Tissues & Integumentary System Flashcards
Epidermis
outermost layer
Dermis
under the epidermis
Hypodermis
below the dermis
Stratified squamous epithelial
epithelium that is made up of thin and flat cells
Fibroelastic connective tissue
Adipose tissue
fat tissue
Thick skin
type of skin found on your elbow (made up of 5 layers of stratified squamous epithelial cells)
Thin skin
type of tissue found on your belly (made up of 3 layers of stratified squamous epithelial cells)
Stratum corneum
dead epithelial cells
Stratum lucidum
dead cells mostly filled with keratin
Stratum granulosum
start to die and fill with keratin
Stratum spinosum
cells are alive
Stratum basale
a single layer of cells along the basement membrane of the epidermis
Keratinocytes
the epithelial cells of the epidermis
Keratin
waterproof protein found in skin, nails, and hair
Melanocytes
cells that produce a pigment called melanin
Langerhans cells
macrophages specific to the epidermis
Merkel cells
cells associated with sensory endings
Conical papillae
the multiple small protuberances in the epidermis
Chestnuts
vestiges of the carpal and tarsal pad in horses
Carpus
knee
Tarsus
hock
Ergots
vestiges of the 2nd and 4th digits in horses
Fetlock
the joint between the cannon bone and pastern
Tactile Hair
a special type of hair
Hair shaft
the hair
Medulla
located at the center of the hair shaft
Cortex
the next layer outside the medulla (contains melanin which determines your hair color)
Cuticle
the outermost layer
Hair follicles
found in the dermis and roots the hair to the head
Arrector pili muscles
small bands of muscle connected to the hair follicle that raises the hair to a verticle position when contracting
Sebaceous glands
releases a white, oily sebum
Sebum
important for lubrication of the hair shaft
Hair bulb
extension of the follicle that is found at the base of the hair root
Hair root
the part of hair that secures it within the skin
