By contrast, postganglionic fibers in the parasympathetic division are cholinergic and use acetylcholine as a neurotransmitter. In the sympathetic nervous system, the postganglionic neurons of sweat glands release acetylcholine for the activation of muscarinic receptors.
The International Space Station (ISS) is made up of multiple materials. Lightweight metals, plastics, and carbon fibers make up the majority of the state. The International Space Station (ISS) is made up of multiple materials. Lightweight metals, plastics, and carbon fibers make up the majority of the state.
The ISS is the largest international scientific and technological endeavor ever undertaken. The ISS is a permanent laboratory in a realm where gravity, temperature, and pressure can be manipulated for a variety of scientific and engineering pursuits that are impossible in ground-based laboratories. The ISS is a test bed for the technologies for the future as we learn more about living and working in space.