Ayushi+'s+Science+Journal

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(Pigs heart)



=Title Page= = = =Living System= all living things have a living system. Or they won't be alive!!!!!!!!!!!!!!!!!!1. But what is a living system? You know that a "system" means number of things working together in a balance form. But it says " living System" then that would mean all living things like Plants Animals humans Coral reef.

page 1 24/2/09

24/2/09 Microsoft Observations 1.Tap water I saw bubbles I saw cells 2. Pond Water I think I saw bacteria I saw dirt green Bubble 3. Leaf I saw water I saw water cells I think I saw an incest 4. Dead leaf I saw holes I saw dry parts I saw water

Conclusion: Everything seems to be made up of smaller pieces, cells, water ,air and maybe other things we can’t see with naked eye.

Page 2

Human Cells Challange
since they are living they must have some places in their body where there are some places where things can come in. **Now i know that the. The red blood cells touch every cell in our body so that time food and oxegnen is exchanged.** Maybe our cells just get their food from us. from the food we eat. Since our cells are all over our body when our food body gets food from the food we eat. **Now I know that our cells get the food from our red blood.** Maybe our cells get the water they need from the water we drink. **Now i know that the water the cells need is carried by the red blood. ** maybe they get oxygen from what we breath in. Now I know that they get the oxygen from the red blood. maybe they get rid of waste by putting it in the place where our we get rid of waste. Now i know that the red blood cells carries all the needs for our cells so it also carries the waste our cells need do get rid of. 
 * How do Human cells get the things the things they need to survive?
 * How do they get food?
 * How do they get water?
 * How do they get oxygen?
 * How do they get rid of waste?

Video: Circulatory and Respiratory System

 * Your lungs and heart don't need rest.
 * I learned the bronqual.
 * I learned barnics.
 * People that get blood from other people have to be sure that the blood that is donated to there body has to be the same as the person who donated it.
 * White cells fight all decease.
 * blood that is donated and is different can cause illness
 * White cells die while fighting against deceases.
 * Te right side of the heart the oxygen just comes in.
 * The left side of the heart the blood has to go a bit further.
 * When you measure your heart the first number is the number caused because of the pumping. The second pump is the normal one.

Page 4 =Your Brain= Your brain controls all the actions that your body does.

Cerebrum When you think you are using your cerebrum. Your short turm memory and your long turm memory both are in the Cerebrum. Cerebellum: The cerebellum is at the back of your brain. It is under the the Cerebrum. it is 1/8 the size of your Cerebrum. because of your cerebellum you have you balance. Or you wont have your balance.

Page 5 Circulatory system revision Answer these questions: 1. What are the basic needs of all living cells? All the cells need food,water,waste disposal and air. Correct. 1/2 2. How do the cells in multicellular organisms get the resources they need to stay alive? They get it because our red blood gets it to them. Correct. OK 3. What is the main function of the left side of the human heart? The fresh blood is stored in the left side of the heart and is sent to the body when required. Correct. Not stored! 1/2 4. What is the main function of the right side of the human heart? <span style="color: rgb(0,0,255);">Blood returning from the body that is not fresh is kept in the right side of the heart. Correct. Not kept. x 5. <span style="color: rgb(0,0,0);">What is the function of the red blood cells? .<span style="color: rgb(128,0,128);">Red blood cells deliver oxygen to the body tissues. Correct 1/2 <span style="color: rgb(0,0,0);">6. What are the main kinds of blood vessels and what functions do they perform? <span style="color: rgb(128,0,128);">The three blood vessels are arteries capillaries and veins. Correct. 1/2 7. <span style="color: rgb(0,0,0);">Describe what happens when blood flows through the lungs.<span style="color: rgb(0,0,255);">The blood cells get oxygen from the lungs. Correct. 1/2 <span style="color: rgb(0,0,0);">8.Describe what happens when blood in capillaries flows past cells? **<span style="color: rgb(84,24,84);">As the capillaries pass through they touch every cell in the body, as they touch every cell in the body food and gas exchange is made. ** <span style="color: rgb(33,162,181);">Correct. 1/2

<span style="font-size: 20pt; color: red; font-family: Arial; mso-bidi-font-size: 13.0pt; mso-bidi-font-family: Arial;">Score: 4 /8 Check these, Ayushi! 15/3/09 Ms Hahn's corrections for you: 1. Food, water, gas exchange, and waste removal! 2. Blood flowing through the circulatory system delivers nutrients and removes waste 3. It collects blood from the lungs and pumps it to the body tissues. 4. It collects blood returning from the body tissues and pumps it out to the lungs. 5. They carry oxygen from the lungs to the cells, and carbon dioxide from the cells to the lungs. 6. Arteries carry blood away from the heart. Veins carry blood to the heart. Capillaries touch all cells and carry out gas exchange and nutrient delivery. 7. Red blood cells release carbon dioxide for elimination and pick up oxygen for delivery. 8. Cells take water, food (sugar), minerals, and oxygen from the blood and transfer wastes to the blood.


