1
, Respiratory System
Lungs
Air ways
Upper Lower Branched Pleura Alveoli
Airways
Nose Pharynx Larynx 300 million 70 m2
Conducting Respiratory
zone zone Type II
secretes
surfactant
Site Trachea Terminal Resp. bronchioles Alveolar sac
Alveoli -- +
Functions Air (conduct, warm, Gas exchange
moisten), Defencive + Phonation
2
, Respiratory
Functions Processes
General Others Internal External
Diffusion
(4)
Conducting, Regulation Surfactant * يصنغ Ventilation
respiratory (1)
bradykinin * يقهم مه وشاط Exchange Gas
zones
Acid حزارج (2) Transport
Serotonin
(3)
base PG
Ach. * يتخهص مه
Norepi.
* Angiotensin I ACE
Angiotensin II
3
, Mechanism of Respiration
Inspiration Expiration
Start: Tend to recoil Start: Distension
Lung
End: Distension End: Recoil
all all
Thoracic cavity
Dimensions Dimensions
IPP -6 -3
IAP -1 +1
Air moves in out
Respiratory Muscles
1. Diaphragm (75%)
Vertical Relaxation of inspiratory
Normal
2. External Intercostal: Diameter muscles
Transverse, AP
Accessory Muscles 1. Internal Intercostal
Deep (External )ػكــس
(Forced)
S ternomastoid
calenus
2. Abdominal Muscles
Vertical diameter
4
, Respiratory Pressures
Atmospheric Intra Alveolar Intra Pleural Transpulmonary Trans
(Barometric) (IAP) (IPP) = Transmural Thoracic
760 mmHg
(0 mmHg) أنظر انصفحت IAP-IPP IPP-Atmosph.
انقاديت
Pause Inspiration Expiration +4 -4
Importance Importance
760 759 761 Measure Compressing
(0) (-1) (+1) Lung elastic pressure
recoil
Distending
pressure of alveoli
5
, Respiratory System
Lungs
Air ways
Upper Lower Branched Pleura Alveoli
Airways
Nose Pharynx Larynx 300 million 70 m2
Conducting Respiratory
zone zone Type II
secretes
surfactant
Site Trachea Terminal Resp. bronchioles Alveolar sac
Alveoli -- +
Functions Air (conduct, warm, Gas exchange
moisten), Defencive + Phonation
2
, Respiratory
Functions Processes
General Others Internal External
Diffusion
(4)
Conducting, Regulation Surfactant * يصنغ Ventilation
respiratory (1)
bradykinin * يقهم مه وشاط Exchange Gas
zones
Acid حزارج (2) Transport
Serotonin
(3)
base PG
Ach. * يتخهص مه
Norepi.
* Angiotensin I ACE
Angiotensin II
3
, Mechanism of Respiration
Inspiration Expiration
Start: Tend to recoil Start: Distension
Lung
End: Distension End: Recoil
all all
Thoracic cavity
Dimensions Dimensions
IPP -6 -3
IAP -1 +1
Air moves in out
Respiratory Muscles
1. Diaphragm (75%)
Vertical Relaxation of inspiratory
Normal
2. External Intercostal: Diameter muscles
Transverse, AP
Accessory Muscles 1. Internal Intercostal
Deep (External )ػكــس
(Forced)
S ternomastoid
calenus
2. Abdominal Muscles
Vertical diameter
4
, Respiratory Pressures
Atmospheric Intra Alveolar Intra Pleural Transpulmonary Trans
(Barometric) (IAP) (IPP) = Transmural Thoracic
760 mmHg
(0 mmHg) أنظر انصفحت IAP-IPP IPP-Atmosph.
انقاديت
Pause Inspiration Expiration +4 -4
Importance Importance
760 759 761 Measure Compressing
(0) (-1) (+1) Lung elastic pressure
recoil
Distending
pressure of alveoli
5
