https://padlet.com/ew10024477/2101dc7m4ifk3xzw en-us 2023-04-12 13:02:25 UTC 2025-11-04 10:34:10 UTC hello@padlet.com ew10024477 https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551595169 The alveoli resemble a bunch of grapes. An adult lung contains approximately 500 million alveoli. They are made of one layer of squamous epithelial tissue and contain a rich network of blood capillaries. ]]> 2023-04-12 13:08:53 UTC https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551595169 ew10024477 https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551596278 The trachea divides into two bronchi near the center of the chest, a right bronchus and a left bronchus. ]]> 2023-04-12 13:09:49 UTC https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551596278 ew10024477 https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551597588 In the lungs, the bronchi continue to divide into the smallest branches, called bronchioles. ]]> 2023-04-12 13:10:47 UTC https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551597588 ew10024477 https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551599433 The cells then use the oxygen and nutrients to produce energy, water and carbon dioxide. ]]> 2023-04-12 13:12:19 UTC https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551599433 ew10024477 https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551601927 Tiny, hair-like structures, called cilia, filter inhaled air to trap dust and other particles. The cilia then help move the mucous layer that lines the airways to push trapped particles toward the esophagus, where they can be swallowed. ]]> 2023-04-12 13:14:12 UTC https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551601927 ew10024477 https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551605888 The epiglottis, a special leaflike piece of cartilage, closes the opening into the larynx during swallowing. This prevents food and liquids from entering the respiratory tract. ]]> 2023-04-12 13:16:52 UTC https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551605888 ew10024477 https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551607425 When the diaphragm and intercostal muscles relax, the process of expiration (exhalation) occurs. ]]> 2023-04-12 13:18:05 UTC https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551607425 ew10024477 https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551609086 External Respiration is the exchange of oxygen and carbon dioxide between the lungs and bloodstream.]]> 2023-04-12 13:19:01 UTC https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551609086 ew10024477 https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551612694 Inspiration (inhalation) is the process of breathing in air. ]]> 2023-04-12 13:21:46 UTC https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551612694 ew10024477 https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551614680 Internal Respiration is the exchange of carbon dioxide and oxygen between the tissue cells and the bloodstream. ]]> 2023-04-12 13:23:19 UTC https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551614680 ew10024477 https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551620140 The larynx, or voice box, lies between the pharynx and trachea. It has nine layers of cartilage, is commonly called the Adam's Apple. The larynx contains two folds, called vocal cords. ]]> 2023-04-12 13:27:17 UTC https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551620140 ew10024477 https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551621427 The divisions of the bronchi and the alveoli are found in organs called lungs. ]]> 2023-04-12 13:28:16 UTC https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551621427 ew10024477 https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551632658 The nasal cavities are two hollow spaces. ]]> 2023-04-12 13:36:20 UTC https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551632658 ew10024477 https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551633626 A wall of cartilage.]]> 2023-04-12 13:36:59 UTC https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551633626 ew10024477 https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551638140 The nose has two openings, called nostrils or nares, through which air enters. ]]> 2023-04-12 13:40:17 UTC https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551638140 ew10024477 https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551641154 Throat, lies directly behind the nasal cavities. ]]> 2023-04-12 13:42:34 UTC https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551641154 ew10024477 https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551642077 A thin layer of tissue that covers the lungs and lines the interior wall of the chest cavity. It protects and cushions the lungs. This tissue secretes a small amount of fluid that acts as a lubricant, allowing the lungs to move smoothly in the chest cavity while breathing.]]> 2023-04-12 13:43:16 UTC https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551642077 ew10024477 https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551646598 The movement of oxygen from the outside environment to the cells within tissues, and the removal of carbon dioxide in the opposite direction that's to the environment.]]> 2023-04-12 13:46:24 UTC https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551646598 ew10024477 https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551662004 The respiratory system is a biological system consisting of specific organs and structures used for gas exchange in animals and plants. The anatomy and physiology that make this happen varies greatly, depending on the size of the organism, the environment in which it lives and its evolutionary history.

]]> 2023-04-12 13:56:03 UTC https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551662004 ew10024477 https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551721471 Your sinuses are four paired cavities (spaces) in your head. Narrow passages connect them. Sinuses make mucus that drains out of the passages in your nose.

]]> 2023-04-12 14:33:31 UTC https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551721471 ew10024477 https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551728561 The airway that leads from the larynx (voice box) to the bronchi (large airways that lead to the lungs).]]> 2023-04-12 14:38:37 UTC https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551728561 ew10024477 https://padlet.com/ew10024477/2101dc7m4ifk3xzw/wish/2551733545 Ventilation refers to the flow of air into and out of the alveoli.

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