The Medulla Oblongata's General Functions. Whereas the pons is located in the upper part of the brainstem, the medulla oblongata is a structure located in the lower half of the brainstem. Just because the medulla oblongata is beneath the pons, doesn't mean it's any less significant. In fact, they often work in tandem on issues such as breathing.
Cirrus are detached clouds in the form of white, delicate filaments or white or mostly white patches or narrow bands. These clouds have a fibrous (hair-like) appearance, or a silky sheen, or both. Cirrus clouds are composed almost exclusively of ice crystals. These crystals are in general very small, a fact, which together with their sparseness, accounts for the semi-transparency of most cirrus clouds.
Cirrus clouds have actually been spotted as well! In addition to forming on Earth, cirrus clouds can form on planets like Mars, Saturn, Jupiter, Neptune and Uranus! Although a cirrus clouds appears to be very flat and wispy, the thickness of a cirrus cloud is actually about 1.5 km! How do cirrus clouds form? Cirrus clouds are formed at very high altitude. When air masses reach these heights, the temperature drops drastically. These cold temperatures cause the moisture in the air masses to condense and actually freeze into ice crystals. This occurs above 8000m. Masses of ice crystals are visible to the human eye as a cirrus cloud.