lecture 8 respiratory handouts.ppt - Respiratory system Dr...

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Respiratory system Dr. S. Glaser 22-1
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22-2 Cellular respiration all our body processes directly or indirectly require ATP ATP synthesis by mitochondria requires oxygen and produces carbon dioxide Cellular respiration requires us to intake oxygen, and eliminate carbon dioxide Cellular respiration produces the energy needed to run all bodily processes
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22-3 Breathing The respiratory system consists of a system of tubes that delivers air to alveoli in the lungs oxygen diffuses into the blood , and carbon dioxide diffuses out (following concentration gradients) The ____________________________________________ work together (cardiopulmonary system) to deliver oxygen to the tissues and remove carbon dioxide The respiratory system and the urinary system collaborate to regulate the body’s acid base balance
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Respiration has three meanings: 1. ___________________ of the lungs (breathing) 2. the exchange of gases between the air and blood, and between blood and the tissue fluid 3. the use of oxygen in cellular metabolism 22-4 From:
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22-5 Functions of Respiratory System O 2 and CO 2 exchange between blood and air Speech / vocalizations _____________ (in conjunction with the nervous system) Reduces the pH of body fluids by eliminating CO 2 affects blood pressure by synthesis of vasoconstrictor, angiotensin II breathing movements create pressure gradients between thorax and abdomen that promote the flow of lymph and venous blood breath-holding helps expel abdominal contents during urination, defecation, and childbirth (Valsalva maneuver)
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22-6 Principle divisions of the respiratory system ___________________________ of the respiratory system those passages that serve only for airflow (no gas exchange) nostrils through major bronchioles respiratory division consists of alveoli and other gas exchange regions upper respiratory tract – in head and neck- nose through larynx lower respiratory tract – organs of the thorax- trachea through lungs From:
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22-7 Air travels through the nose, pharynx, larynx, trachea, and bronchi into the lungs. Incoming air stops in the ___________________________ millions of thin-walled, microscopic air sacs surrounded by a mesh of capillaries Gas exchange with the blood (RBC’s and plasma) through the alveolar wall From: - body-in-motion/how-do- the-musculoskeletal-and- cardiorespiratory-systems- of-the-body-influence-and- respond-to- movement/respiratory- system/exchange-of- gases/ Gas exchange occurs in the respiratory division of lungs
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22-8 The Nose functions of the nose _______________________________________inhaled air detects odors serves as a resonating chamber that amplifies the voice facial part is shaped by bone and hyaline cartilage From:
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22-9 The Nose vestibule
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