Integumentary System Flashcards
A pigment-producing cell that becomes more active in the presence of ultraviolet light?
Melanocytes
The protein in the epidermis that thickens and protects the skin?
Keratin
The deeper of two major layers of skin “True Skin” carried out vital functions?
Dermis
The uppermost epidermal layer, consisting of flat keratin-filled cells?
Stratum Corneum
Another name for skin as a whole
Integument
Projections of dermis responsible for fingerprints?
Dermal papillae
The deepest layer of the epidermis , which contains living, dividing cells?
Stratum basale
Another name for the superficial fascia( under the skin)?
Subcutaneous layer (Hypodermis)
Connnect the subcutaneous tissue with the dermis
Elastic fibers
Insulated the body and acts as an energy reserve
Adipose tissue
Carry sensory information from the skin to the brain
Nerves
Supply the skin with nutrients and oxygen
Blood vessels
Any gland that produces sweat
Sebaceous
Sweat glands found throughout the skin that helps cool the body down
Eccrine
Glands that are found only in the ear canal
Ceruminous
Excess activity of these glands contribute to acne vulgaris
Sebum
The product of ceruminous glands
Wax
Sweat glands in the armpits and groin that become active at puberty
Apocrine
Glands that lubricate the eye
Meibomian
A secretion of sebaceous glands that covers new born babies
Vernix caseosa
Sweat glands located in the dermis and subcutaneous layer
Sudoriforeous
Muscle that contracts raising the hair and forming “goose bumps”
Arrector pili
A vessel that carries blood towards the heart or towards the skin?
Vein (AFFERENT )
A blood vessel that carries blood away from the heart or away from skin?
Arteries (EFFERENT)
Outermost portion of the skin
Epidermis
Layer of skin with connective tissues, many blood vessels, nerve endings and glands
Dermis
Deepest layer of skin
Subcutaneous layer or Hypodermis
The pigment that gives blood it’s color
Hemoglobin
A pigment found in some vegetables that is stored in adipose tissue
Carotene
The pigment that helps protect against UV Radiation
Melanin
Factors that affect healing :
Nutrition, Blood supply , Infection, Age
Two major groups of body membranes
Epithelial and Connective tissue
Three epithelial membranes include:
Cutaneous, Mucous, Serous
Layers inside the wall of cavity
Parietal
Layers line the outside of the organ
Visceral
Parietal peritoneum
Lines the abdominal cavity
Visceral peritoneum
Covers the abdominal organs
Parietal pleura
Lines the thoracic cavity
Visceral pleura
Covers the lungs
Visceral pericardium
Covers the heart
The integumentary system includes
Skin, hair, nails, exocrine glands
Cells receive nutrients through diffusion of fluids from the dermis
Avascular
Keratinocytes make up of ____% of cells in the epidermis.
90%
Two regions of the dermis:
Papillary layer and Reticular layer
What projections epidermis & dermis together ?
Dermal papillae
Touch receptors in the papillary layer
Meisner’s corpuscles
Deep pressure receptors in the reticular layer
Paclnian
Fibrous glycoprotein that provides elasticity
Elastin
Two types of sudoriferous “sweat glands”
Eccrine and apocrine
Concentrated into auxiliary & genital areas , Have ducts that empty into hair follicles, contains fatty acids, proteins, begin to function during puberty
Apocrine glands
Produce oil called sebum, skin and hair lubricant, anti-bacterial substances, ducts that empty into hair follicles,activated at puberty
Sebaceous glands
Hardened keratinocytes
Sheets
Thick area over nail matrix
Lunula
The nervous system responds to high body temperature (hyperthermia) by:
Relaxing blood vessels and increasing blood flow
Low body temperature (hypothermia) is corrected by?
Constricting blood vessels and reducing blood flow into capillary beds.
Vitamin D plays a vital role for ?
Immunity
Modified cholesterol molecules in the skin are converted into vitamin D by
Sunlight
Free nerve endings detect ?
Temperature and pain
Meissner’s corpuscles detect:
Light and touch
Pacinian corpuscles detect
Deep pressure
May have accumulations In sebaceous glands called:
Milia
Inflamed pores
Pimples
Clogged with sebum but remains closed
Whiteheads
Sebum darkens when exposed to oxygen
Blackheads
