where are gases exchanged in the respiratory system
Gas exchange The gas exchanger in mammals is internalized to form lungs, as it is in most of the larger land animals.[citation needed] Gas exchange occurs in microscopic dead-end air-filled sacs called alveoli, where a very thin membrane (called the blood-air barrier) separates the blood in the alveolar capillaries (in the walls of the alveoli) from the alveolar air in the sacs.
Yuga There are four Yugas in one cycle:
Articulatory phonetics Consonants are produced with some form of restriction or closing in the vocal tract that hinders the airflow from the lungs. Consonants are classified according to where in the vocal tract the airflow has been restricted. This is also known as the place of articulation.
Time Earth is split up into a number of time zones. Most time zones are exactly one hour apart, and by convention compute their local time as an offset from GMT. For example, time zones at sea are based on GMT. In many locations (but not at sea) these offsets vary twice yearly due to daylight saving time transitions.