The excretory system eliminates waste from the body through various organs. The skin releases sweat from sweat glands and the lungs release carbon dioxide. The large intestine processes and expels solid waste. The kidneys filter blood and produce urine to remove waste and regulate water balance. Together, these organs—the skin, lungs, large intestine and kidneys—work to remove different types of waste from the body.

1. The excretory
system
skin Large intestine kidney lung

2. The excretory system is the system of an organism's body
that performs the function of excretion, the bodily
process of discharging wastes.
The Excretory system is responsible for the elimination of
wastes produced by homeostasis.
There are several parts of the body that are involved in this
process, such as sweat glands, the liver, the lungs and
the kidney system.

3. The skin
Is the outer body covering

4. fluid that is excreted
from skin
called“sweat”
which composed of
99% of water and 1% of minerals.
We lose 500-1000 cubic centimeters of sweat per day

5. Skin has 3
layers
1.The epidermis
the outermost layer of
skincreate our
“skin tone”(melanocytes)
2.The dermis
contains tough
connective tissue,
hair folliclesand sweat
glands

6. 3.subcutaneous tissue
made up of fat and connective tissue

7. Skin function
1.Registers external
stimulation
2.Protect against damage or
infection
4.Control body temperature
5.Store fat
6.Make vitamin

8. The large
intestine

9. The large
intestine's main
function is to
transport food
particles through
the body and
expel the
indigestible parts
at the other end,
but it also collects
waste from
throughout the
body.

10. At about 10 feet long in humans, it transports
the wastes through the tubes to be excreted

11. The typical brown colour of mammal waste is
due to billirubin.
A breakdown product of
normal heme catabolism.

12. The lower part of the large intestine also
extracts any remaining usable water and then
removes solid waste

13. The kidneys

14. kidneys are two bean-shaped organs found on the left and
right sides of the body in vertebrates. They filter the blood in
order to make urine, to release and retain water, and to
remove waste. They also control the ion concentrations and
acid-base balance of the blood.

15. Each kidney feeds
urine into
the bladder by
means of a tube
known as
the ureter.
The kidney
has a bean-
shaped
structure with
a convex and
a concave
border

16. In humans,the kidneys are located high in
the abdominal cavity, one on each side of
the spine, and lie in a retroperitoneal position at
a slightly oblique angle.

17. A
recessed area on
the concave border
is the Renal hilum,
where the renal
artery enters the
kidney and the renal
vein and ureter leav
e.

18. In adult males,the kidney weighs between
125 and 170 grams.In females the weight
of the kidney is between 115 and
155 grams.
125-170 g. 115-155 g.
male female

19. Function of kidneys
Osmolality regulation : Maintaining water and salt level of the
body
H2O
Excretion of wastes: The kidneys excrete a variety of waste
products produced by metabolism into the urine.
SO4

20. The lungs

21. The lungs are the big part of our ability
to live as it performs mist respiratory
function.

22. Cellular respiration is
necessary to provide
our bodies with
energy as without
it,the body's cell will
die and not thrive.
However,cellular respiration
produces the waste product of
carbon dioxide which then
needs it be eliminated from the
system.

23. The lungs contain alveoli
which diffuse the carbon
dioxide from the blood so it
can enter the lung tissue
and eventually leave the
body during exhalation by
nose or mouth.

24. Animal excretory system
Earthworms have nepridia as excretory organs
in every segment of their bodies to collect waste
from the coelom or body cavity. The waste
expelled to the outside through the pores

25. Sponges
have simple structures of excretion. Waste is
excreted through epidermal cells to the
environment

26. Fish
most fish release their nitrogenous wastes
as ammonia.Some of the wastes diffuse through
the gills into the surrounding water.

27. Planaria
have excretory systems called protonephridia consisting of
two tubes along the side of the body,which are
connected through external pores called flame bulb or
flame cells used to remove waste materials.

28. Insect
have excretory organs called Malpighian tubules. The
Malpighian tubules remove wastes from the blood, which
are then eliminated through the rectum,where they are
stored for excretion.

29. Hydra
Their whole body forms a gastrovascular cavity with a
single opening for food to flow in and wastes to exit.

30. Room 216
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