The Integumentary System II Flashcards
excessive amount of collagen may produce thick, raised scars called
Keloids or Hypertrophic Scars
a fibrous protein, similar to collagen, and is the basis of what forms elastic tissue.
Elastin
located in the dermis. these cells respond to allergies by releasing small granules called histamines.
Mast Cells
lies directly beneath the epidermis. it is rich in blood vessels and capillaries, which provide nutrients to the upper layer.
Papillary dermis
the ______ _____ houses sensory nerve endings called receptors. Pain receptors are free nerve endings not associated with cells.
Papillary dermis
______ receptors are those that sense gentle touch, pressure or vibration.
Tactile
:light pressure and cold receptors
Meissner’s corpuscles
:long term pressure and heat receptors
Ruffini’s corpuscles
:deep pressure and pain receptors
Pacinian corpuscles
:pressure and pain receptors
Krause’s end bulbs
the _____ _____, is in direct contact with the next layer of skin, the subcutaneous layer.
Reticular Dermis
protects the skin from bacterial invasion by creating an acidic environment that is hostile to bacterial growth.
Acid Mantle
the body’s cushioning acts as a shock absorber and insulator to protect the bones and help support other delicate structures.
Subcutaneous Layer
the adipose tissue cells of this layer give contour and shape to the body and serve as an emergency reservoir for nutrients and water as well as an energy source.
Subcutaneous Layer
epidermis:
Epithelial
dermis:
Connective
muscles:
Muscular
nerves:
Nerve
blood and lymph:
Liquid
which hold bones to other bones (to form joints).
Ligaments
which “tie” muscles to bones.
Tendons
this layer contains the collagen and elastin fibers that provide the skin with its strength and flexibility.
Reticular Dermis
produce sweat, a mixture of water, urea, electrolytes and lactic acid.
Sudoriferous glands
the sweat glands located under the arms, in the genitals and the nipples. these glands secrete an odorless substance, which is triggered by emotions rather than by hormones.
Apocrine glands
the sweat glands located throughout the entire body and are most abundant on the forehead, the palms of the hands and soles of the feet.
Eccrine glands
like the thyroid gland, release their secretions (hormones) into the blood and are known as ductless glands.
Endocrine glands
release their secretions into ducts. these ducts deposit the glandular secretions on the surface of the skin.
Exocrine glands
lowering body temperature. if the body overheats.
Thermoregulation
continually produce and secrete sebum.
largest found on the forehead, nose and back.
Sebaceous glands
a male hormone present in both men and women.
Androgen
sebum mixes with the secretions of the sweat glands, creating a layer of oil and moisture called the.
Acid Mantle
