Muscle spindles cause two things to happen: 1) the muscle being stretched (agonist) contracts to prevent you from going too far too fast in that stretch; and 2) the opposing muscle force (antagonist) is inhibited (prevented from contracting) so that that muscle doesnât pull that stretch further.he muscle spindleâs reflex contraction of its associated muscle simultaneously causes the antagonist muscle group to relax, which is called reciprocal inhibition. The muscle spindle serves as an alert to the muscles; they are located in the muscle belly and sense muscle stretch.
âIt always seems impossible until its done.â. Nelson Mandela quotes (South African Statesman First democratically elected State President of South Africa (1994), 1993 Nobel Prize for Peace, b.1918)
Quick Answer. Nelson Mandela was imprisoned for 27 years because he was found guilty of conspiracy and sabotage to overthrow the government of South Africa, together with other eight National African Congress Leaders. He was sentenced to life imprisonment in 1964 and was released in 1990 after serving for 27 years in jail.