Integumentary System Functions
protection
first line of defense against abrasive activity, barrier against water loss
What are the cells that manufacture and store keratin
Keratinocytes
What are the two layers of the dermis superficial to deep
papillary layer, reticular layer
What part of the hair do you see growing past the epidermis?
Hair shaft
What is the most common type of skin cancer
Basal cell carcinoma
Sensory
The hair root plexus surrounding the base of the hair follicle senses a disturbance then transmits the info to the CNS
What layer of the epidermis has dead keratinocytes that slough away
Stratum corneum
What kind of tissue composes the papillary layer
Areolar connective tissue
what is a hair papilla
Contains blood capillaries and nerve endings from the dermis.
What is the most aggressive type of skin cancer, its uncontrolled growth of melanocytes
melanoma
Thermoregulation
Eccrine Sweat glands secrete water to cool the body when hot.
What layer is only found on the soles of our feet and palms of our hands (thick skin)
Stratum Lucidum
These touch receptors are found in the papillary layer of the dermis
Meissner corpuscle
What are the 3 stages of hair growth
Anagen phase, catagen phase, telogen phase
What kind of burn goes all the way down to the bone and muscle
fourth degree burn
Vitamin D syntheses
The epidermal layer of the skin synthesizes vitamin D
Desmosomes strengthen the bond between the cells in this layer
Stratum Spinosum
What kind of tissue is the reticular layer composed of
irregular connective tissue
What is a nail root
matrix of proliferating cells from stratum basale that enables the nail to grow continuously
What is the overproduction & accumulation of sebum that blocks hair follicles
Acne
Skin Pigmentation
Melanocytes produce melanin, which are in the stratum basale of the epidermis
dermal papilla are found in the superficial part of this layer.
Stratum Basale
what 2 types of connective tissue are found within the hypodermis
Areolar and Adipose
The Sudoriferous gland responsible for watery sweat
Eccrine gland
What will a patient develop if they lay on a bony prominence for too long.
Bed sore / decubitus ulcer