6 Facts About Lungs

1 - An estimated 90% of the lung is filled with air and only 10% is hard tissue.

2 - The lungs are the largest organ is the body.

3 - About 1 litre of air always stays in the lungs no matter how hard we breathe out.

4 - In an average lifetime a person takes around half a billion breaths.

5 - You breath out 23,000 times a day.

6 - You have two lungs, but you could live with just one!

Rubber Bones - Part Two

A week after we put our chicken wish bone into the jar with vinegar, it is ready to be taken out!
It felt like rubber and you could tear it easily.
The acid in the vinegar had dissolved the calcium in the bone and this had left it weak and bendy.

A 19 to 50 year old should be having 1000mg of calcium a day and a baby aged o to 6 months should have 210mg of calcium!
One cup of semi skinned milk contains 301mg of calcium, where whole milk contains 290mg.
You can also get calcium from cabbage,broccoli, Oranges and tofu.

Human Body Experiment

Robber Bones - Experiment no. 1

What did you use?
A thin chicken bone
A small glass jar
Malt vinegar

What did you do?
Place the chicken bone in the jar and cover with the malt vinegar,then leave for a week.

What do you think will happen?
I think the acid in the vinegar will dissolve the calcium in the chicken bone.

Notes - This experiment shows you what your bones would be like without calcium.

Digestion Experiment no.2

What did you use?
3 Beads
A small funnel
A little cooking oil
A see-through tube

What did you do?
Pour the cooking oil into the tube, using the funnel, make sure the inside of the tube in cover.
Now put the beads into the tube and using your hands push them down.

Notes - The see-through tube is acting as your throat, the oil as mucus, the three balls as chewed up food and your hands as the strong muscles contracting to push the food down into your stomach.

Parts of the Brain

Here is a model brain, L ( older brother ) made years ago.
I have coloured parts of it in and labeled them for you, so you can now see the different part of the brain.

GREEN - Posture, skilled movement and balance.

BLUE - Vision

PINK - Vision

RED - Hearing

PURPLE - Sensations from the skin.

ORANGE - The signals the begin body movement.

LITE ORANGE - Planning complicated movements.

DARK BLUE - Speech

BLACK - Behaviour and emotion.

HEART

To start off our human body project we did the heart. Here is some of what we did.


4 HEART FACTS


1. Your heart is the size your fist.
2. An adult's heart beats between 60 - 80 times a minute when they are resting.
3.You have 100,000km of blood vessels.
4.The heart of a new born baby beats 120 -160 times a minute.


In the picture above we are looking at how you blood goes in the heart one way and comes out the other.


PROBLEMS WITH THE HEART

HEART ATTACKS

Cause - Most heart attacks occur as a result of coronary artery disease (CAD). CAD is the buildup over time of a material called plaque on the inner walls of the coronary arteries. Eventually, a section of plaque can break open, causing a blood clot to form at the site. A heart attack occurs if the clot becomes large enough to cut off most or all of the blood flow through the artery.

4 ways to help prevent a heart attack

1. Eat a low fat healthy diet with lots of vegetables and fruit!

2. Lower your salt intake!

3. Quit smoking!

4. Do physical activities to improve your heart fitness!