Lectures

Respiratory System

by Geoffrey Meyer, PhD
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    In this lecture, you are going to learn how the air we breathe into our lungs is first warmed, moistened, then cleaned before it finally makes its way down to the lung, a huge interface between blood and air and we will look at the structures whereby gaseous products can be exchanged with the blood. We will also look at some of the structures that help us to speak and also smell. Well, I hope you take away a lot of knowledge from this lecture. It is important you understand what respiratory epithelium is and what the functions of the conchae in the nasal cavity are. And also we will have to look at the very specialized epithelium, which helps us to smell. The vocal cords in the larynx and the epiglottis are very important structures. And then it is important you understand the structures of all the airways that take the air from our nasal cavity all the way down to the lungs for exchange and when we look at those airways it is important you know the difference between a bronchus, a bronchiole and then the small bronchioles within the lungs that enables the transport of gaseous products from the air into the blood stream. Then it is important that you understand the components of the alveolar wall, that interface where this transfer occurs. And there are number of cells that make up that interface. And then lastly it is important for you to understand the blood supply to the lung. Well, as I indicated in the start of this lecture, the lung has a number of different structures that perform very important functions. It is important to clean, warm and moisten the air before it passes down into our lungs. It is important to understand gas exchange...

    About the Lecture

    The lecture Respiratory System by Geoffrey Meyer, PhD is from the course Respiratory Histology. It contains the following chapters:

    • Respiratory System
    • Conducting portion
    • The nasal cavities
    • Olfactory mucosa & receptor
    • The larynx and the epiglottis
    • The trachea
    • The bronchi and bronchiole
    • Alveolus
    • Blood supply and lymphativ drainage of the pulmonary lobule

    Included Quiz Questions

    1. Oral cavity
    2. Nasal cavity
    3. Larynx
    4. Trachea
    5. Bronchioles
    1. ciliated, pseudostratified columnar epithelium
    2. ciliated, pseudostratified cuboidal epithelium
    3. ciliated, stratified squamous epithelium
    4. pseudostratified columnar epithelium
    5. pseudostratified cuboidal epithelium
    1. Supporting (or sustentacular) cells synthesise and secrete odorant-binding proteins (OBPs)
    2. Olfactory receptor cells have microvilli projecting from their surfaces to bind odorant binding proteins (OBPs)
    3. Olfactory receptor cells have several dendritic processes projecting from their surfaces to bind odorant binding proteins (OBP)
    4. An olfactory receptor cell has several axons that form the olfactory nerve
    5. Supporting (or sustentacular) cells are stem cells that can give rise to olfactory receptor cells
    1. contains 16 to 20 rings of hyaline cartilage
    2. contains 10 to 16 rings of hyaline cartilage
    3. contains 16 to 20 rings of elastic cartilage
    4. is lined by pseudostratified cuboidal epithelium
    5. is located posterior to the oesophagus
    1. one terminal bronchiole and all the respiratory bronchioles branching from it
    2. one terminal bronchus and all the respiratory bronchi branching from it
    3. one respiratory bronchiole and all the terminal bronchioles branching from it
    4. one respiratory bronchiole and all the alveolar ducts branching from it
    5. consists of one terminal bronchiole and all the alveolar ducts branching from it
    1. terminal bronchioles to respiratory bronchioles to alveolar ducts to alveolar sacs
    2. terminal bronchioles to respiratory bronchioles to alveolar sacs to alveolar ducts
    3. respiratory bronchioles to terminal bronchioles to alveolar ducts to alveolar sacs
    4. respiratory bronchioles to terminal bronchioles to alveolar sacs to alveolar ducts
    5. terminal bronchioles to alveolar ducts to respiratory bronchioles to alveolar sacs
    1. type II cells
    2. Clara cells
    3. type I cells
    4. macrophages
    5. brush cells

    Author of lecture Respiratory System

     Geoffrey Meyer, PhD

    Geoffrey Meyer, PhD


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    Thanks
    By Ahoud M. on 06. May 2017 for Respiratory System

    Slowly makes it the best, because I'm a non-english speaker , I recommended non-english speakers

     
    clear and concise, effective explanation
    By Ariadna M. on 17. April 2017 for Respiratory System

    Very detailed and patiently explained. Allowed me to take notes of the whole video! I have appreciated as well the fact that histological sections are analyzed.