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Breathing is essential to human survival, as it gives us the necessary oxygen we need to live. Yet, the act of respiration is an involuntary process, something many people don't …
Composed of the heart, blood vessels, and blood, the circulatory system delivers oxygen and nutrients to every tissue in the body. At the center of this incredibly complex system …
Much like the nervous system, the endocrine system relays important communication signals throughout the body. The endocrine system uses chemical signals, known as hormones, which …
The skeletal and muscular systems not only allow us to move and stand tall, but they are also involved in protecting the body, allowing it to grow, and performing subconscious …