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.
Generally, the sum of the elements in a progression can be defined as a series. The sum of an arithmetic progression is known as an arithmetic series. Likewise, the sum of a geometric progression is known as a geometric series. More about Arithmetic Series. In an arithmetic series, the successive terms have a constant difference. Sn = a1 + a2 + a3 + a4 +â¯+ an = âni=1 ai ; where a2 = a1 + d, a3 = a2 + d, and so on.