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Body Systems

The 8 Body Systems
by

Dereena Raju

on 24 January 2014

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Transcript of Body Systems

Body Systems
By: Dereena Raju

Skeletal System
There are many functions of the skeletal system. Some of the main ones are protection, structure, movement, and the storage of minerals. The first function is protection. The skeleton is a barrier against any physical harm like the rib cage and the cranium. These two parts of the skeletal system protest the lungs and brain from any damage. The bones also protect the marrow inside the bone. The next function is structure. If we didn't have the skeletal system we would have been a big glop of jelly slithering around in the world. The third function is movement. The bones act as attachments to the muscles. The last important function is the storage of minerals. The bones hold calcium and other important materials. Also, the bones make new red blood cells.
The organs are the bones, joints, and tendons, and cartilage.
The skeletal system works with the muscular system and the respiratory system. The skeletal system helps provide a frame for the muscles and so that we can move. The skeletal system interacts with the respiratory system because it protects the lungs, trachea, vocal cords, and the diaphragm.
Interesting Facts-
The number of bones in your neck are the same amount of bones in a giraffes neck.
The smallest bone is found in your ear. It is the size of a grain of rice.
Your skeleton keeps changing every 10 years, that means your bodies keep renewing themselves so every 10 year you have a new skeleton.
Muscular System
The muscular system has many functions. The most important function is of course stretching and contracting so that we can move. Another function is that the muscular system helps with moving our bodies and flexibility. Without the muscular system we wouldn't really be able to do much.
The organs of the muscular system are muscles nothing else. There are three types off muscles: the cardiac muscles, smooth muscles, and skeletal muscles. The cardiac muscles works by itself to pump blood in and out. The smooth muscles are muscles that you can't control. Your brain tells them what to do without you thinking. Last of all, your skeletal muscles have to be controlled by yourself. These muscles keep us standing upright and gives us power to do things.
The muscular system interacts with the respiratory system, cardiovascular system,, nervous system, and many more. It interacts with the respiratory system since the diaphragm is a smooth muscle. Another interaction is between the nervous system. The muscles provide protection for messages sent down through the body from the brain.
Interesting Facts-
There are muscles in the root of your hair that give you goose bumps. I It takes 17 muscles to smile and 42 to frown.
The hardest working muscle is in the eye.
Circulatory System
There are many functions in the circulatory system. The 3 most important functions are transporting blood, provide the body organs with food, and get rid of harmful by products. Without the circulatory system we would not be alive.
The organs of the circulatory system include the heart and the lungs. Also there is blood vessels which transports blood, arteries which supply the blood to organs, veins which take back the de-oxygenated blood to the heart for purification, capillaries, and venules which are the microscopic vessels that continue from capillaries and merge into veins.
The circulatory system interacts with many systems. For example, the circulatory interacts with the with the nervous system by bringing blood to the brain since the brain survives on blood. Also, it interacts with the digestive system because the bloodstream carries absorbed nutrients to all the cells. A final example is how the circulatory system interacts with the skeletal system because the bones help control plasma levels of calcium ions, which influence heart action.
Interesting Facts-
If you were able to stretch out all of the arteries, capillaries, and veins in one adult it would go around the world 2.4 times.
The heart of a normal human being beats at least 3 billion times in a life time.
About 8 million body cells die per second, but you gain abouut the same amount per seond.
Digestive System
Respiratory System
Excretory System
Nervous System
Immune System
There are many organs in the digestive system like the salivary glands which produce saliva to breakdown your food, the mouth which of course breaks down your food
mechanically
, then there is the pharynx which leads to esophagus. Then the esophagus pushes your food to your stomach which then digests your food. Then there is the liver which produces bile, the gallbladder which stores the bile made in the liver and then sends it to the small intestine. In the small intestine the food is mixed the bile and this where most of nutrition absorption takes place, the large intestine which absorbs water, the rectum which holds the stool and the anus which lets it out.
The digestive system has many functions. The digestive system turns food that you eat into energy and then gets rid of all the waste products.
The digestive system interacts with the muscular system because the esophagus is a muscle that passes the food to the stomach. It aso interacts with the skeletal system since we use our teeth to break down our food. One last example is how the digestive system interacts with the lymphatic system. The lymphatic system plays a major role in the absorption of fats.
Interesting Facts-
It takes your mouth, esophagus, stomach, small intestine, large intestine, gallbladder, pancreas and liver just to digest a glass of milk..
We make 1 to 3 pints of saliva a day.
A full grown horse?? Their coiled up intestines are 89 feet long.
The primary function of the respiratory system is to supply the blood with oxygen in order for the blood to deliver oxygen to all parts of the body. We let this happen by breathing in oxygen and breathing out carbon dioxide.
There are many important organs in respiratory system, but let's start of at the mouth. We breathe in oxygen it travels down to the pharynx which just a scientific term for your throat. The oxygen then travel to the larynx which is below the pharynx is just your vocal cords. After this the oxygen travels to the trachea where the air splits off in to two other tubes,then the air travels through a organ called the bronchus[(bronchi)plural] which then officially goes to the lungs. The lungs are a vital organ in the body.There are 3 lobes in the right lung and 2 lobes in the left lung.
The respiratory system interacts with the circulatory system because the heart pumps blood through the lungs, the lungs then oxygenate the blood and excrete carbon dioxide. Also it interacts with the skeletal system since he ribs protect the lungs from any damage. A final example is how it interacts with the muscular system by eliminating carbon dioxide from exercising muscles.
Interesting Facts-
The surface area of the lungs is roughly the same size as a tennis court.
The capillaries in the lungs would extend 1,600 kilometers if placed end to end.
We lose half a liter of water a day through breathing.


