Definition is a rhetorical mode that can be used in something smaller or shorter than a full paper. You can use extended definition for several paragraphs only in a paper of much greater length. You also can add to a paper a one-paragraph definition--like a brief encyclopedia definition.
Depending upon location, neural crest cells give rise to most of the peripheral nervous system, as well as various non-neural tissues, like craniofacial bone and cartilage, the thymus and parathyroid glands, and the cardiac outflow tract â in short, all of the tissues that are affected in DiGeorge syndrome.
However, the relationship between digoxin toxicity and the serum digoxin level is complex. Clinical toxicity results from the interactions between digitalis, various electrolyte abnormalities, and their combined effect on the sodium-potassium adenosine triphosphatase (Na+/K+ ATP ase) pump. Infants and children taking digoxin tolerate higher doses and plasma levels.