Integumentary System Flashcards
A primary function of ________ is absorption of calcium in the digestive tracts
Vitamin D
The __________ of the integumentary system allows for excretion and absorption through the skin while still providing protection from external environment
semi-permeable membrane
_________ in the dermal layer provide sensory perception close to the surface of the skin.
Free nerve endings
_________ is the main substance in the epidermis that protects from heat, microbes, and chemicals
Keratin
The tactile cells of the epidermal layer are called ______
Merkel cells (discs)
___________ produce pigment that absorbs UV light
Melanocytes
The five layers of epidermis are
Stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum
The stratum ________ is mainly found in the palms and soles of the feet.
Lucidum
Langerhans cells function to ________
provide immune response
The stratum basale consists of ________ layer(s) of cuboidal/columnar keratinocytes
One
Lamellar granules in the stratum _______ release a lipid-rich secretion to create semi-permeable protective barrier
granulosum
Psoriasis is a skin disorder in which keratinocytes _________
divide more quickly than normal and shed prematurely
The dermis consists of mainly ________ tissue
connective
Free nerve endings in the dermis that sense heat are thermoreceptors while those that sense pain are
nocireceptors
Hair root plexus functions to _________
sense when the associated hair is stimulated
The secretion ________ coats hair and keeps skin soft and pliable
sebum
_________ sudoriferous glands occur after pubescence.
Apocrine
Ear wax is secreted by _______ glands
ceruminous
The cellular response when migrating cells touch one another and stop migrating is known as ________
contact inhibition
List the ABCDE’s of malignant melanoma detection.
Asymmetry, Border (irregular), Color (uneven), Diameter (>0.25in), Elevation
In deep wound healing, __________ deposit collagen to strengthen the wound
fibroblasts
What is the most superficial layer of the skin?
Stratum corneum
Which of the following is not considered part of the skin - Epidermis, Dermis, Hypodermis?
Hypodermis
What is the deepest layer of the epidermis?
Stratum basale, germinativum
