Respiratory System Slides

General Organization and Functions of the Respiratory System. Respiratory System Functions. Upper Respiratory Tract. Nose and Nasal Cavity. Paranasal Sinuses. Pharynx. Lower Respiratory Tract. Larynx. Trachea. Bronchial Tree. Respiratory Bronchioles, Alveolar Ducts, and Alveoli. Lungs. Pleura and Pleural Cavities. Gross Anatomy of the Lungs. Development of the Respiratory System. Blood Supply To and From the Lungs. Lymphatic Drainage.

The respiratory system forms from the developing pharynx beginning at week 4. Primary bronchial buds appear later during week 4. Secondary bronchial buds branch from the primary bronchi during week 5 and grow into the surrounding mesoderm. By week 6, the tertiary bronchi of the left and right lungs have formed.

The connective tissue in the lung houses lymph nodes and lymph vessels.