The gigabyte (/ËÉ¡ÉªÉ¡ÉbaÉªt/ GIG-É-byt or /ËdÊÉªÉ¡ÉbaÉªt/) is a multiple of the unit byte for digital information. The prefix giga means 109 in the International System of Units (SI). Therefore, one gigabyte is 1000000000bytes. The unit symbol for the gigabyte is GB. This definition is used in all contexts of science, engineering, business, and many areas of computing, including hard drive, solid state drive, and tape capacities, as well as data transmission speeds.
The regulation of K+ distribution between the intracellular and extracellular space is referred to as internal K+ balance. The most important factors regulating this movement under normal conditions are insulin and catecholamines (1).
The distinctive characteristics of neurotransmitters, compared to other signaling molecules, are made clearer by comparison with the actions of the hormones secreted by the endocrine system. Hormones typically influence target cells far removed from the hormone-secreting cell (see Chapter 8).he subsequent binding of neurotransmitters to specific receptors on postsynaptic neurons (or other classes of target cells) transiently changes the electrical properties of the target cells, leading to an enormous variety of postsynaptic effects (see Chapters 7 and 8).