Download respiration

Objective 1
See diagram
Pathway:
Nostril—sinuses—
pharynx—larynx—
trachea—bronchi—
bronchioles—bronchiole
tube--alveoli
Objective 2: Protection
Mucus collects dust
and debris
Cilia propel mucus
Hairs 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 lobes
Right lung—three lobes
Pleura—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 grades
Conduct lung volume lab
Respiration Unit
Day 3
"Virtue herself is her
own fairest reward."
-Silius Italicus, Punica
Today’s Agenda
Look over air flow
sequence
Notes on objective 5-9
Lung 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
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
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 amount
Residual volume – air that
remains in lungs after
exhale.
Obj. 9 Lung Volumes
Inspiratory volume – amount
that can be forcefully inhaled
Expiratory reserve – amount
of forced exhale
Lung Volume Lab:
Respiration Unit: Day 4
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 Agenda
Notes on objectives 10-13
Respiration video
Practice questions
Obj. 10 Composition of
Atmospheric and Alveolar Air
Atomosphere Alveoli
Oxygen 160 mmHg
104 mmHg
Carbon
Dioxide
40 mmHg
0.3 mmHg
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
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 Notes
Practice matching symptom &
disorder
Homeostatic 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 breathing
Apnea = to stop breathing
Hyperpnea = excess
breathing due to exercise
and increased need.
Dyspnea = labored breathing
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.
Disorders
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.