Skin Part 1- 1 Flashcards
What epithelium are keratinocytes found in?
Stratified squamous epithelium
What is in the stratified squamous epithelium that undergoes terminal differentiation?
Keratinocytes
What layer is made of cuboidal (ish) or columnar (ish) cells?
Single layer of Stratum basale
Which layer of the epidermis has the following characteristic:?
Single layer
Anchonerd to the basement membrane
Attached to other cells
Actively reproductive
Stratum basale
Which layer of the epidermis has the following characteristic:?
Multiple layers
Attached to other cells
Some reproductive activity
Stratum spinosum
Which layer of the epidermis has the following characteristic:?
Single to few layers
Attached to other cells
Cytoplasm filled with Keratohyaline granules
May be invisible in thin skin
Stratum granulosum
Which layer of the epidermis has the following characteristic:?
Few to many layers
Attached to other cells
Terminally differeinated cells- SQUAMES
May be preceded by the stratum lucidum
Stratum corneum
What cells in the epidermis are usually in the basal layer (stratum basale)?
Melanocytes
What cell in the epidermis synthesizes melanin pigment in the melanosomes and when shared with keratinocytes = color of skin?
Melanocytes
What are the antigen presenting cells in the epidermis?
Langerhan cells
What direction to the surface are hair and hair follicles positioned?
Diagonal
What has a bulb with germinal cell matrix?
Hair
HAIR:
What is central, cuboidal/columnar cells
ABSENT in wool?
Medulla
HAIR:
Flat cells, longitudinal to axis?
Cortex
HAIR:
Scaly cells
Pointing upwards?
Outer cuticle
