They say we are what we eat, but how true is that really? If that were true, what food would you be? In this STE(A)M class, we learn about the importance of our …
If you are what you eat
what would you be?
thing we all have in common. everybody
has a favorite and a not so favorite
it is the center of socially distanced gatherings like
thanksgiving and your birthday
people love food
and guess what our bodies love food too in fact this video take place about the process that takes place the digestive system
body break down and digest food
does it prefer certain foods to others
we'll answer those questions and more soon
so without further ado
haha I knew that was going to be a bad idea
everything we eat
undergoes digestion
digestion is the process by which the body breaks down
food into essential nutrients
digestion actually begins the second we take a bite and
and it continues until the food
well terminates
our bodies need digestion
the food we eat is usually too big
and bulky to be easily transported
if we could say absorb pizza
through our skin we wouldn't need
we could just spend all day
hugging a pizza but since we can't
spend all day hugging pizza
it's a good thing that we have a body
to absorb nutrients from a bunch of different sources
I mention nutrients
before so lets define those
nutrients are any substance an organism
needs to survive. you can think of
a human body like a car
we can drive around for a little while
soon we need to refuel
nutrients are the things our bodies use to give us the energy
we need to do basic functions
it's the digestive system's job
to not only break down food that we eat
into the nutrients to help distribute
those nutrients throughout the body
so how many nutrients are there
a bunch
lucky for you this video is only going to
cover the three major forms of nutrients
those are carbohydrates
proteins and fats
carbohydrate is the scientific
term for sugars
sweet foods we eat are full of
different kinds of carbohydrates
bread as well is loaded with carbohydrates
even though they don't taste that sweet
surprising that ice cream a piece of toast
and french fries all break down into similar things
in the body but its true
digestion of carbohydrates or carbs
actually begins in the mouth
when our teeth and saliva make our food
mushy and wet
you'll notice high sugar foods tend to
melt in your mouth more than other food
this is because of a chemical called
amylase in your spit actually
begins to break down carbs right away
which is kind of gross but also
pretty amazing you may think that the stomach
is the most important digestive organ
and it does indeed play an important role
but not so much with digesting carbs the real
star in this case is the pancreas
a long large flat organ behind the stomach
it secretes even more amylase
which further breaks down the complex
carbs into simple sugars like glucose
which are quick and easy sources of fuel
that are quickly absorbed into the blood stream
it seems like a good
source of protein is written on every
food label these days
based on that you know it is a pretty important thing
traditional sources of protein
come from animal products like
chicken beef pork and fish
modern diets are constantly finding
different sources things like nuts
beans seeds and tofu
all have protein so how important
is protein anyway
protein is broken down into building blocks
called amino acids
20 essential amino acids out there
that are used to repair our cells and build
new proteins of those 20
our bodies only produce 9 amino acids
on it's own that is not even half
which is why it is up to each of us to make
the difference with our diet the stomach is
the most important organ this time around its
three layers of muscle help to grind
and squeeze the food we eat turning it into
chemicals known as enzymes
to break down the long polypeptide bonds
that make up proteins
imagine a long chain of paperclips
that are all linked together and twisted up
the paper clips can be thought of as amino acids
the enzymes in our stomach
acid are powerful enough to uncoil
and separate each of the paperclips
into smaller chains that are more
easily absorbed in the small intestine
directly into the blood stream
all of the cells in our bodies
from skin cells to organ tissue
are made up of proteins many of which are only
possible thanks to the amino acids we eat
this answers the question by the way
we are what we eat
but just because you eat peanut butter doesn't
turn you into peanut butter it just
means that the same amino acids that make up peanut
butter also make us up
isn't that amazing
fats have a bad reputation
on the grocery aisles the opposite
of proteins people tend to think
fats are worse for us that carbohydrates
and proteins some foods are labeled
low-fat or fat free
prompted by the idea that eating fat
makes people fat
in some cases this is true since eating
an excess can cause health issues
but fats aren't all bad they are actually
essential to our health in fact most people
aren't eating enough healthy fat
some fats like lard
and butter have a reputation of being slimy
or greasy but healthy forms of fat
can be found in cooking oil, nuts
fish and avocados
fat begins the digestion in our mouths
but the majority of fat digestion takes place in
the small intestine most of the work is
done by the liver which secretes fat
metabolizing enzymes and the gall bladder
that secretes something called bile
it's basically yellow body goop
and as far as energy
science is constantly
finding that fats are a great form of
long term fuel its even
suggested that our brains prefer to
use digested fats for fuel
rather than carbohydrates
no wonder that fatty fish is often called brain food
another little known job of fat is absorbing
vitamins and minerals certain vitamins
can only be stored and retrieved from
fat cells in our body vitamins a b c
d e and k are all fat
soluble meaning they dissolve in fats
here is a brief description
of the importance of these vitamins
i will try to be quick
vitamin a is found in carrots pumpkins
sweet potatoes and other red and orange fruits and vegetables
its great for eyesight
vitamin b is for our metabolism
how we make energy its
usually with a number after it like b 3 6 or 12
vitamin c is found in juice like orange juice
which is why we drink it when we are feeling sick
it's job is to beef up our immune system
vitamin d is about keeping our bones strong and healthy
vitamin e is a natural antioxidant
which basically means it protects ourselves from
further damage and lastly there is vitamin
k it's most important job is to clot our blood
when we have cuts and scrapes
we'll be doing a quick experiment to demonstrate
how to extract a useful protein
from an otherwise normal thing we drink
milk what you'll need
is milk preferably whole
and vinegar this also works with
lemon juice but the measurements will be slightly
off. i also recommend
some bowls and paper towels
to make sure that everything stays nice
and clean start by
1 cup of milk into a microwaveable bowl
then heat the milk using the microwave
next add
about a tablespoon of vinegar
to the mixture and begin to stir
that's all you will start to notice
chunky bits in the milk the more you stir
and after a little while
you'll notice a pale yellow liquid seperating
out of the milk what we have essentially
made is cottage cheese or
curds in way from the old nursery rhyme
little miss muffett
what we've really done though is
what your stomach does to separate proteins
from milk vinegar is acidic
which affects the unique protein
in the milk known as casein protein
and causes it to clump together
imagine this happening on a smaller scale
in your tummy when you eat something
your body literally pulls the important stuff out
of the mixture and transfers it to the part
of the body that need it the most
this is completely fine to eat as well by the way
it just taste really gross by itself
if you add salt or
a slice of ham and put it on a cracker you are
in business but otherwise it is
gross cottage-y cheese business
i just knew that was going to be a bad
idea oh
thank you guys for watching
this video i hope you learned something
cool about digestion if you
are interested in learning more the library
has cool books about digestion
books like this one
wait no

this one feel free to stop by
during our shortened
operating hours from 9 – 1 on
Mondays through fridays and 10 – 1 on Saturdays
and of course curbside is still an option
at the Panama City Beach Library
and there is another video coming at you guys in the next
two weeks or so
look out for it and we'll see you next time

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