FBCC Lab 5 THE RESPIRATORY SYSTEM 1

FBCC Lab 5 THE RESPIRATORY SYSTEM 1 - Lab 5 The Respiratory...

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Click to edit Master subtitle style 10/30/10 Lab # 5 The Respiratory System 1
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 10/30/10 Functions of Respiratory System 1- O2 and CO2 exchange between blood  and air 2- Speech and other vocalizations (laughing,  crying) 3- It provides the sense of smell 4- It helps to control the pH of body fluids by  eliminating CO2 5- It helps to regulate blood pressure by synthesis of  a vaso-constrictor called angiotensin II 6- Breathing creates pressure gradients between  thorax and abdomen that promote the flow of lymph  and venous blood 7- Breath-holding helps expel abdominal contents  during urination, defecation, and childbirth
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 10/30/10 Principal Organs of the Respiratory System Trachea Nos e Pharyn x Laryn x Lun gs Bronch i
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 10/30/10 The Nasal Cavity Nasal conchae: Meatuses : Superior Middle Inferio r Superio r Midd le Inferio r Vestibule Functions of the nose 1- It warms, cleanses, and humidifies inhaled  air 2- It detects odors in the airstream 3- It serves as a resonating chamber that  amplifies the voice Posterior nasal aperture The  respiratory epithelium  lines the rest of nasal cavity except vestibule. It is a  ciliated pseudostratified columnar  epithelium with goblet cells
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 10/30/10  Nasopharynx  Oropharynx  Laryngopharynx Pharyngeal tonsil Auditory tube Palatine tonsil (posterior to nasal apertures and  above soft palate) (space between soft palate and  epiglottis) (from the epiglottis to the cricoid cartilage) The Pharynx
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FBCC Lab 5 THE RESPIRATORY SYSTEM 1 - Lab 5 The Respiratory...

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