Transcript Diapositiva 1

Presentation made by students of 6º
The digestion
• Digestion is the
process which
converts food into
simple substances,
called nutrients, that
our body can absorb
through the blood.
Teeth
• Teeth are important
for tearing, cutting
and grinding food to
prepare it for
swallowing and
digestion.
Organs
By Estefanía and Arianne
Circulatory System 1
• First,blood from the
veina cava goes to the
right atrium and then to
the right ventricle.
When the heart pumps,
the right ventricle pumps
blood to the pulmonary
arteries and then
through capillaries into
the lungs
Circulatory System 2
• In the lungs , blood
exchanges carbon
dioxide for oxygen.
Blood returns to the
heart through the left
atrium and then goes to
the left ventricle.
Circulatory System 3
• When the heart beats,it
pumps blood from the
left ventricle to the
aorta and to all the parts
of the body.Blood moves
through the heart in one
direction.Valves between
each atrium and
ventricle keep blood
from flowing backwards.
By Lucía and Laura. B
The heart is a hollow
muscular organ. It
pumps blood
around the body
through arteries,
veins and
capillaries.
The parts inside the heart are
called right and left atriums, right
and left ventricle and two valves
The heart has two movements: one when
contracts, called systolic and the other when
it dilates, called diastolic.
Diastolic and systolic movements
Respiratory system
Cristian
How we breathe
Our respiratory system takes in
air and carries oxygen to our
blood.
As our cells work they
use the oxygen and produce
carbon dioxide .
This waste gas leaves our
body when we breathe out.
Breathe in breathe out
• When we breathe in, air
goes through our nose
into our throat.
When we breathe out
carbon dioxide leaves the
body
THE EXCRETORY SYSTEM
By Omar and Iván.
Urinary System
Our body produces waste
products during digestion
which are excrated or
eliminated. The main
products are water,carbon
dioxide and urea.
Sweating
• We also eliminate
salt, water and other
minerals through the
skin.
• Sweat is a salty liquid
expelled through the
skin.
VITAMINS
A vitamin is an organic compound required as a
nutrient in tiny amounts by an organism. A
compound is called a vitamin when it cannot be
synthesized in sufficient quantities by an
organism, and must be obtained from the diet.
Vitamin C
• Vitamin C or L-ascorbic
acid is an essential
nutrient for humans, in
which it functions as a
vitamin. Ascorbate (an
ion of ascorbic acid) is
required for a range of
essential metabolic
reactions in all animals
and plants.
Vitamin A
• This vitamin plays a really
big part in eyesight. It's
great for night vision, like
when you're trick-ortreating on Halloween.
Vitamin A helps you see
in color, too, from the
brightest yellow to the
darkest purple. In
addition, it helps you
grow properly and aids in
healthy skin.
Vitamin K
• Vitamin K (K from
"Koagulations-Vitamin" in
German and
Scandinavian languages)
denotes a group of
lipophilic, hydrophobic
vitamins that are needed
for the posttranslational
modification of certain
proteins, mostly required
for blood coagulation
Vitamin D
• Vitamin D obtained
from sun exposure,
food, and
supplements, is
biologically inert and
must undergo two
hydroxylation
reactions to be
activated in the body.
A system which takes nutrients from food
is the digestive system
Teeth chew food
Stomach mixes food
Liver produces bile
The excretory system
Kidneys filter blood
Sweat is a salty
waste subtance
Urea is a liquid
waste