11. So-called glottalized vowels and other sonorants use the more common pulmonic egressive airstream mechanism. 12. Most languages have only pulmonic consonants. 13. The lung pistons are used to initiate a pulmonic airstream ( found in all human languages ). 14. However, the series in Taa is characterized by pulmonic " ingressive " nasal airflow. 15. The majority of sounds in most languages, such as vowels, are both pulmonic and egressive. 16. In interjections, but not in normal words, pulmonic ingressive vowels or words occur on all continents. 17. The velum is lowered so as to direct pulmonic airflow through the nasal cavity during the lingual initiation. 18. Pulmonic consonants make up the majority of consonants in the IPA, as well as in human language.19. Besides being motivated phonetically, this has the benefit of better illustrating the parallels between clicks and pulmonic consonants. 20. The increased blood volume in the right ventricle causes the pulmonic valve to stay open longer during ventricular systole.
