Integumentary System
Body membranes
functions of body membranes
cover body surfaces - protection
line body cavities
form protective sheets around organs
classified according to tissue types
epithelial membranes
cutaneous membranes
mucous membranes
serous membranes
connective tissue membranes
synovial membranes
Epithelial membranes
simple organs
also called covering and lining membranes
these membranes contain
epithelial tissue layer
connective tissue layer
cutaneous membrane = skin
cutis
dry membrane (waterproof for homeostasis)
outermost protective boundary
construction
epidermis is composed of keratinized stratified squamous epithelium - epithelial
tissue layer
dermis is mostly dense (fibrous) connective tissue - connective tissue layer
mucous membranes (mucosae)
Integumentary System 1
, moist membranes
line all body cavities that open to the
exterior body surface
adapted for absorption or secretion
construction
epithelium type depends on site
loose connective tissue (lamina
propria)
serous membranes (serosae)
line open body cavities that are
closed to the exterior of the body
occur in pairs, separated by serous
fluid, with a visceral and parietal
layer
construction
simple squamous epithelium
areolar connective tissue
specific serous membranes
peritoneum - abdominal cavity
pleura - around the lungs
pericardium - around the heart
Connective tissue membranes
synovial membranes
ease of movement
loose areolar connective tissue only
(no epithelial tissue)
line fibrous capsules surrounding
joints (smooth form of movement)
line bursae — contains synovial
fluid which provides lubrication,
Integumentary System 2
, cushion, preventing pressure
line tendon sheaths
secrete a lubricating fluid to cushion
organs moving against each other
during muscle activity
Integumentary system
consists of the
skin (cutaneous membrane)
skin appendages - accessory structure
sweat glands
oil glands
hair
nails
functions
insulates and cushion deeper body organs - optimum body temp
protects the entire body from
mechanical damage (bumps and cuts)
chemical damage (acids and bases)
thermal damage (heat or cold)
ultraviolet (UV) radiation (sunlight)
microbes (bacteria)
desiccation (drying out)
aids in loss or retention of body heat as controlled by the nervous system
Integumentary System 3
Body membranes
functions of body membranes
cover body surfaces - protection
line body cavities
form protective sheets around organs
classified according to tissue types
epithelial membranes
cutaneous membranes
mucous membranes
serous membranes
connective tissue membranes
synovial membranes
Epithelial membranes
simple organs
also called covering and lining membranes
these membranes contain
epithelial tissue layer
connective tissue layer
cutaneous membrane = skin
cutis
dry membrane (waterproof for homeostasis)
outermost protective boundary
construction
epidermis is composed of keratinized stratified squamous epithelium - epithelial
tissue layer
dermis is mostly dense (fibrous) connective tissue - connective tissue layer
mucous membranes (mucosae)
Integumentary System 1
, moist membranes
line all body cavities that open to the
exterior body surface
adapted for absorption or secretion
construction
epithelium type depends on site
loose connective tissue (lamina
propria)
serous membranes (serosae)
line open body cavities that are
closed to the exterior of the body
occur in pairs, separated by serous
fluid, with a visceral and parietal
layer
construction
simple squamous epithelium
areolar connective tissue
specific serous membranes
peritoneum - abdominal cavity
pleura - around the lungs
pericardium - around the heart
Connective tissue membranes
synovial membranes
ease of movement
loose areolar connective tissue only
(no epithelial tissue)
line fibrous capsules surrounding
joints (smooth form of movement)
line bursae — contains synovial
fluid which provides lubrication,
Integumentary System 2
, cushion, preventing pressure
line tendon sheaths
secrete a lubricating fluid to cushion
organs moving against each other
during muscle activity
Integumentary system
consists of the
skin (cutaneous membrane)
skin appendages - accessory structure
sweat glands
oil glands
hair
nails
functions
insulates and cushion deeper body organs - optimum body temp
protects the entire body from
mechanical damage (bumps and cuts)
chemical damage (acids and bases)
thermal damage (heat or cold)
ultraviolet (UV) radiation (sunlight)
microbes (bacteria)
desiccation (drying out)
aids in loss or retention of body heat as controlled by the nervous system
Integumentary System 3
