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Respiratory System

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Respiratory System Mrs. Halkuff Anatomy & Physiology Respiratory System Includes Nose, pharynx, larynx, trachea, bronchi, & lungs Nose: External; oxygen enters the ... – PowerPoint PPT presentation

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Title: Respiratory System


1
Respiratory System
  • Mrs. Halkuff
  • Anatomy Physiology

2
Respiratory System Includes
  • Nose, pharynx, larynx, trachea, bronchi, lungs
  • Nose External oxygen enters the body.
  • Pharynx Serves as a passageway for food AND
    air. (Throat)
  • Larynx Voicebox

3
Respiratory System Includes
  • Trachea Windpipe Leads oxygen to lungs.
  • Bronchi Division of the trachea Attaches to
    lungs.
  • Lungs Large respiratory organs Run from the
    clavicles to the diaphragm
  • Alveoli Air sacs in the lungs.

4
External Respiration
  • External Respiration External air is drawn into
    the lungs to supply oxygen and used air is
    expelled from the lungs to remove CO2.

5
Internal Respiration
  • Gas exchange between blood tissue (CO2 is
    removed from blood replaced with O2).

6
Mechanics of Breathing
  • Inspiration Air flow into the lungs (inhaling)
  • Expiration Air leaving the lungs (exhaling)

7
Inspiration
  • Intercostal muscles contract
  • Sternum ribs moves upward outwards
  • Diaphragm flattens
  • Increase volume of the thoracic cavity

8
Expiration
  • Intercostal muscles relax
  • Sternum ribs move downward inward.
  • Diaphragm relaxes forming a bell shape.
  • Volume in thoracic cavity decreases.

9
Respiratory Volume Capacity
  • Tidal Volume The amount of oxygen taken in with
    a regular breath. (Sitting in class)
  • Inspiratory Reserve Volume Oxygen that can be
    taken in forcibly over the tidal volume. (Before
    blowing up balloon)
  • Expiratory Reserve Volume The amount of oxygen
    that can be forcibly exhaled after a tidal
    expiration. (While blowing up balloon)
  • Vital Capacity Total amount of exchangeable
    oxygen.
  • TV IRV ERV VC

10
Voice Production
  • Relies on
  • Respiration
  • Phonation
  • Resonation
  • When we speak we place more emphasis on our
    inhalation muscles and speak long on our exhaled
    air.
  • Too much pressure or too little pressure can
    cause the voice to sound strained.

11
Disorders
  • Emphysema Alveoli enlarge and lungs lose their
    elasticity. Difficult to exhale.
  • Bronchitis Respiratory passages fill with
    excessive amounts of mucus.
  • Lung Cancer Cancer usually caused by smoking.
  • Asthma Difficulty breathing usually caused by
    allergies, exercise, or anxiety.
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