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Organisms (Multicellular Organisms (They are composed of... (Cells (Cells…
Organisms
Multicellular Organisms
Multicellular organisms are composed of multiple cells. Multicellular organisms rely on different types of cells to carry out the life processes. They have more working cells than a Unicellular Organism.
They are composed of...
Cells
Cells are the smallest units of the body and are the building blocks of life. The carry the out the life process Growth, Metabolism and reproduction. Each cell has a specific function in the human body.
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Organs
Multiple cells combined together to preform a special function in the human body. ex: Stomach, Heart, lungs...
Organ Systems
Organ systems are when multiple organs are combined together to create a system which are vital to the human body.
Digestive System
The food enters the mouth and is chewed down with the help of some chemicals. You swallow the food down your esophagus to your stomach. Muscles in your esophagus help move food down. Cells in the stomach release more chemicals that break the food more. The stomach relaxes and moves the food to the intestines, which absorbs nutrients and sends it to different parts of the body. The undigested residue passes down the anus as the waste
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Circulatory System
Main function is to move blood and lymph through the body. It transports oxygen and nutrients and removes wastes such as carbon dioxide. It also regulates body temperature and protects the body from diseases. It transports oxygen from the lungs to the body in two basic systems: Pulmonary Circulation - Takes the blood to the lungs to pick up oxygen. Systemic Circulation - Takes oxygenated blood throughout the body, it picks up nutrients, attacks diseases and gathers wastes for elimination
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Respiratory System
During the process cells diffuse CO2, this CO2 is then taken by the blood cells. The blood cells travel to the lungs by the circulatory system where the CO2 is exhaled out of the body.
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Bronchi: The wind pipe divides into 2 branches called bronchi. Bronchi leads to each lungs and divides in several small branches called bronchioles
Lungs/Alveoli: Lungs are sponge like sacs protected by flexible rib cages. Lungs have tiny air sacs called Alveoli, this is where the gas exchange goes on.
Nervous System
The nervous system consists of the brain, spinal cord, sensory organs, and all of the nerves that connect these organs with the rest of the body. These organs are responsible for the control and communication of the body. The brain and the Spinal Cord are known as the Central Nervous System (CNS), this is where information is read and makes decisions.
Brain: The brain, along with the spinal cord, comprises the body's central nervous system. This is the major control network for the body's functions and abilities, and enables conscious communication with our body
Spinal Cord: Like your brain, your spinal cord is part of your central nervous system. Its main function is to relay information about what's happening inside and outside your body to and from your brain. It also keeps your body balanced.
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Unicellular Organisms
Unicellular Organisms are a single celled organism which are able to carry out all the life functions by it self. Most Unicellular organisms are microscopic yet some are visible to the naked eye
Cellular Differentiation
Cellular differentiation occurs in many stages of development. Each cell changes its shape and size dramatically. It also develops new characteristics. The cell decides what kind of cell it wants to be. It is important because it decides whether a cell is a muticellular organisms
Specialized Cells
Specialized Cells are cells that have gone on to a specialize in being in a certain part of the body such as the skin cell. They do not replicate and simply die after there life cycle is over.