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Our cartilage turns into bone over time and through mitosis

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Our cartilage turns into bone over time and through mitosis

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Does bone marrow make the same amount of blood cells?

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Does bone marrow make the same amount of blood cells?

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(Info and image from cancerresearchuk.org)

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Cells divide in half, creating more cells, which in turn divide in half, and so on and so fourth. This is called cell division.

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(Image from UCAR Center for Science Education - University Corporation for Atmospheric Research)

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Well, it would probably be really, really good for us, because we would live longer since less people would die from breathing in poison and bad things. Also, our body would take in more oxygen than used to before, causing us to have more energy and do more things, meaning the world would be a better place!

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Burping actually occurs in your digestive system, when gas is swallowed. The air travels out of the esophagus and exits out of your mouth.

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(Image from Bear Creek Family Dentistry)

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Someone who breathes from their mouth can get problems with their sleep. One of those problems might be something called Sleep Apnea, which is when you stop breathing while you sleep. Mouth breathing can also cause your face to change. If everyone did this, there would be a LOT of sleep problems and LOTS of doctor visits, which would probably cause a loss of money for everyone, and make the world poorer. That's just a theory though. =D

(info from my.clevelandclinic.org)

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I know that it's better to breathe from your nose than your mouth, so what would happen if everyone breathed from their mouths?

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I know that it's better to breathe from your nose than your mouth, so what would happen if everyone breathed from their mouths?

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What if there wasn't any nitrogen or carbon dioxide in the air, but just oxygen?

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What if there wasn't any nitrogen or carbon dioxide in the air, but just oxygen?

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What Happens to the Nitrogen We Breathe in?

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What Happens to the Nitrogen We Breathe in?

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Despite common beliefs, only 21% of what we inhale is oxygen. When we exhale, we only breathe out 17%. This is because the alveoli (pictured above) exchange the oxygen into the circulatory system.

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The formula for cellular respiration is C6H12O6 +6 O2 ——>6 CO2+ 6 H2O + ATP. Glucose and oxygen get absorbed to be made into energy.

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This is what the different types of blood cells look like

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This is what the different types of blood cells look like

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Cellular Respiration is the process of turning molecules into energy.

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According to pmc.ncbi.nlm.nih.gov, "The capillaries are very small, having radii of about 2.5 μm and a length which is less than 0.3 mm, and the total thickness of the capillary wall is about 0.5 μm..." The wall of a capillary is less than 0.3 millimeters!!

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Yeast is a single-celled fungus that consumes sugar to use as energy, which includes CO2.

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Question: If cells are the smallest units of life, how can so much happen inside of them?

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Question: If cells are the smallest units of life, how can so much happen inside of them?

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The glucose spread equally between the inside and outside of the cell through diffusion (movement of particles from high to low concentration), whereas the starch was too big to pass through the semi-permeable membrane because only certain molecules can get across it.

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The walls of capillaries are very thin, thin enough to let things pass to and fro through them. How thin are they in actual measurement, though?

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Cellular respiration is when cells intake food, turn it into energy to use, and then eliminate the waste. "Respiration is the process of metabolizing nutrients, making energy in the form of adenosine triphosphate (ATP), and releasing waste products." (from study.com)

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Diffusion causes food nutrients to spread through the blood cells.

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Diffusion causes food nutrients to spread through the blood cells.

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Red blood cells carry carbon dioxide and oxygen. White blood cells fight off viruses. Platelet cells make scabs; they plug holes in the blood vessel walls. Plasma is a liquid that holds all of the above cells, along with nutrients. It is clear and made up mostly of water.

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(Picture from The Worlds of David Darling)

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The final destination of the nutrients in our blood is our tissues and organs. The capillaries carry the nutrients there and where there is not a lot of something, let's say carbs, then the carbs being carried by the blood in the capillaries will move to the spot of low concentration.

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How capillaries connect to veins and arteries.

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How capillaries connect to veins and arteries.

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I think this links to hormones like adrenaline that make your blood rush when you feel strong emotions.

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I know that our faces get red when we're hot because the blood is coming up to the skin to release heat, but why do our faces get red when we're embarrassed? 

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I know that our faces get red when we're hot because the blood is coming up to the skin to release heat, but why do our faces get red when we're embarrassed? 

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What is the final destination of the nutrients that we eat?

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What is the final destination of the nutrients that we eat?

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The duodenum also is the only part of the small intestine that allows water to pass through its walls, absorbing water.

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They are all a part of the small intestine and have villi, but have different jobs. They all have their own purpose and you will have a lack of certain vitamins without each part. For example, without the ileum you will have a lack of B12, it is also the longest section of the small intestine.

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Amount and type of food eaten: Protein-rich foods and fatty foods, such as meat and fish, can take longer to digest than high-fiber foods, such as fruits and vegetables. Sweets, such as candy, crackers, and pastries, are among the fastest foods digested.

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The duodenum is also a major site for absorption of iron. The jejunum is a major site for absorption of the vitamin folic acid and the end of the ileum is the most important site for absorption for the vitamin B12, and bile salts.

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Why do certain foods take significantly longer to digest for some people (like lactose intolerant people)

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Why do certain foods take significantly longer to digest for some people (like lactose intolerant people)

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Question: Is there a difference between what the duodenum, jejunum, and ileum do (they're all part of the small intestine)?

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Question: Is there a difference between what the duodenum, jejunum, and ileum do (they're all part of the small intestine)?

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Thank you

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Hunger is partly controlled by a part of your brain called the hypothalamus, your blood sugar (glucose) level, how empty your stomach and intestines are, and certain hormone levels in your body. Fullness is a feeling of being satisfied. Your stomach tells your brain that it is full.

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The small intestine is called that because it is approximately an inch wide, while the large intestine is approximately 3 inches. And although the small intestine is longer than the large intestine, the small intestine is smaller (in width) compared to the large intestine.

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How does the brain get the signal that your body is hungry?

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How does the brain get the signal that your body is hungry?

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Why is hydrochloric acid inside of our body if it is so harmful?

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Why is hydrochloric acid inside of our body if it is so harmful?

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Answer to Question: Why doesn't the stomach get broken down by acids?

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Answer to Question: Why doesn't the stomach get broken down by acids?

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The stomach has a thick layer of mucus that protects it from being damaged by the acids.

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Why is the Small intestine called that when it is so long?

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Why is the Small intestine called that when it is so long?