There are two kinds of neurotransmitters â INHIBITORY and EXCITATORY. Excitatory neurotransmitters are not necessarily exciting â they are what stimulate the brain. Those that calm the brain and help create balance are called inhibitory.here are two kinds of neurotransmitters â INHIBITORY and EXCITATORY. Excitatory neurotransmitters are not necessarily exciting â they are what stimulate the brain. Those that calm the brain and help create balance are called inhibitory.
The largest desert in the world is the interior of Antarctica. This has an area of about 14,000,000 km2 (5,400,000 sq mi). Rainfall in the Antarctic interior is extremely low, down to 20 millimeters (0.8 in) per year. This is partially because it is so cold that all liquid water quickly freezes solid and joins the ice pack.
One of the most famous deserts in the world is the Sahara (meaning 'greatest desert' in Arabic) and it is in fact the biggest classical desert in the world, apart from the above mentioned Antarctic and Arctic deserts.There is also a difference in types of deserts.he Sonoran desert is one of the largest and hottest deserts in the Americas and it covers the southeast of California and the southwest of Arizona in the US, and the northhwest Mexican states of Sonora, Baja California, and Baja California Sur. To the north of this 'low desert' is the 'high desert' Mojave.