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Kerena Belony

on 28 January 2014

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Skeletal System

Circulatory System
Respiratory System
Muscular System
Digestive System
Your body has bones for 2 purposes: To produce blood and to join together with your muscles to help you move. Your bones are hard on the outside, but the inside has a different texture. If you were to take a look inside, you would see something called marrow. Marrow is a soft material inside the bones that makes your blood cells.
Your skeletal system consists of many bones as labeled in the diagram above. It also includes cartilage, ligaments, joints, and tendons. Cartilage is a rubbery, flexible substance that is only in your ears, nose, and trachea. Ligaments and tendons are similar except tendons connects bones, and ligaments connect bones and tissues at the joints. Joints are where 2 or more bones join together.
Your bones need someone to work with. They cannot work alone. That's where your muscular system comes along. Bones and muscles join to keep your body moving. Your immune system also works with the skeletal system because the blood cells produced in the marrow are used to help the immune system with it's job.
By Kerena Belony
Did You Know?
52 of the 206 bones inthe skeletal system make up both of our feet.
The largest bone is the pelvis. It is 6 bones tightly compacted together.
The 3 types of muscles that you have include cardiac, smooth, and skeletal. The skeletal muscles are attached to your skeleton and move intentionally or by reflex. The cardiac muscles transport blood to your heart so that it can be pumped into your lungs. The smooth muscles join your intestines to move food through your digestive tract. They also help circulate blood through the circulatory system.
After death, cartilage rots faster. That's why dead skulls don't have ears or a nose.
Just like the skeletal system, the muscular system cannot work alone. If we had muscles and no bones, we'd literally be blobs. That's were the skeletal system comes in. Our bones provide structure to our bodies so we can move with force. Our muscles also work with the nervous system. Our nerves send signals to our brain telling us if our muscles are being overextended.
Did You Know?
There are about 60 muscles in the face. It takes 20 to smile and over 40 to frown.
The biggest muscle in the body is the gluteus maximus. It pulls the leg backwards powerfully for walking, running, and other leg exercises.
The smallest muscle in the body is the stapedius, deep in the ear. It's 5 mm long and involves hearing.
The circulatory system is made of 4 organs: the heart, arteries, veins, and capillaries. the circulatory system's job is to send blood from the heart to all the other parts of the body and back. We need blood to live, so the circulatory system help make sure we have healthy blood in our bodies.
The heart is a pump that is used to transport blood throughout the body. The arteries carry oxygen rich blood from the heart throughout the body. Veins carry blood with the lack of oxygen to heart. Capillaries are the tissues that release waste into the blood cells, and exchange gases so that the waste rich blood can be brought back to the heart.
Did You Know?
The system of blood vessels measured in the human body is about 60,000 miles.
In one tiny drop of blood, there are about 5 million blood cells.
As mentioned before, no system can work alone. The circulatory system carries hormones that are included in muscular activity. The respiratory system provides oxygen that is neede for the blood.
Red blood cells take about 250,000 trips around the body before going back to the bone marrow, where it was born, to die.
The digestive system is made up of many organs. Each organ has its own responsibilities that help keep the system going. A piece of food would first go down your pharynx and your esophagus. Your pharynx starts from where your jaw and neck meet to the clavicle bone. The esophagus follows right below it. The food would then go to the stomach, into the small intestines and the large intestines. It would go into the rectum next and lastly, the anus. The liver takes the nutrients from your food to be used in the body. It also produces a liquid called bile which carries waste back into the intestines to leave your body. The pancreas produces chemicals that help break down food so it can be absorbed in the intestines. The gallbladder holds the bile produced in the liver until it's needed for certain foods.
Have you ever wondered how your food went down your body? Where does it go? What goes on in there? The answer all in the functions of the digestive system. The job of this system is to make sure your body gets the essential nutrients from your food, and the rest gets thrown out.
The muscular system helps with swallowing and moving the food through the organs. Muscles are needed with most things that involve movement. The skeletal system is also involved because teeth and jaws are used to break down food in the mouth.
Did You Know?
We make 1 to 3 pints of saliva per day.
An adult esophagus ranges from 10 to 14 inches long and about 1 inch in diameter.
The stomach's wall is lined with 3 layers of powerful muscles.
Excretory System
Nervous System
Immune System
The respiratory system plays an important role in the body. It imports oxygen into the body for cellular respiration and exports carbon dioxide to be used for photosynthesis.
If you took a breath of air, where would it go? First, oxygen would go to your pharynx and larynx. Then, it would go to your trachea and down your bronchial tubes. It goes into the lungs, let's out carbon dioxide, and the cycle repeats until the life of the person is done.
The circulatory system works with respiratory system by having the heart produce blood for the lungs. The muscular system also works with it because the diaphragm is a muscle and it plays a part in breathing.
Did You Know?
Nose hairs clean the air you breathe.
The breathing rate is faster in women and children than in men.
A person who is sleeping breaths about 12 to 15 times a day.
The excretory system is used to remove liquid and gaseous waste from the body. It could be done through sweat or urine. The organs of this system are kidneys, the bladder, skin, ureter, and urethra. The kidneys' jobs are to filter the blood. When blood is delivered to the kidneys, the waste becomes ready to be removed while the clean blood flows through the veins back to the heart. The skin carries out waste through sweat. When a person is sweating, secretion is happening. Secretion means the release of chemical substance from a cell or gland.
Did You Know?
The circulatory system works with this system because the kidneys clean the blood and take it back to the heart. The respiratory system also takes part in this because in respiration gaseous waste is breathed out.
400 ml of urine can be found in the bladder.
The bladder of a human is almost the same size of the average human brain.
Each day our bodies release round 1.5 quarts of urine.
The nervous system is the system that sends signals to your brain for every move you make. If you touched a hot iron, your nerves would send pain signals to your brain. The organs in this system are the brain, spinal cord, and nerves.
Did You Know?
The systems that work with this system are the skeletal and the muscular. The skeletal system protects the organs so they can still be in use. This system controls the muscular system by making the muscles move when they need to.
The immune system is the body's protection from viruses, bacteria, and other parasites that like to invade your body. The organs of this system are bone marrow, thymus, spleen, and lymph nodes. Spleen and lymph nodes filter the blood. Bone marrow creates blood cells.
There are more nerve cells in the brain than there are stars in the Milky Way.
The total surface area of the human brain is about 25,000 square cm.
The left side of the brain controls the right side of the body and the right side of the brain controls the left side of the body.
The circulatory system consists of blood vessels that are major pathways for the immune system. The muscular system is what moves the lymph throughout the body.
Did You Know
Studies show that people who lack humor in their lives tend to have less protective immune responses.
Dieting decreases natural killer cell functionality, weakening the immune system.
The number one way to boost the immune system is to reduce stress.
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