Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
31 Cards in this Set
- Front
- Back
|
Extracellular fluid is made of what?
|
Intercellular fluid and plasma.
|
|
|
What are Cristae?
|
Folds of membrane in mitochondria that increace the cells efficiency.
|
|
|
What is the only organelle that has its own DNA and some RNA?
|
Mitochondria
|
|
|
What is Lipofuscin?
|
Pigment found in the long lived cells that is made of residual body leftovers.
|
|
|
What are the functions of the skin?
|
Protection,Thermoregulation, Communication (sensory receptors), Synthesis/ secretion, immune defense.
|
|
|
What is the name of the cell that skin is made of ?
|
Keratinocytes
|
|
|
Describe the Stratum Germinitivum.
|
Single row columnar or cuboidal cells that are active mitotically. Between epidermis and dermis.
|
|
|
Describe the Stratum Spinosum
|
Several layers bound to each other by desmosomes had keratin fibrils.
|
|
|
Describe the stratum granulosum
|
three to five layers of flat cells that have coarse granules (lipid and keratohylaine) Functional barrier to water.
|
|
|
Describe the stratum lucidum
|
Translucent, only visible with thick skin (on heel) flat, and no nucleus, dead.
|
|
|
Describe the stratum corneum
|
flat non nucleated cells that are keratinized, thick cell membrane, tough barrier to movement across skin, dead cells.
|
|
|
What is the long name for skin?
|
Keratinized stratified squamous epithelium.
|
|
|
What are melanocytes?
|
Branched epithelial cells that synthesize pigment,basal layers of skin and in hair follicles. (germinitivum)
|
|
|
Three skin color factors
|
Melanin, carotene, and blood vessels
|
|
|
What are langerhan cells?
|
In Stratum spinosum and they are a type of macrophage, phagocytic and mononuclear.
|
|
|
Describe the papillary layer of the dermis.
|
Can hold 4-5% of blood supply (regulate heat) made of conncetive tissue, named for the wave like projections into the epidermis, vascular and nerve endings here, the ridges are responsible for fingerprints.
|
|
|
Describe the reticluar layer of the dermis.
|
Deep layer that is rich in fibers and is dense irregular connective tissue.
|
|
|
What is the subcutaneous layer made of?
|
loose Connective tissue and fat cells, binds the skin to the underlying organs.
|
|
|
Another name for subqutanous layer
|
superficial fascia
|
|
|
Name the parts of the hair.
|
Cuticle, cortex, medulla, and shaft.
|
|
|
What are nails made of?
|
Keratin and epithelial cells
|
|
|
Describe the merkel endings
|
end on merkel cells in the lower epidermis respond to fine touch and pressure.
|
|
|
Describe the Missners corpuscles
|
stack of flat cells in a capsule they respond to touch.
|
|
|
Describe the Ruffini corpuscles
|
thin spindle shape in lower dermis, on bottoms of feet etc..attached to collagen and respond to tension.
|
|
|
Describe the Pacinian (lamellated) corpuscles
|
large oval look like sliced onion, 1 nerve spreads out, pressure and vibration.
|
|
|
What are the cartilage cells called?
|
Chondrocytes
|
|
|
What is perichondrium?
|
The protective covering of cartilage.
|
|
|
What are three types of cartilage?
|
Hyaline, elastic, and fibrocartilage
|
|
|
Describe the hyaline cartilage
|
temporary skeleton for embryo, forms epiphyseal plate found in repiratory passages, ventral ends of ribs and the articular surfaces of bones.
|
|
|
Describe the elastic cartilage
|
elastic and collagen fibers, found in the external ear and the epiglottis
|
|
|
Describe the fibrocartilage
|
combines with hyaline and found in the vertebral discs and pubic symphasis.
|
