The three-layered integumentary system helps regulate body temperature through sweating. Sweat glands called sudoriferous glands secrete sweat through ducts and pores to cool the body as it evaporates off the skin. Some sweat glands in the underarms and pubic region secrete a thicker sweat through apocrine glands that can develop an odor when bacteria are present. Medical terms relate to sweat conditions, such as anhidrosis meaning no sweat and hyperhidrosis meaning excessive sweat. Burns are skin damage that can vary in seriousness depending on depth and surface area calculated using the rule of nines method.

1. Integumentary
System:
How Your Body Reacts to Forces
of Internal and External Heat
Vanessa Ross Mosier
Bio 120

2. Overview: The Skin
 Epidermis: the thin, outer
membrane layer.
 Dermis: the middle, fibrous
connective tissue layer.
 Subcutaneous Layer: the
innermost layer, containing
fatty tissue (also known as
Subcu or subq)

3. Word Building
 Combining Form:
cutane/o
 Combined With:
sub- -ous
 Medical Term:
subcutaneous
 Definition: pertaining
to under the skin

4. Sweat/Perspi  The body contains
about 2 million
ration glands, called
Sweat glands assist Sudoriferous glands.
the body in  Sweat travels to the
maintaining its surface of the skin in
internal temperature a sweat duct.
by creating a cooling  The surface
effect as sweat opening of a sweat
evaporates. duct is called a
sweat pore.

5. Sweat con’t.
 Sweat contains a small
amount of waste product
but is normally colorless and
odorless.
 However, there are sweat
glands called Apocrine
Glands in the pubic and
underarms that secrete a
thicker sweat, which can
produce an odor when it
comes into contact with
bacteria on the skin.

6. Sweat con’t.
 Combining Form: hidr/o  Combined Form: hidr/o
 Combined with: an- -osis  Combined with: hyper- -
osis
 Medical Term: Anhidrosis
(an-hi-DROH-sis)  Medical Term: Hyperhidrosis
(high-per-hi-DROH-sis)
 Definition: abnormal
condition of no sweat.  Definition: abnormal
condition of excessive
sweat.
 Diaphoresis (dye-ah-for-
REE-sis): Profuse Sweating

7. Burn
Definition: Seriousness depends on the
amount of body surface
involved and the depth of the
Damage to the skin
burn.
that can result from exposure
to open fire, electricity,
ultraviolet light from the sun,
or caustic chemicals.

8. Rule of Nines
 A method for determining percentage of
body burned. All sections added together
will equal 100%.

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