 * Thank You for checking. I really apriciate it**.

HEART DISSECTION
First we  cut atrium we looked for the right and the left atrium. We looked at the vovals that transported the blood around the body. And we saw all the tissues. We saw all the musuls.And we saw the dry blood.Then we where free to explore.

Your body produces saliva that brakes down the food into smaller part after been chopped by your teeth. Stomach acid brakes down the food. Stomach acid is so strong that the stomach has to put a thick layer of mucus to protect the stomach from its own acid. Pepsine intestine Large intestine is like a drier 99% of the food you eat is absorbed by your body Urethra take your urine from your bladder. Prediction: The still water will soak the egg and make it soft.

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**//<span style="color: rgb(0,0,0);">THE DISASSEMBLY LINE //<span style="color: rgb(0,0,0);">REVIEW **
1. Why do people eat food? **<span style="font-size: 120%; color: rgb(128, 0, 128);">People eat food because their body requires energy and nutrition for their cells. **

2. What happens to food in the digestive system? **<span style="color: rgb(128, 0, 128);">Food in the digestive system gets broken up into simpler compounds of sugars proteins and fat that can be easily absorbed through the intestines. ** <span style="color: rgb(128, 0, 128);">

3. Describe the path taken by food as it passes through the digestive system? **<span style="font-size: 120%; color: rgb(128, 0, 128);">Before you eat saliva is released in you're mouth. This helps to soften the food and break it up. Whe the food it chewed it form a bolus. The bolus is pushed towards the back of the throat in the direction of the opening of the esophagus. That is a 25 centimeter pipe that takes the food into the stomach.But before it goes to the stomach ,the muscles squeeze the food through the pipe. That takes 2 to 3 minutes. The stomach is like a mixer mashing and churning. In addition to breaking down the food,gastric juices help kill the bacteria that might be in the food eaten. Now in the small intestine the food is broken down into even smaller compounds that are more obsorbable. The small intestine does'nt do //<span style="font-size: 120%; color: rgb(128, 0, 128);">all //<span style="font-size: 120%; color: rgb(128, 0, 128);"> of this on it's own it takes a bit of help from the liver,gallbladder and the pancreas. These organs send different kinds of juices. These juices help to digest the food and allow the body to absorb the nutrients. The nutrients not needed go to the liver. Now the left over part of the food will go to the large intestine from where it will be excreted. **

4. Explain what happens to food at each place in the digestive system.
 * **<span style="font-size: 120%; color: rgb(128, 0, 128);">in the mouth your food is chewed properly . **
 * **<span style="font-size: 120%; color: rgb(128, 0, 128);">Then in the stomach your food is properly mixed so it can easily be observed. **
 * **<span style="font-size: 120%; color: rgb(128, 0, 128);">Your small enstine breakes the food into even smaller pieces and even more obsevent. **
 * **<span style="font-size: 120%; color: rgb(128, 0, 128);">Then it is sent to the body. **
 * **<span style="font-size: 120%; color: rgb(128, 0, 128);">Food not need goes to the large intestine. **
 * **<span style="font-size: 120%; color: rgb(128, 0, 128);">The large intestine disposes it. **

5. How does digested food get to cells? **<span style="font-size: 120%; color: rgb(128, 0, 128);">The red blood cells carry the food,water and air to the cells.Since all the blood is touching the cells gas,food and air exchanges are made. **

6. Why do people need kidneys?<span style="font-size: 120%; color: rgb(128, 0, 128);"> **<span style="font-size: 120%; color: rgb(128, 0, 128);">Without kidneys peoples un-rich blood can't be cleaned. **

7. Describe how kidneys work. **<span style="font-size: 120%; color: rgb(128, 0, 128);">As the blood carring the waste disposed by the cells go through the kidney where it is cleaned. The not needed food changes into urine. Then the urine stored in the bladder. **

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Glossary <span style="font-size: 90%; color: rgb(0,0,0);">Pulse: The result of the blood being pushed through the blood vessels by the beating of the heart.

Heart- the organ that pumps blood deoxygenated blood to the lungs and the oxygenated blood around the body.

Blood vessels- The arteries and vines that carry the blood around the body.

Carbon Dioxide- A waste gas produced by all LIVING systems.

Blood- is a liquid that flows to and from cells in the blood vessels

Blood vessels - the arteries and veins and capillaries that carry the blood around the body

The circulatory system- includes tissues (blood and blood vessels) and organs (for example the heart) that transport life-support substances to cells AND remove waste!

The respiratory system- includes the tissues and organs that (as in lungs) that provide gas exchange (from oxygen to carbon dioxide)between the blood and atmosphere