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sry this is for danielle:
Human Body Slide Notes
-A Stroke- like a heart attack, but in your brain. Some of the same things cause it, as a heart attack. The effects of a stroke depend on where it happened
-The left side of your brain controls the right side of your body, and the right controls the left side of your body. Scientists estimate we only use about 5-10% of our brain
-In one cubic inch of our brain tissue there are 100 million nerve cells, and every one of those is connected to 60 thousand other nerve cells
-Every time you learn something your brain makes another neural pathway
-You move by nerves that carry electricity to your muscles and say, “move!”
- Your heart is made up of only muscle (its called cardiac muscle), and if you take your heart out and put it on a dish it will keep beating until it runs out of energy. A pacemaker in your heart makes all the parts beat together
-Fibrillation- when different parts of your heart beat at different times. Defibrillators are the two paddle things that the paramedics use to start you heart over
-Red blood cells only carry oxygen. They can’t fight bacteria like white blood cells.
-Cancer spreads by breaking off and floats on your blood and lands somewhere else.
-Part of the amount of cholesterol you have is in you genes, but you can control it partly. Smoking can make you get sores in your veins to which the cholesterol sticks easier
-You might have 65 thousand capillaries, but it depends on what size you are, but you have at least ten’s of thousands
-Your body makes over 1 million red blood cells every second. There is no way to fix them all. They live for 120 days
-The white blood cells are the cells that attack germs and keep you alive
-Connective tissue- holds joints together. Sturdy, tough, and what ligaments and tendons are made of
-If you’re not eating protein, your cells get protein form your muscles
-Your pupil (the black place in your eye) has nothing there. It’s a hole. There is a thin layer of conjunctiva, which is the clear part. If there is ever any thing that is stuck in you eye, never pull it out! Because there is clear fluid that will come out which will cause the pressure to fall, which will in turn detach your retina (retinas- the nervous system tissue in the back of your eye)
-Rods and Cones- rods tell your brain when you’re looking at black and white (including shades of gray). Cones tell your brain when your looking at color, although it only works with light. You rod work in dim light
-One lung has 2 little lobes and the other has 3 little lobes. Altogether you have 5 lobes in your lungs, so if one of the lobes fail, you still have 4 left so you can still live
-Alveoli is the medical term for air sacs. You have millions of them in you lungs
-If you take out an adult’s air sacks and stitch them together, like a quilt, it would cover half a tennis court
-You have two tubes going down you throat, your trachea, which leads to your lungs (also your trachea splits in two tubes. One for each lung) and you have you esophagus, which leads to your stomach
-Cilia- wiggles 1000 times a minute, is your “central vacuum cleaner” , it’s in the respiratory system tubes, the stuff hen you breathe (bad stuff) attaches to the mucus on the cilia, and when you smoke it stops moving for 20 minutes
-Emphysema- you get it usually when you have been smoking for a long time. The “swinging doors” in you lungs never let air out. You’re always out of breath. Eventually the air sacks in your lungs pop and they can’t grow back. There is no cure for emphysema
-Cochlea is a part inside the ear, which is filled with fluid
-Semi-circular canals- three in each ear, on each plain, look like pretzels
-You have pain receptors all over your body and if you don’t have them you can’t feel pain
-Streptococcus infects your throat and if not taken care of it, it will go to your heart
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