Answer:
Mast cells and histamines
Explanation:
Mast cells release several chemicals like histamine, cytokines, and other compounds that dilate blood vessels in the affected area. During the inflammatory reaction, mast cells release substances such as histamine. Histamine is a vasodilator and dilates blood vessels and increases their permeability.
The increased permeability of vessels makes the tissue fluid leak from the vessel. The swelling in the area stimulates pain receptors. This is followed by the arrival of neutrophils and monocytes (which become macrophages) through the capillary wall and phagocytosis of pathogens.
Answer:
Explanation:
Jupiter's fifth moon, Io, is the most volcanically active body in the solar system. Plumes of sulfur spew upward as high as 190 miles. The surface of Io is splotched with lava lakes and floodplains of liquid rock.
Astronomers have mapped about 150 volcanoes on the moon, some of which blast lava 250 miles (400 km) out into space. There are volcanoes all over Io's surface, and as scientists perform observations they still occasionally see new hotspots pop up. For example, NASA's Juno spacecraft, which is currently orbiting Jupiter, found a possible new hotspot on Io on Dec. 16, 2017.(k r
