The document summarizes the key components and functions of the integumentary system. It describes that the integumentary system consists of the skin and its accessory structures like hair, nails, and glands. It then provides details on the layers of the skin, including the epidermis and dermis. It explains the functions of skin like protection, regulation of body temperature, and sensation. It also outlines the roles of hair, nails, sweat and sebaceous glands in the integumentary system.
This presentation will give you a clear idea about the Integumentary system that what is it and what is it for and how it is very much essential for the body. Skin is the most important thing to be understood in this Integumentary system.
The integumentary system comprises the skin and its appendages. Skin + derivatives= Integument.
It aims to protect the body from various kinds of damage, such as loss of water or damages from outside.
The integumentary system in chordates includes hair, scales, feathers, hooves, and nails.
It may serve to water proof, and protect the deeper tissues.
Excrete wastes, and regulate body temperature.
It is the attachment site for sensory receptors to detect pain, sensation, pressure, and temperature.
The branch of science concerned with the bodily structure of humans, animals, and other living organisms, especially as revealed by dissection and the separation of parts.
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
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This presentation will give you a clear idea about the Integumentary system that what is it and what is it for and how it is very much essential for the body. Skin is the most important thing to be understood in this Integumentary system.
The integumentary system comprises the skin and its appendages. Skin + derivatives= Integument.
It aims to protect the body from various kinds of damage, such as loss of water or damages from outside.
The integumentary system in chordates includes hair, scales, feathers, hooves, and nails.
It may serve to water proof, and protect the deeper tissues.
Excrete wastes, and regulate body temperature.
It is the attachment site for sensory receptors to detect pain, sensation, pressure, and temperature.
The branch of science concerned with the bodily structure of humans, animals, and other living organisms, especially as revealed by dissection and the separation of parts.
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
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2. What is the
integumentary
system?
The integumentary
system consists of
the skin and its
accessory structures,
including the hair,
nails, sebaceous
glands, and sweat
glands.
3. Skin…
The skin is the
exterior covering of
the body. It weighs
more than 6 pounds
in the average adult,
and covers more than
3,000 square inches.
It is the largest organ
of the body. It is
supplied with blood
vessels and nerves.
4. Functions of skin…
It inhibits excessive loss of water and electrolytes.
It produces a protective pigmentation to protect the
body against excessive exposure from the sun. It
helps produce the body’s supply of Vitamin D.
The skin provides
protection. It
protects against
invasion by
bacteria and
other harmful
agents. It protects
delicate cells
beneath the
surface from
injury.
5. Functions of skin…
When the body is too hot, the
blood vessels in the skin dilate.
That brings more blood to the
surface for cooling by radiation. At
the same time, sweat glands
secrete more sweat that cools the
body when it evaporates.
The skin
regulates
body
temperature.
When the
body is too
cold, the
skin’s blood
vessels
constrict. This
allows more
heat-carrying
blood to
circulate to
the muscles
and organs.
6. Functions of skin… The skin provides
sensations.
It contains millions
of nerve endings
that act as sensory
receptors for pain,
heat, cold, and
pressure. When
stimulation occurs,
nerve impulses are
sent to the cerebral
cortex of the brain…
and the brain
triggers any
necessary response.
7. The skin has two layers… the
epidermis and the dermis.
The epidermis actually has 4
străta…
Epidermis…
The stratum corneum
(STRĂT um KOR nee um) is
the outermost strata of
the epidermis. It is
mostly dead cells, filled
with a protein substance
called keratin. It is
thicker on the soles of
the feet than on the
eyelids…where there is
less pressure.
Stratum
corneum
8. Epidermis…
The stratum lucidum
(LOO seh dum) is a
translucent layer
lying directly
beneath the
corneum. It may not
even exist in thinner
skin. Cells in this
layer are also dead
or are in the process
of dying.
Stratum
lucidum
9. Epidermis…
The stratum granulosum
(grăn yū LŌ sum) is one
or more layers of cells
starting to die and
become hard. They are
in the process of
keratinization…
(kare ah tin ī ZĀ shun)
becoming fibrous protein
similar to that in hair and
nails.
