The Circulatory System
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Basics
Function:
The circulatory system is the transportation system for the body. It carries chemicals and more to points in the body. For example, it delivers oxygen, nutrients, and hormones as well as aids in the removal of carbon dioxide, ammonia, and more. The fluids also carry dissolved gasses and waste products for your cells.
There are 4 major organs in the skeletal system: Your heart, capillaries, arteries, and veins.
Organs:
HEART: The heart pumps blood throughout your whole body. It is located on the left side of your chest, protected by your rib cage, and made out of strong muscle tissue. It consists of four chambers that all pump and push blood throughout your body.
BLOOD VESSELS
ARTERIES: Arteries are tube like organs that carry oxygenated blood away from the heart and to the tissues with the exception of pulmonary arteries. They carry blood to the lungs so it can be oxygenated.
VEINS: Veins are similar to arteries. However, instead of carrying oxygenated blood away from the heart, they carry deoxygenated blood towards and back to the heart.
CAPILLARIES: Capillaries are extremely tiny blood vessels that form a connection between arteries and veins. They are also in assist in the transfer of oxygen, wastes, and nutrients in and out of your body.
Your blood vessels allow blood to be quickly transferred from one region to another as well as to and from the heart.
Interactions With Other Systems
The circulatory system works with and aids almost all body systems.
Respiratory System
The circulatory system aids the respiratory system by delivering oxygen to your cells and carrying dissolved carbon dioxide back to your lungs. In fact, the circulatory system is connected to all body systems so it can efficiently transport oxygen.
The circulatory system delivers nutrients from the digestive system to the rest of the body as well as hormones from the endocrine. In addition to that, every cell that needs oxygen needs access to the fluids of the circulatory system.
The circulatory system is like amazon because amazon:
The main function of the heart is to pump blood throughout and move it in and out of it's four chambers. Why does the heart have four chambers?
Digestive, Endocrine System, and More!
Analogy: The Circulatory System is like Amazon
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- transports all kinds of items to whoever needs them or has ordered the items. Just like how the circulatory transport oxygen, nutrients, hormones, and more to various cells and organs.
- constantly has items being shipped to and from the packaging centers. Like how blood is constantly being brought into and out of the heart.
Structure and Function: The Heart
The main function of the heart is to pump blood throughout and move it in and out of it's four chambers. Why does the heart have four chambers?
- Some animals have two chambered hearts, some have three, the human heart has four. Humans have four chambered hearts to allow the heart to perform four different functions. The right atrium receives blood from the vena cava (a large vein) and sends it into the right ventricle.
- The right ventricle sends the blood to the lungs to be oxygenated through different arteries. Though both of these chambers work together, both are also needed.
- The left atrium receives blood from the pulmonary veins and sends it to the left ventricle.
- The left ventricle sends blood to the rest of the body through arteries.
The structure of the heart (the fact that it has four chambers) allows "clean" blood to be delivered to the body and "dirty" blood to be sent to the lungs without mixing the two.
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