The excretory system is another important body system. Some of the functions include getting rid of waste, eliminating useless by-products excreted from cells, eradicates harmful chemical build-ups, and maintaining a steady, balanced chemical concentration.
The organs in the excretory system are the lung which take out carbon dioxide with the help of all the other respiratory system organs, the kidneys which remove metabolic wastes from the blood , large intestine which stores waste, small intestine which absorbes nutrients and lastly the gallbladder which stores bile.
The excretory system interacts with the respiratory because the lungs excrete carbon dioxide. It also interacts with the circulatory system since the blood that travels through the body also goes to the kidneys. One last interaction is how it interacts with the integumentary system while sweating.
Interesting Facts-
Most people, on average, would breath about 6286920 times in their lifetime.
The human intestine is usually 27 feet long and 10 inches. (8.5 meters long)
The average person poops about 305 pounds a year.
The nervous system allows us to perceive, comprehend, and respond to the world around us. The nervous system also operates the body’s essential functions, such as breathing and digestion.
The organs of the nervous system is the brain which is the control center of the system, the spinal cord which is a long tubular bundle of nervous tissue that extends from the brain to the pelvis. Also, there are nerves which are bundles of fiber that transmit sensations to the brain or spinal cord, and neurons which is a special cell that transmits nerve impulses.
The nervous system interacts with the skeletal system because the spinal cord is protected by the vertebrae. Also it interacts with the muscular system because the brain controls all of the muscles. One last interaction is that it interacts with the digestive because it can be influenced by the nervous system.
Interesting Facts-
There are more nerve cells in the human brain than there are stars in the Milky Way.
If we lined up all the neurons in our body it would be around 600 miles long.
There are 100 billion neurons in your brain alone.
There is primarily one main function which then branches off into other functions. The immune system mainly tries keep away diseases and if they do enter the body, to get rid of the disease.
There are many organs in thee immune system. some of the major organs is the bone marrow which creates blood, the spleen which contains specialized T-cells. Also there's the lymph nodes which filters lymph and the thymus which directs the maturation of T-cells.
The immune system interacts with the lymphatic system because both systems share the spleen. Also, it interacts with skeletal system because bone marrow is made in the bones. A last example would be how the immune system interacts with the integumentary system because the skin is the fist defense against bacteria and any other diseases.
Interesting Facts-
Getting under 5 hours of sleep a night has been shown to greatly depress immune function in your body.
Studies show that people who lack humor in their lives tend to have less protective immune responses.
In your blood, there are around 50 billion white cells whose only interest is to keep your body's natural defenses in good condition, so don't worry if you lose 5 billion when you give blood - you still have a few left.
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