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The Respiratory System:

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The Respiratory System: Structure and Function Overview of External & Internal Respiration Gross Anatomy of the Respiratory System Detailed Anatomy of the Upper ... – PowerPoint PPT presentation

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Title: The Respiratory System:


1
The Respiratory System
  • Structure and Function

2
Overview of External Internal Respiration
Describe the anatomy associated with each of
these functions.
3
Gross Anatomy of the Respiratory System
Describe the embryonic origin of the pharynx and
the respiratory system. What are the functions
of the respiratory system? What tissue helps
prevent the collapse of air passageways in the
trachea, bronchi, and bronchioles? Identify some
of these by name.
4
Detailed Anatomy of the Upper Airway
Describe the action that lowers the epiglottis
to protect the airway. How is this different
from the function of the superior vocal folds?
5
Bronchial Tree and Pleural Membranes
Name the epithelium that lines most of the
bronchial tree.
Name the epithelium of the pleural membranes.
Identify this space.
6
Mechanics of Breathing
Quiet exhalation is passive. Describe why air
leaves the lungs.
7
Microscopic Anatomy of Lung Lobule
Describe the trends with respect to tissue
organization (esp. the amount of smooth muscle
and cartilage, and the type of epithelium) as you
move into smaller branches of the bronchial tree.
8
The Respiratory Membrane
Describe the chemical nature of surfactant. What
is its function? Why are there fixed macrophages
in alveoli?
9
Factors that Affect the Rate of Diffusion Across
a Membrane
This application of Ficks Law involves one cell
membrane.
Describe all of the layers involved in the
diffusion of gasses across the respiratory
membrane.
10
Respiratory Centers in the CNS
Identify the type of muscle tissue in respiratory
muscles. Explain why breathing is normally
rhythmic and unconscious. Can these muscles be
voluntarily controlled? Explain how this is
possible.
11
Regulation of Breathing
How do chemical changes influence activity in the
respiratory centers of the Pons? other factors?
Describe the action of carbonic anhydrase in the
respiratory centers.
Pneumotaxic Ctr.
Apneustic Ctr.
Key stimulates inhibits
Inspiratory group
Expiratory group
to lower motor neurons of diaphragm and external
intercostals
to lower motor neurons of internal intercostals
and abdominal muscles
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