Airway Clearance. Respiratory health depends on consistent clearance of airway secretions. Normal airway clearance is accomplished by two important mechanisms: the mucociliary clearance (MCC) system and the ability to cough. Impaired MCC is linked to poor lung function in a broad range of diseases and disabilities.
The xylem and phloem carry water and nutrients throughout a plant while the veins and arteries carry blood in a body. The xylem and phloem transport things up and down and veins and arteries carry blood to and from the heart.
1 Xylem-Xylem conducts water from the roots up to the leaves where it is used for photosynthesis. 2  The xylem and phloem tissues are found together in all parts of a plant to form vascular bundles. 3  These vascular bundles are visible in leaves as veins.