis, sometimes identified - between the stratum granulosum and stratum corneum laye…
Published	02/10/2024	{{c1::Stratum corneum}} is the fifth layer of the epidermis where keratinisation ends (keratohyaline granules are converted to keratin).The cells have…
Published	02/10/2024	{{c1::Keratinisation}} is the organic process whereby keratin is deposited in cells and these become horny as in dead skin, nails, hair.Basal keratino…
Published	02/10/2024	{{c1::Psoriasis}} is a skin autoimmune disorder that affects keratinisation characterised by bumpy red patches and white scales.
Published	02/10/2024	Epidermal thickness varies around the body Palms of hands & soles of feet → {{c1::thick}} skinAbdominal skin → {{c1::thin}} skinThe epidermal…
Published	02/10/2024	The dermis, which underlies the epidermis, is made up of two layers:{{c1::Papillary}} layer - Loose connective tissue - Cellular (has more c…
Published	02/10/2024	The {{c1::papillary}} layer of the dermis is made up of {{c1::loose}} connective tissue, it is superficial to the epidermis.It has an irregu…
Published	02/10/2024	The {{c1::reticular}} layer of the dermis is made up of {{c1::dense irregular}} connective tissue, it is deep to the epidermis.It contains c…
Published	02/10/2024	{{c1::Skin colour}} is determined by multiple factors:1. Blood flow to skin2. Carotene 3. Melanin - which is produced by {{c2::melanocytes}} in t…
Published	02/10/2024	Hair is derived from the {{c1::epithelial}} layer.It is important for skin repair in humans, and thermoregulation in other animals.Stages of…
Published	02/10/2024	A hair follicle is associated with two essential structures:[1] {{c1::Arrector pili muscles}} - M in the micrograph.- Attached to follicle root and ba…
Published	02/10/2024	{{c1::Nails}} are the distal end part of each digit, made up of a strong plate of hard keratin.The {{c2::nail bed}} is a specialised form of skin epit…
Published	02/10/2024	{{c1::Sebaceous}} skin glands are majorly associated with hair follicles but occur in other places.They are acinar-shaped and holocrine-secreting…
Published	02/10/2024	{{c1::Eccrine/Merocrine sweat glands}} are simple tubular glands located in the palm, soles, and the forehead.The secretory component i…
Published	02/10/2024	{{c1::Apocrine sweat glands}} are sweat glands mainly located in the axilla and the groin.The secretory component is a coiled secretory gland&nbs…
Published	02/10/2024	Apocrine sweat glands vs Eccrine sweat glandsWhat's the difference in terms of secretion method and location in the body?
Published	02/10/2024	What are the mechanisms used for thermoregulation in the skin?
Published	02/10/2024	How is the skin a sense organ?
Published	02/10/2024	Meissner corpuscles vs Pacinian corpusclesWhat's the difference between them?
Published	02/10/2024	Skin repair stages:[1] Formation of a Blood Clot[2] Blood Clot coagulates to form a Scab[3] The Collagen in the Dermis below the injury forms Granulat…
Published	02/10/2024	Describe the four stages of skin repair.
Published	02/10/2024	5249624169d943dd854c28c5f1d33345-ao-1
Published	02/10/2024	5249624169d943dd854c28c5f1d33345-ao-2
Published	02/10/2024	5249624169d943dd854c28c5f1d33345-ao-3
Published	02/10/2024	5249624169d943dd854c28c5f1d33345-ao-4
Published	02/10/2024	5249624169d943dd854c28c5f1d33345-ao-5
Published	02/10/2024	5249624169d943dd854c28c5f1d33345-ao-6
Published	02/10/2024	5249624169d943dd854c28c5f1d33345-ao-7
Status	Last Update	Fields