consists of specific organs responsible for supplying the blood with oxygen and expelling carbon dioxide
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Nose or nasal cavity
serves as the main entry / exit for air where it is warmed, filtered and humidified to get rid of foreign substances; it has two openings, the nostrils (or nares)
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Pharynx or throat
a muscular tube found behind the mouth and nasal cavity which serves as the passageway for air and food
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Larynx or voice box
it is formed by several cartilages whose function is to connect the pharynx and trachea and for the production of sound and speech
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Epiglottis
a flap of tissue that acts as a protective barrier for the lungs
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Trachea or Windpipe
made up of rings of cartilage making it flexible enough to keep the passageway open for air; Its cilia push mucus and dust particles and bacteria toward the throat
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Bronchioles
tinier branches of the main bronchi going to the air sacs
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Alveoli or air sacs
thin-walled bulbs referred to as the sites of respiration
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Lungs
main organs of the respiratory system which are large, elastic, spongy sacs
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Diaphragm
a dome-shaped muscle separating the chest from the abdomen that aids in respiration
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Pharynx or throat
muscular tube found behind the mouth and nasal cavity which serves as the passageway for air and food.
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Trachea or Windpipe
made up of rings of cartilage making it flexible enough to keep the passageway open for air; Its cilia push mucus and dust particles and bacteria toward the throat.
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Epiglottis
tissue that acts as a protective barrier for the lungs.
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Bronchi
two tubes that conducts air into the lungs: the left bronchus which is narrower, longer and less straight than the right bronchus.
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Lungs
main organs of the respiratory system which are large, elastic, spongy sacs.
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Bronchioles
tinier branches of the main bronchi going to the air sacs
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Nose or nasal cavity
serves as the main entry / exit for air where it is warmed, filtered and humidified to get rid of foreign substances; it has two openings, the nostrils (or nares)
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Alveoli or air sacs
thin-walled bulbs referred to as the sites of respiration
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pleura
thin membrane covering the lungs
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Cellular Respiration
process of using oxygen to break down sugar in food producing energy in cells and releasing carbon dioxide as a waste product.
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External Respiration
exchange of oxygen and carbon dioxide between the air and the blood within the lungs.
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Larynx or voice box
formed by several cartilages whose function is to connect the pharynx and trachea and for the production of sound and speech.
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Diaphragm
dome-shaped muscle separating the chest from the abdomen that aids in respiration
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Respiratory System
specific organs responsible for supplying the blood with oxygen and expelling carbon dioxide.
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Pulmonary Ventilation or Breathing -
inhaling or taking in oxygen, and exhaling or releasing carbon dioxide out of the lungs
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Medulla Oblongata
breathing center of the brain that regulates the breathing rate
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Internal Respiration
exchange of oxygen and carbon dioxide between the blood and the body cells.