Histology ot the liver spleen pancreas good

Histology

1. By the name of Allah
Respiratory system

3. Respiration
•Gas exchange
•Oxygen supply and oxygen use
•CO2 excretion
•250ml/min O2
•200ml/min CO2

5. Respiration process
•Pulmonary ventilation
•Pulmonary diffusion
•Transport of gases
•Cellular respiration
•

7. Pulmonary ventilation
•Main respiratory organs
1.Upper respiratory organs
2. Lower respiratory organs (Helping
respiratory organs )
•Helping respiratory organs ( ribs , chest
muscles ,pluera and abdomenal
muscles)

9. Upper and lower respiratory tract
1.( nose , mouth , naso pharynx , larynx ,
trachia , branchis , bronchioles , terminal
bronchioles )
2. Structual and functional units such as :
bronchioles , alveolar duct , alveolar sac
and atrium

10. Functions of conducting air
passages
•Avoiding dry air
•Heat control
•Dust adhesion by cillias
•IgA
•Tonsil and adenoids immunologic reaction
•Avoiding the collapse of bronchi
•Cough reflex
•Sound production
•

13. Functional and structrual unit of
respiratory system
1.bronchioles →alveolar duct→ alveolar
sac →atrium →alveoli
2.Both lungs contain 200 millions of alveoli
with 0.5 mic diameter
3.Epithelial cells in alveoli
a.Type 1
b.Type 2 ( granular pneumocytes )

15. The respiratory membrane
•Sperates capillary blood from alveolar air
1.Thin layer
2.Epithelial layer
3.Basement membrane
4.Endothelial layer

18. Thanks for your attention
.