Integumentary System Qs Flashcards
What structures does the integumentary system include?
Skin & appendages
State the appendages of the skin
Hair, nails sebaceous glands, sweat glands, skin color and mammary glands
What does the word integument mean?
Covering
What is the principle organ of the integumentary system?
Skin
What are the sheet-like structures of the IS called?
Membranes
What cover & protect the body surface, line body cavities & cover the inner surfaces of hollow organs?
Membranes
What anchor organs to each other?
Membranes
What anchors organ to bone?
Membranes
What covers internal organs?
Membranes
What secrete lubricating fluids that reduce friction during organ movements?
Membranes
What secrete lubricating fluids that decrease friction between bones & joints?
Membranes
State the two major types of membranes
Epithelial & connective
State the three types of epithelial membranes
Mucous, serous, and cutaneous
What is the primary organ of the integumentary system?
Cutaneous membrane
What type of membrane is also known as the skin?
Cutaneous membrane
State the largest organ of the body
Cutaneous membrane
Which membrane has a superficial layer of epithelial cells & underlying area of supportive connective tissue?
Cutaneous membrane
Which epithelial membrane is composed of two layers of tissue known as parental & visceral?
Serous membrane
The ____ sheet of serous membrane is a thin layer of simple squamous epithelium
Epithelial
The ____ sheet of serous membrane is a thin layer of simple squamous epithelium
Epithelial
The ___ tissue layer of serous membrane forms a very thin, glue-like basement membrane that holds & supports the epithelial cells
Connective
The serous membrane that lines the walls of body cavities
Parental
The serous membrane that covers the surface organs found in the body cavities
Visceral
The thoracic cavity serous membranes
Pleura
The abdominal cavity serous membranes
Peritoneum
___ membranes secrete a thin, watery fluid that helps reduce friction & serves as a lubricant when organs rub together & against cavity walls
Serous
Epithelial membranes that line body surfaces opening directly to the exterior of the body
Mucous membranes
These membranes line the respiratory, digestive, urinary & reproductive tracts
Mucous membranes
The thick, slimy material secreted by epithelial cells of most mucous membranes
Mucus
This keeps mucous membranes moist & soft
Mucus
A point of fusion where the skin & mucous membranes meet
Mucocutaneous junction
___ membranes do not contain epithelial tissue
Connective tissue
Connective tissue membranes that line the spaces between bones & joints
Synovial membranes
These membranes are smooth & slick. They secrete a thick, colorless lubricating fluid called synovial fluid
Synovial membranes
These membranes line the small, cushion-like sacs (a.k.a. Bursae) found between moving body parts
Synovial membranes
A.k.a. Oil glands
Sebaceous glands
The outermost layer of the skin
Epidermis
The layer of skin with stratified squamous epithelium
Epidermis
The deeper layer of skin
Dermis
The layer of skin made up of mostly connective tissue
Dermis
The supports the layers of skin & is a thick layer of loose connective tissue & fat
Subcutaneous
A.k.a. Hypodermis
Subcutaneous
This insulates the body from extremes of heat & cold
Fat inside subcutaneous
This structure of skin serves as a stored source of energy & can be used as a food source
Adipose tissue
This structure of skin acts as a shock-absorbing pad & helps protect underlying tissues from injury
Adipose tissue in subcutaneous
The structure of skin that contains tightly packed epithelial cells arranged in many different layers
Epidermis
The innermost layer of the epidermis
Stratum basale
The cells of the innermost layer of the epidermis reproduce themselves via _ .
Mitosis
As cells from the stratum germinativum move towards the surface of the skin, the cells’ cytoplasm is replaced with __.
Keratin
A protein substance that is tough & waterproof
Keratin
This substance provides cells on the outer layer of the skin with a horny, abrasion-resistant, protective quality
Keratin
The tough outer layer of the epidermis
Stratum corneum
Gives skin its color
Melanin
Which layer of skin is pigment found?
Epidermal basal