Stratum
granulosum
10. Epidermis… The stratum germinativum
(jer mah nah TĪV um) is
composed of several
layers of living cells
capable of cell division. It
is the innermost layer of
the epidermis, and
contains melanin… the
pigment that gives color to
the skin. The more
abundant the melanin…
the darker the skin color.
Damage to this layer, such
as in severe burns,
requires skin grafts.
Stratum
germinativum
11. The dermis…
It contains the lymphatics, nerves, nerve endings,
blood vessels, sebaceous and sweat glands,
elastic fibers, and hair follicles.
The dermis
is beneath
the
epidermis
and is
composed
of
connective
tissue.
12. The dermis…
The dermis is divided into
two layers…
1. the papillary layer
(PĂP ah lair ee) is arranged
into microscopic structures
that form ridges. These are
the finger- and footprints
2. The reticular layer
(ruh TĬK yoo ler) is
beneath the papillary
layer; it is a white fibrous
tissue that supports the
blood vessels
13. The dermis…
The
subcutaneous
tissue or
hypodermis is
composed of
adipose and
connective
tissue. It
supports,
nourishes,
insulates, and
cushions the
skin.
The dermis is connected to
underlying tissue by the
subcutaneous tissue.
HYPODERMIS
14. The hair… The hair is a threadlike
structure formed by a group of
cells that develop within a hair
follicle or socket. Each hair
has a shaft that is visible and
a root that is embedded in the
follicle.
A pilomotor (pī lah MŌ ter)
muscle is attached to the side
of each follicle. It is stimulated
by skin irritants, emotional
arousal, or cold temperatures,
and reacts by contracting.
This causes goose flesh or
goose pimples.
15. The hair…
At the base of each hair
follicle is a bulb
enclosing a loop of
capillaries. It is called
the hair papilla
(pah PILL ah), and
provides nourishment
to the hair. It is one of
the few living parts of
the hair, and is
responsible for hair
growth.
16. The hair…
The transparent cuticle covers
the hair shaft like shingles on a
roof, protecting it from the
elements and chemicals, and
from losing moisture. The
cortex provides most of the
hair’s weight. It contains
melanin which provides color to
the hair, stores oils, provides
flexibility and elasticity, and
adds shape to the hair. When the
cuticle is damaged and exposes
the cortex, hair looks dull and
dry. The medulla is a inner
hollow core that runs the length
of the shaft.
17. Sebaceous glands…
Sebaceous (sǐ BAY shuss) glands are oil glands. They
have tiny ducts that open into each hair follicle.
Each
sebaceous
gland secretes
sebum, which
lubricates the
hair and skin.
The amount of
secretion
varies with age,
puberty, and
pregnancy.
18. Nails…
Fingernails and toenails
are hard keratin
structures that protect
the ends of the fingers
and toes. The nail root,
also called the germinal
matrix or nailbed, begins
several millimeters into
the finger and extends to
the edge of the white,
crescent-shaped lunula.
This is where the growth
occurs… approximately
1 mm. per week.
The under-surface
of the nail plate or
body of the nail has
grooves that help
anchor it.
19. Nails…
The cuticle is also called
the eponychium
(ep ǐ NĬK ee um). It fuses
the nail plate and the skin
of the finger together to
form a waterproof barrier.
The hyponychium
(hī poh NĬK ee um) is
under the free edge of the
nail. It also creates a
waterproof barrier, fusing
the skin of the finger to
the underside of the nail
plate.
A lost finger- or toenail
will regenerate.
20. Ingrown nail…
Ingrown nails are simply those that have curled
down or around and are growing into the skin. They
may become swollen and inflamed. Trim toenails
straight across to avoid this growth pattern.
21. Sudoriferous Glands…
Sudoriferous (soo door RĬF or us) glands are
sweat glands. About 2 million are distributed over
the surface of the body, more numerous on the
palms of the hands, soles of the feet, forehead,
and axillae (AG zil ah) or underarms.
22. Sudoriferous Glands…
Sweat glands produce sweat or perspiration. As
sweat collects on the skin surface, it evaporates
and creates a cooling effect. Sweat also rids the
body of waste through the pores of the skin.
As it accumulates, sweat
may become odorous by
the action of bacteria.
The average person
loses approximately ½
liter of fluid through
sweating each day.