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The respiratory system (or ventilatory system) is the biological system of an organism that introduces respiratory gases to the interior an...
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Excretory systems regulate the chemical composition of body fluids by removing metabolic wastes and retaining the proper amounts of water...
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Peripheral Nervous System The Peripheral Nervous System (PNS)contains only nerves and connects the brain and spinal cord (CNS) to the ...
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The Human Excretory System The urinary system is made-up of the kidneys, ureters, bladder, and urethra. The nephron, an evolutionary m...
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MY TOPIC IS ABOUT BIOLOGY This blog I'll post biology topic. So if you don't understand some topic about biology you can open a... -
Endocrine System Introduction The endocrine system is made up of glands that produce and secrete hormones, chemical substances produce...
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Coronary Arteries Because the heart is composed primarily of cardiac muscle tissue that continuously contracts and relaxes, it must ...
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Meiosis vs Mitosis Cell division and reproduction can occur in two ways - mitosis and meiosis. Mitosis is a process of cell duplication...
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The Neuron Nervous tissue is composed of two main cell types: neurons and glial cells. Neurons transmit nerve messages. Glial cells are ...
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The circulatory system is an organ system that passes nutrients (such as amino acids, electrolytes and lymph), gases, hormones, blood ce...
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