Pathway of Air Flow
Our journey of oxygen into the lungs and back begins when the brain stem sends a message to the diaphragm which is a muscle under the lungs.
As the diaphragm moves down the lungs expand.

Air enters the nose and mouth and enters the nasal passages.
Your nose and nasal passages have tiny hairs called cilia and mucus that help filter dirt and pollen out of the air.
The air next moves to the pharynx which is located at (the back of the mouth)
From the pharynx, it moves to the larynx which is commonly called the voice box.
the voice box (makes sounds when air
passes over the vocal cords)
Epiglottis: the flap of connective tissue that covers
over the larynx during breathing
It stands open during breathing, allowing air into the larynx. During swallowing, it closes to prevent choking on food

From the larynx, air travels to the Trachea which is a rigid tube made of cartilage.
The trachea leads into two tubes called the left and right bronchus
These tubes continue to branch until you reach a tiny air sac called a alveoli
At the alveoli, oxygen diffuses into the capillaries and carbon dioxide diffuse into the alveoli and is exhaled.
This process is repeated over and over again.
Updated Version
https://youtu.be/k-BkmhLD42U

Learn the difference between an endothermic reaction and an exothermic reaction.
Endothermic reactions take in energy and might be cold to the touch. Exothermic reactions give off energy and will sometimes be warm or hot to the touch.

At @MooMooMath and Science, we end our videos with kindness multiplies kindness. In each of my #shorts I like to tell a quick Kindness story in order to inspire myself and others to practice kindness.
Acts of kindness make a lasting positive impact on the people around you.

You can find all of my kindness stories in this playlist.
https://youtube.com/playlist?l....ist=PLurjkZV1ykGZs20

Chemical reactions
https://moomoomath.com/exother....mic-vs-endothermic-c

In this video, I answer the question, " what makes an amphibian an amphibian?" Learn about the main characteristics of amphibians. Examples of amphibians include frogs,salamanders,newts,toads, and cecillians. All amphibians are vertebrates that can go through some type of metamorphasis.

More about Amphibians
http://www.moomoomathblog.com/....2022/04/amphibians.h

The cytoplasm is the fluid found in cells.
Cytoplasm is found in eukaryotic and prokaryotic cells.
The fluid of cytoplasm is called cytosol. It is made up mainly of water
The organelles are found floating in this liquid along with many other items
You can almost think of the cytoplasm as a crowded swimming pool

How is this city like a cell?
They both need to store water and other materials.
Welcome to MooMooMath and Science and organelles and in this video, I will cover the main functions of a vacuole.
Vacuoles store water and waste and other materials in eukaryotic cells. Remember these are cells with membrane-bound organelles and a nucleus.

Vacuoles are storage sacks in plants and animal cells protists but they are not found in
bacterial cells in addition to storing water, vacuoles also store enzymes, waste, and even old damaged organelles.

You may also enjoy
Mitochondria
https://www.youtube.com/watch?v=SWsjm2a-usk

In this video learn the difference between evaporation and condensation.

Learn the diference between saturated,unsaturated, and supersaturated solutions.
Science Standard
When you have an unsaturated solution less solute then the solution is capable of dissolving is mixed in.
With a saturated solution there is so much solute present that if you were to add any more it will not dissolve and excess salt will fall to the bottom of the container.
If you mix in 40 grams of salt at 90 degrees into 100 grams of water.

A supersaturated solution contains more than the maximum amount of dissolved solute then the solvent is able to dissolve at a given temperature.

S8P1.a Develop and use a model to compare and contrast pure substances (elements and compounds) and mixtures.

Transcript
http://www.moomoomathblog.com/....2022/11/saturated-un

After passing through the small intestine food travels into the large intestine.
Your large intestine is roughly 9 feet in length but gets it’s name because it has a larger diameter than the small intestine.
Your large intestine is also called the colon.
The large intestine is divided into several sections.

Transcript
http://www.moomoomathblog.com/....2021/01/all-about-la

Learn the difference between a Diploid Cell and a Haploid cell. A diploid cell contains pairs of chromosomes and is represented with 2n. A haploid cell contains a single chromosome and is represented by n.

For more information on Diploid and Haploid Cells
http://www.moomoomathblog.com/....2022/02/diploid-cell

Difference between Organic and Inorganic Compounds
Organic compounds contain carbon. There are at least four important organic compounds, lipids, proteins, carbohydrates, and nucleic acids.
Inorganic compounds do not contain carbon and usually are more simple compounds.
There are some compounds that contain carbon and are inorganic like carbon dioxide.
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For more Life Science videos and summaries see,
http://www.moomoomath.com/Midd....le-School-Science-an

In this video, I cover the factors that impact population size. A population is a group of organisms of the same species that live in a certain area.

Transcript
http://www.moomoomathblog.com/....2021/03/factors-that

Take a look at the cuttlefish and it's amazing ability to change it's color based on the background.

Cells must move all types of objects into and out of a cell. Large molecules like proteins, ions and polar molecules like water can be difficult.
Facilitated diffusion helps move these molecules into the cell.

Picture Facilitated Diffusion
https://commons.wikimedia.org/....wiki/File:0306_Facil
Picture Aquaporin
https://en.wikipedia.org/wiki/....Aquaporin#/media/Fil

Transcript
http://www.moomoomathblog.com/....2020/10/how-does-wat

We hope you are enjoying our large selection of engaging core & elective K-12 learning videos. New videos are added all the time - make sure you come back often to learn more! If you'd like us to cover any additional topics, please let us know. For practice, assessment, and many interactive activities that go along with each video, as well as a teacher/parent dashboard, go to Miacademy.co for Grades K-8 or Miaprep.com for grades 9-12!

Use the following link for a discount on our website - practice games, quizzes, and more to go along with each video: https://www.parents.miacademy.....co/coupon?code=VIDEO

MaKey MaKey is an invention kit that turns everyday objects into a keyboard for your computer. When combined with the internet it allows users to create art, music, and engineering and everything in between! You can check out this kit from our collection and see others like it in our catalog here: http://polaris.plano.gov/Polaris/search/searchresults.aspx?ctx=1.1033.0.0.5&type=Boolean&term=steam%20kits&by=KW&sort=PD_TI&limit=&query=&page=0&searchid=6

This video was filmed and produced by interns from the Plano Mayor’s Summer Intern program.

Quick demo of how you can use drawings with our counter app to vote for favorite snacks or count shapes in the room!

In our latest maker class, we are sharing how to create a life cycle project and use the Secret Code extension to trigger special effects.

Full guide and activities located on our resource page: https://makeymakey.com/pages/how-to

See all our at home classes here: https://makeymakey.com/blogs/b....log/resources-for-te

More about our Beginner Classes: https://makeymakey.com/blogs/b....log/introducing-our-

More about our Intermediate Maker Classes:https://makeymakey.com/blogs/b....log/announcing-new-c

Information about sending kits home for school districts: https://makeymakey.com/blogs/b....log/helping-students

Buy a Makey Makey for home: https://makeymakey.com/products/makey-makey-kit

En Makey Makey kan omdanne næsten hvad som helst til en controller. Denne gadget er perfekt til børn som er begyndt at interessere sig for teknologi.

Til produktet: https://www.conradelektronik.dk/Gamepad-MAKEY-MAKEY-PC-Sort,-R%f8d,-Hvid.htm?websale8=conrad-dk&pi=1081480&ci=SHOP_AREA_33171_0411050

little bits : http://littlebits.cc/

Makey Makey :http://www.makeymakey.com/

Check out the Makey Makey! Learn how to measure the amount of liquid being poured into a glass.