{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Resp - BIO 212 Anatomy Physiology II Unit 5 Respiratory...

Info icon This preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
BIO 212 Anatomy & Physiology II Kaplan SP 2010 Unit 5: Respiratory System A. General Information 1. Anatomical Divisions a. Upper respiratory system (nose and pharynx) b. Lower respiratory system (larynx, trachea, bronchi, lungs) c. three major regions 1. Nasopharyngeal: ciliated columnar epithelium with globlet cells. (vascular mucous epithelium made with columnar cells that have cilia. i. anterior nares to larynx ii. vascular mucous epithelium iii. ciliated columnar iv. goblet cells v. functions 1. filters particulates 2. relative humidity change – adjust humidity 3. changes/ adjust temperature 2. tracheobronchial: ciliated epithelium with globlet cells; bifurcation 23 generations. i. area between larynx and alveoli ii. trachea, bronchi, & bronchioles iii. ciliated epithelium iv. goblet cells & mucus secreting cells v. thin layer of mucus over surface of tubes 1. mucus terminates at film covering alveoli vi. functions 1. transport or conduct air from oral cavity to lungs & back 2. branching pattern of airway is important in deposition a. decreasing in diameter as they divide b. X sec area increases as bifurcations increase 3. Pulmonary: 100’s of alveoli, blood/ lymph vessels; supportive tissue, nerves i. primary location of gas exchange ii. 3-4 orders bronchioles iii. several orders alveolar ducts iv. several alveolar sacs v. hundreds of alveoli vi. blood & lymph vessels vii. supportive tissue viii. nerves 2. Physiological Divisions a. Conducting Cavities and tubes outside and with in lungs 1
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Filter/ warm/ adjust humidity and transport. Nose, pharynx, larynx, trachea, bronchi b. Respiratory Tissues with in lungs Gas exchange Alveoli – main site of gas exchange (resp bronchioles, alveolar ducts, alveolar sacs) 3. Over 40 cell types in Respiratory System a. In general 1. 17 types of epithelium 2. 9 types of unspecified CT 3. 2 types of bone & cartilage 4. 2 distinct types of muscle cells 5. 7 cell types related to blood vessels 6. 5 types associated with pleural or neuronal tissue b. Those unique to the respiratory tract 1. ciliated bronchial epithelium 2. non-ciliated bronchial epithelium (Clara cells) 3. Type I (squamous alveolar) pneumocytes – gas exchange 4. Type II (great alveolar) pneumocytes – surfactant Surfactant – allows re-inflating. Decreased surface tension (cohesion/ adhesion of water) 5. alveolar macrophages (ø) c. In addition, 3 other cell types are of special interest & very susceptible to injury 1. endothelial cells* 2. interstitial cells* (fibrocytes, fibroblasts)--greatest % 3. Lining cells of trachea & bronchi*--smallest %. Most susceptible to injury. B. Nose 1. External portion resonance for sound. a. Bone, hyaline cartilage, muscle, skin b. Lined by mucous membrane c. Cartilage Septal: anterior nasal septum Lateral: inferior to nasal bones Alar: sides of nostrils d. External nares (nostrils) e. Functions 2. Internal portion a. Nasal cavity b. Nasal septum c. Conchae extend from lateral walls (superior, medial, and inferior) d. Olfactory epithelium C. Pharynx 2
Image of page 2
1.
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern