Skin And Body Membranes Flashcards
Types of epithelial tissue
Mucous, Serous, and Cutaneous
Types of connective tissue
Synovial
Location of Mucous membranes
Respiratory, digestive, urinary, and reproductive tracts
Location of Serous membranes
Line internal central body cavities and cover their organs
Location of Cutaneous membranes
Covers the body’s exterior
Location of Synovial membranes
Line joint cavities of synovial joints
Function of Mucous membranes
Protection, lubrication, secretion, and absorption
Function of Serous membranes
Produce a lubricating fluid that reduces friction
Function of Cutaneous membranes
Protects deeper body tissues from external insults
Function of Synovial membranes
Produce lubrication to decrease friction within the joint cavity
Radiation from the skin surface and evaporation of sweat are two ways in which the skin helps to get rid of body what
Heat
Fat in the what tissue layer beneath the dermis helps to insulate the body
Subcutaneous
The waterproofing protein found in the epidermal cells is called what
Keratin
A vitamin that is manufactured in the skin is what
Vitamin D
A localized concentration of melanin is what
A freckle
Wrinkling of the skin is due to loss of the what of the skin
Elasticity
A decubitus ulcer results when skin cells are deprived of what
Oxygen
What is a bluish cast of the skin resulting from inadequate oxygenation of the blood
Cyanosis
What are translucent cells containing keratin
Stratum corneum and stratum lucidum
What are dead cells
Stratum corneum and stratum lucidum
Dermis later responsible for fingerprints
Papillary layer
Vascular region
Dermis as a whole
Epidermal region involved in rapid cell division; most inferior epidermal layer
Stratum basale
Scalelike cells full of keratin that constantly flake off
Stratum corneum
Site of elastic and collagen fibers
Dermis as a whole
Site of melanin formation
Stratum basale
Major skin area from which the derivatives arise
Epidermis as a whole
Greater amounts of the pigment what are produced when the skin is exposed to the sun
Melanin
The most abundant protein in dead epidermal structures such as hair and nails is what
Keratin
What is an oily mixture of lipids, cholesterol, and cell fragments
Sebum
The oldest epidermal cells in the epidermis are found in the what
Stratum corneum
The externally observable part of the hair is called the what
Shaft
The what provides mechanical strength to the skin
Dermis
A blackhead is an accumulation of oily material produced by what
Sebaceous glands
Thing muscles attached to hair follicles that pull the hair upright during fright or cold are called what
Arrector pili
The most numerous variety of perspiration gland is the what
Eccrine sweat glands
The sheath formed of both epithelial and connective tissues is the what
Hair follicle
A less numerous variety of perspiration gland is the what
Apocrine sweat gland
What are specialized nerve ending that respond to temperature and touch
Cutaneous receptors
What becomes more active at puberty
Sebaceous glands and apocrine sweat glands
Part of the heart-liberating apparatus of the body is the what
Eccrine sweat glands
Full thickness burn; epidermal and dermal layers destroyed; skin is blanched
Third degree burn
Blisters form
Second degree burn
Epidermal damage, redness, and some pain
First degree burn
Epidermal and some dermal damage; pain; regeneration is possible
Second degree burn
Regeneration is impossible, requires grafting
Third degree burn
Pain is absent because nerve endings in the area are destroyed
Third degree burn
Importance in rule of nines
It allows estimation of the extent of the burns so that fluid volume replacement can be calculated
Epithelial cells, not in contact with the basement membrane, develop lesions; metasizes
Squamous cell carcinoma
Cells of the lowest level of the epidermis invade the dermis and hypodermis; exposed areas develop ulcer; slow to metasize
Basal cell carcinoma
Rare but often deadly cancer of pigment-producing cells
Malignant melanoma
ABCD rule
A= Aysemmerty B= border C= Color D= Diameter
Skin inflammations that increase in frequency with age
Dermatitis
Cause of graying hair
Delayed-action gene
Small white bumps of the skin of newborn babies, resulting from accumulations of sebaceous gland material
Milia
Reflects the loss of insulating subcutaneous tissue with age
Cold intolerance
A common consequence of accelerated sebaceous gland activity during adolescence
Acne
Oily substance produced by the fetus’s sebaceous glands
Vernix caseona
The hairy cloak of the fetus
Languo