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Bronchi help transport air to and from the lungs; they send oxygen to the lungs and allow carbon dioxide to exit the lungs. The bronchi are a part of the respiratory tract that act as an extension of the windpipe. More »

www.reference.com Science Human Anatomy

Humans need a respiratory system because it is made up of organs that allow them to breathe. Breathing delivers oxygen to the body and takes away carbon dioxide. Every cell in the body needs oxygen to obtain energy from ... More »

www.reference.com Science Human Anatomy

Bronchi are the transition structures that air travels through between the right and left main bronchus, and the very small bronchioles. The air first travels from the mouth or nose through the larynx and trachea, and th... More »

www.reference.com Science Human Anatomy Organs
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The process in the body that produces carbon dioxide consists of air being taken into the lungs, known as inspiration or inhalation. The air is then taken back out, known as expiration or exhalation. More »

www.reference.com Science Human Anatomy

The respiratory system is made up of the lungs, trachea, bronchi and diaphragm. These organs help people to breathe. Humans need to breathe to deliver oxygen to the body and rid the body of carbon dioxide, a waste gas th... More »

www.reference.com Science Human Anatomy

The thoracic cavity contains part of the esophagus, the thymus, the thoracic duct, the trachea, the lungs and bronchi. It also contains the heart and great vessels, which include the left subclavian artery, the right bra... More »

www.reference.com Science Human Anatomy

The blood transports oxygen, carbon dioxide, nutrients, water, hormones, waste substances and heat. The waste substances are moved to the liver and kidneys, which remove toxins from the blood. Urea is moved from the live... More »

www.reference.com Science Human Anatomy