Respiratory System I

Histology 2016-2017
Department of Anatomy &Histology: Dr.Rajaa Ali
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Respiratory System I
Chapter Outline:
Overview of Respiratory System:
Nasal Cavity:
• Vestibule of the Nasal Cavity.
• Respiratory Region of the Nasal Cavity .
• Olfactory Region of the Nasal Cavity .
• Paranasal Sinuses .
Pharynx.
Larynx.
Trachea .
• Mucosa.
• Submucosa.
• Fibrocartiligenous coat.
• Advantitia.
Bronchi.
Bronchioles.
Bronchiolar Structure .
Aleveoli. .
Blood Supply .
Lymphatic Vessels .
Nerves .
Pleura
Learning Objectives:
After studying this chapter, you should be
able to:
Locate and describe the organs of the respiratory system.
Describe the functions of the respiratory structures.
Overveiw of Respiratory System: ( fig. 1)
? T e structures which are responsible for the inhalation of air, exchange of gases between the air and blood and exhalation of carbon dioxide constitute the respiratory system.
? Apart from respiration, this system is also responsible for olfaction and sound production.
? The respiratory system consists of two parts—a conducting part (which carries air) and a respiratory part (where gas exchange takes place).
? The conducting part consists of nasal cavity, paranasal sinuses, nasopharynx, larynx, trachea, bronchi, bronchioles and terminal bronchioles .