The respiratory system

The respiratory system - The respiratory system The...

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The respiratory system The respiratory system General Structures Upper Portion Ds Mouth Secondary structure Kldjf ;lkdsjf Larynx ;lkdsf Lkdfj Ds;lfkj Alveolar ducts and sacs Alveoli Functions Gas Excahnge Ventilation Protection Prevention of dehydration Keeps surfaces moist and protects against temp exchanges when inhaling air in the winter Defense Against microbes Traps them in secretions and allows you to get rid o them Sound production Allows you to speak Related to Brocas area: speech center Aids in regulation of pH of body fluid Aids in homeostasis Keeps ph in the blood at a regular level Divisions Conducting vs respiratory Conducting conducts in and out Respiratory says gas exchange Upper vs lower Fig 24-1 From the larynx down is the lower Upper is in the mouth and nasal sinuses etc Upper: Filtering air, warming air, and moistening the air Lower: gas exchange Most of the respiratory system is lined with respiratory epithelium Pseudostratified ciliated columnar (PSCC)
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Most of the cells are ciliated Dust and microbes are stuck on the surface of mucus and the beating cilia push it out of the respiratory system When you break your nose, mostly separating cartilage from the bone Nose is the primary entry system of respiratory system Breathing through the mouth dehydrates the tissues Air moves into and out of the respiratory system through external nares: nostrils One on either side b/c the nasal cavitiy is separated into 2 parts by nasal septum internal to nares is the vestibule has hairs which keeps out dirt etc stratified squamous non keratinized then nasal cavity lines with PSCC separated from the -????--- by the palate hard and soft palate palatine bones and palatine process of the maxilla form the hard palate soft because theres no bone run tongue along roof of mouth you feel hard palate further back is the soft palate end of the soft palate has a name: uvula: helps in swallowing as does the soft palate
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The respiratory system - The respiratory system The...

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