Integumentry System Topic 9 Flashcards
What two cells types make up the stratum basale of the epidermis layer
- Keratinocytes
- Melanocytes
What are the levels in thick skin?
- Stratum basale
- Stratum spinosum
- Stratum lucidum
- Stratum coreneum
What is only present in thick skin?
Stratum Lucidum
What are the two levels of the dermis level?
- Papillary layer
- Reticular layer
What tissue type is the papillary layer?
areolar connective tissue
What type of tissue composes the reticular layer?
Dense irregular tissue
What part of the skin contains half of the bodies insulation?
the adipose tissue in the hypodermis
Where does the epitheal root sheath extend to?
extends into the dermis
What part of the hair expands to the base of the root?
Bulb
Where does the hair matrix derived from?
from basal, single layer of cells
What is in charge of the color of hair?
Melanin
What is the hair papilla do?
- Contains blood supply for growing hair
- Signals for regulation
What is the root hair plexus?
Free nerve ending (touch)
Where does the sebaccous oil gland open to?
opens into the follicle
What causes goosbumps?
arrector pili muscle (SM)
What are the 3 parts to a nail?
- Nail root
- Body
- Free edges
What softens and lubricates hair, skin, antibiotic and prevents drying?
Sebaccous gland
What does the suidorferous gland do?
- Sweat gland
- Cools body
- Waste disposal
- secortory portions in dermis thick and thin skin
What is the modified sweat gland in the ear called?
ceruminous gland-produces wax
What are the modified glands called that are in charge of producing milk?
Mammary glands
What are the 4 major cutaneous sense receptors?
-touch
-pressure
-thermoreceptors
nociceptors
What sensor is in charge of touch?
Meissners corpulscles
What sensors are in charge of pressure?
Pacincan corpusises
When you receive a third degree burn why does it not hurt?
-Nociceptors are destroyed which are in charge of pain
