Respiratory System
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Respiratory System PowerPoint PPT Presentation

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Respiratory System. Objective 1. See diagram. Pathway:. Nostril—sinuses—pharynx—larynx—trachea—bronchi—bronchioles—bronchiole tube--alveoli. alveoli. Objective 2: Protection. Mucus collects dust and debris Cilia propel mucus Hairs filter air. Objective 3 Membrane Structure

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Respiratory System

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Respiratory system

Respiratory System

Objective 1

Objective 1

  • See diagram



  • Nostril—sinuses—pharynx—larynx—trachea—bronchi—bronchioles—bronchiole tube--alveoli

Respiratory system


Objective 2 protection

Objective 2: Protection

  • Mucus collects dust and debris

  • Cilia propel mucus

  • Hairs filter air

Respiratory system

Objective 3

Membrane Structure

Single cell layer thick

Covered with capillaries

Allows rapid exchange of gases

Objective 4 lungs pleura

Objective 4: Lungs/Pleura

  • Left Lung—two lobes

  • Right lung—three lobes

  • Pleura—thin lining on outside between lung and thoracic wall

Respiratory system


  • Locate the respiratory structures on the cat pluck.

  • Insert the pins in the structures.

Day 2

Day 2


Look over 6 weeks grades

Conduct lung volume lab

Respiration unit day 3

Respiration Unit Day 3

"Virtue herself is her own fairest reward."-Silius Italicus, Punica

Today s agenda

Today’s Agenda

  • Look over air flow sequence

  • Notes on objective 5-9

  • Lung volume Lab

Boyles law and breathing

Boyles Law and Breathing

  • Boyles Law: Pressure of a gas varies inversely with its volume. Inspiration lowers pressure in thorax, air flows inward. Expiration raises pressure, air moves out.

Objective 6 muscles of inspiration

Objective 6: Muscles of Inspiration

  • Inspiration occurs when the diaphragm and the intercostal muscles contract.

  • Expiration occurs more passively as these muscles relax and the lungs recoil.

Obj 7 partial vacuum

Obj. 7 Partial Vacuum

The intrapleural space (space between lung and wall of chest) always has a more negative pressure than the interpulmonary space (inside lungs).

Obj 7 partial vacuum1

Obj. 7 Partial Vacuum

The negative pressure must exist at all times to keep the lung in its proper shape and location to prevent lung collapse.

Obj 8 pulmonary ventilation

Obj. 8 Pulmonary Ventilation

  • Friction in airways causes resistance and results in more strenuous breathing.

  • Lung compliance depends on the elasticity of the lungs and chest flexibility.

Obj 8 pulmonary ventilation1

Obj. 8 Pulmonary Ventilation

  • Surface tension of alveolar fluid reduces alveoli size and could collapse alveoli.

Obj 9 lung volumes

Obj. 9 Lung Volumes

  • Tidal volume – normal inhale/exhale amount

  • Residual volume – air that remains in lungs after exhale.

Obj 9 lung volumes1

Obj. 9 Lung Volumes

  • Inspiratory volume – amount that can be forcefully inhaled

  • Expiratory reserve – amount of forced exhale

Lung volume lab

Lung Volume Lab:

Respiration unit day 4

Respiration Unit: Day 4

Today s agenda1

Today’s Agenda

  • Revisit Lung Volumes and gross anatomy.

    • Quiz

    • Complete Volumes worksheet using summary chart in notes

  • Notes on objectives 10-13

Today s agenda2

Today’s Agenda

  • Notes on objectives 10-13

  • Respiration video

  • Practice questions

Obj 10 composition of atmospheric and alveolar air

Obj. 10 Composition of Atmospheric and Alveolar Air

Obj 10

Obj. 10

  • Oxygen goes into blood @ alveoli

  • Oxygen moves from blood into cells at the capillary bed.

  • Oxygen is transported by hemoglobin.

  • Carbon dioxide is most likely transported at bicarbonate ion.

Obj 11

Obj. 11

  • Oxygen is transported in the blood attached to hemoglobin

HHb + O2 --> HbO2

Objective 12

Objective 12

  • Carbon dioxide is carried in the body primarily as bicarbonate ion.

CO2 +H2O -->H2CO3-->H + CO3-

Respiration unit day 6

Respiration Unit: Day 6

"The scientific theory I like best is that the rings of Saturn are composed entirely of lost airline luggage."-Mark Russell

Today s agenda3

Today’s Agenda

  • Complete Objective Notes

  • Practice matching symptom & disorder

  • Homeostatic Imbalances sheet

Obj 111

Obj. 11

  • Oxygen is transported in the blood attached to hemoglobin

HHb + O2 --> HbO2

Objective 121

Objective 12

  • Carbon dioxide is carried in the body primarily as bicarbonate ion.

CO2 +H2O -->H2CO3-->H + CO3-

Obj 13

Obj. 13

  • Respiration rates can be effected by emotions, pain, carbon dioxide levels and reflexes.

  • (see separate sheet for notes)

Respiratory system

Eupnea = Normal breathing

Apnea = to stop breathing

Hyperpnea = excess breathing due to exercise and increased need.

Dyspnea = labored breathing

Respiratory system


Disorders continued

Disorders Continued

  • Hypoxia= Chronic Oxygen deficiency

  • Bronchitis = respiratory passageways become clogged by elevated mucus production.

  • COPD = chronic obstructive pulmonary disorder resulting from the combination of chronic bronchitis and emphysema.



  • TB= tuberculosis-bacterial infection of lungs, airborne

  • Emphysema = bronchiole walls are damaged, difficulty in normal breathing causes barrel chest.

  • Lung cancer = excessive cell division of lung tissues, has been directly tied to smoking.

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