Layers of the skin Flashcards
(23 cards)
What are the layers of the skin?
Epidermis.
Dermis.
HYpodermis.
Which layer is most superficial?
Epidermis
Which layer is in the middle?
Dermis
Which layer is at the bottom with the adipose tissue?
HYpodermis (subcutaneous layer)
What is the Epidermis made up from?
Keratinized, stratified squamous epithelium.
What are the 5 layers of the epidermis from top to bottom?
Stratum corneum.
Stratum lucidum.
Stratum granulosum.
Stratum spinosum.
Stratum basale.
What is most skin in the body referred to?
Thin skin.
Where is thick skin found?
On the palms of the hands and the soles of the feet.
What is the name of the cells in all layers with the exception of the stratum basale?
Keratinocytes
What do keratinocytes do?
They make and store the protein keratin.
What is keratin and what does it do?
It makes hair, skin, and nails hard and provides water-resistant properties.
What layer of skin houses blood vessels, nerves, and other structures?
The Dermis.
What are the two layers of connective tissue in the dermis?
Papillary layer.
Reticular layer.
Inside the papillary layer, what does the cell fibroblasts make?
Collagen.
In which layer of the dermis would you find adipocytes and a small number of blood vessels?
Papillary layer.
Which layer in the dermis contains phagocytes, lymphatic capillaries, nerve fibers, and touch receptors?
Papillary layer.
Which layer in the dermis is deep and thicker and contains lots of blood vessels and a rich sensory and sympathetic nerve supply?
Reticular layer.
What is the reticular layers meshwork of fibers made up of?
Elastin fibers and collagen fibers.
Which skin layer connects to the underlying fascia?
Hypodermis.
The hypodermis comprises blood vessels, loose areolar connective tissue, and what?
Adipose tissue.
The colour of skin is influenced by?
Pigments.
What cells produce melanin?
Melanocytes.
What is the name of the cellular vessel that transfers melanin into the keratinocytes?
Melanosome.
