The human body relies on integrated systems working together to digest food, transport nutrients and oxygen throughout the body, and remove waste. The respiratory system takes in oxygen through breathing and delivers it to the blood. The circulatory system then transports the oxygen and nutrients from digestion to cells. Cells use the oxygen and nutrients, and the digestive system breaks down food into nutrients that pass into the bloodstream. Waste is removed by the excretory system including the kidneys and sweat glands.

1. The human body and
nutrition
Amanda
Sierra
Marchante

2. The role of nutrition
Your body trasforms de
food
Your body takes in
oxygen from the eir
In your cells, the cells
oxygen and the nutrients
are converted into oxigen

3. How our systems work together
• The respiratory system passes the oxigen in the takes
• from the air to the blood
• the circulator carries the nutrients and the oxigen to
• your cells
• the digestive trasfrom the food we eat into nutrients
• and passes them to the blood
The excretory consists of the urinary syste and the sweat
glands

4. Digestion
Digestive
Digestive is the set of
changes that
happenst to food as
it travels along the
digestive tract
Absorption
The nutritions pass
to the blood
throungh capillaries
which are found in
the villi
Excrrtion
The final stage of
the digestive
process includes
the preparation

5. How food travels inside of your body
1Digestive begins in your mouth. Your teeth grind the food and your
tongue mixes it with saliva from salivary glands.
2 next, the bolus passes down the pharynx and the oesophagus and into
stomach.
3the stomach secretes substances called gastric juices, which are mixed
with the bolus and from a paste called chyme.
4chyme reaches the small intestine, where it mixes with other juices from
the páncreas, the liver and the small intestine itself, to become chyle.
5the remains of food that has not been absorben in the smaler intestien
continues its journey to the large intestin. There, wáter is absorbed and
the remains are tramsformed into faeces and wait in the rectum to be
expelled from the body through the anus.

7. • Ispiration
• 1the air thatyou take in enters the body through your nostrils
where up nostrils and cleaned of imnpurities by muscus and the
fine hairs inside the nasal cavities
• 2teha air then travels through your larynx, into your windpipe, then
intonyour bronchi and your bronchiloles and finally reaches your
lengs

8. • Expiration
• During expiration, your diaphragm relaxes and your chests cavity
contrasc. Your lungs deflate and became smaller. Now, the air goes
up through your bronchioles, bronchi, windpipeand, larynx and
leaves the body through your nostrils.

9. • Blood
• Plasma. This is the fluid which your blood cells float.
• If you observe an drop of blood under a miscrocope, you will see
that are different types of blood cells in it.

10. Trasport oxygen an
carbón dioxide
They heal wounds
and stop you
bleeding
They defend your
body
frommicroorganism
and viruses

11. • Veins. these are there vessel which carry blood to your heart.
• Arteries. These are the vessels carry blood away from your heart.
• Capillaries. The are very narrow vessel that connet arteries and
venis.

12. • The urinary system
• The unrinary system concist of the kidneys.

13. •
fin