In 2015 Illinois will again process all appointment renewals electronically through the National Insurance Producer Registry (NIPR). 1  Appointment renewal date is November 1, 2015. 2  Appointment renewals will be electronically processed through NIPR.
myofibril - one of many contractile filaments that make up a striated muscle fiber. myofibrilla, sarcostyle. sarcoplasm - the cytoplasm of a striated muscle fiber. striated muscle cell, striated muscle fiber - an elongated contractile cell in striated muscle tissue.
Muscle cells, ensheathed by endomysium, consist of many fibrils (or myofibrils), and these myofibrils are made up of long protein molecules called myofilaments. There are two types of myofilaments in myofibrils: thick myofilaments and thin myofilaments. Source: Wikipedia Muscle contraction Source: Hopkins (2005). - Because skeletal muscle is voluntary muscle, contraction requires a nervous impulse. So, step 1 in contraction is when the impulse is transferred from a neuron to the SARCOLEMMA of a muscle cell. 2 - The impulse travels along the SARCOLEMMA and down the T-TUBULES.