The Golgi organ (also called Golgi tendon organ, GTO, tendon organ, neurotendinous organ or neurotendinous spindle) senses changes in muscle tension.he tendon organ is a stretch receptor that signals the force developed by the muscle. The sensory endings of the Ib afferent are entwined amongst the musculotendinous strands of 10 to 20 motor units.
1 A sequence is a set of numbers, called terms, arranged in some particular order. 2  An arithmetic sequence is a sequence with the difference between two consecutive terms constant. 3  The difference is called the common difference. 4  A geometric sequence is a sequence with the ratio between two consecutive terms constant.
An arithmetic series is the sum of the terms of an arithmetic sequence. A geometric series is the sum of the terms of a geometric sequence. There are other types of series, but you're unlikely to work with them much until you're in calculus. For now, you'll probably mostly work with these two. This page explains and illustrates how to work with arithmetic series.