objective 1 see diagram pathway: nostril—sinuses— pharynx—larynx— trachea—bronchi—...
TRANSCRIPT
Objective 1
See diagram
Pathway:
Nostril—sinuses—pharynx—larynx—trachea—bronchi—bronchioles—bronchiole tube--alveoli
Objective 2: Protection
Mucus collects dust and debrisCilia propel mucusHairs filter air
Objective 3
Membrane Structure
Single cell layer thick
Covered with capillaries
Allows rapid exchange of gases
Objective 4: Lungs/Pleura
Left Lung—two lobesRight lung—three lobesPleura—thin lining on outside between lung and thoracic wall
Lab
Locate the respiratory structures on the cat pluck.Insert the pins in the structures.
Day 2
Agenda:Look over 6 weeks gradesConduct lung volume lab
Respiration Unit Day 3
"Virtue herself is her own fairest reward." -Silius Italicus, Punica
Today’s Agenda
Look over air flow sequenceNotes on objective 5-9Lung volume Lab
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 InspirationInspiration 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
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 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
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 Ventilation
Surface tension of alveolar fluid reduces alveoli size and could collapse alveoli.
Obj. 9 Lung Volumes
Tidal volume – normal inhale/exhale amountResidual volume – air that remains in lungs after exhale.
Obj. 9 Lung Volumes
Inspiratory volume – amount that can be forcefully inhaledExpiratory reserve – amount of forced exhale
Lung Volume Lab:
Respiration Unit: Day 4
Today’s Agenda
Revisit Lung Volumes and gross anatomy.QuizComplete Volumes worksheet using summary chart in notes
Notes on objectives 10-13
Today’s Agenda
Notes on objectives 10-13Respiration videoPractice questions
Obj. 10 Composition of Atmospheric and Alveolar Air
Atomosphere
Alveoli
Oxygen
160 mmHg 104 mmHg
CarbonDioxide
0.3 mmHg 40 mmHg
Obj. 10Oxygen goes into blood @ alveoliOxygen 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
Oxygen is transported in the blood attached to hemoglobin
Objective 12
Carbon dioxide is carried in the body primarily as bicarbonate ion.
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 Agenda
Complete Objective NotesPractice matching symptom & disorderHomeostatic Imbalances sheet
Obj. 11
Oxygen is transported in the blood attached to hemoglobin
Objective 12
Carbon dioxide is carried in the body primarily as bicarbonate ion.
Obj. 13
Respiration rates can be effected by emotions, pain, carbon dioxide levels and reflexes.(see separate sheet for notes)
Eupnea = Normal breathingApnea = to stop breathingHyperpnea = excess breathing due to exercise and increased need.
Dyspnea = labored breathing
Disorders ContinuedHypoxia= Chronic Oxygen deficiencyBronchitis = respiratory passageways become clogged by elevated mucus production.COPD = chronic obstructive pulmonary disorder resulting from the combination of chronic bronchitis and emphysema.
Disorders
TB= tuberculosis-bacterial infection of lungs, airborneEmphysema = 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.
