UGC NET Biology Q96

Question

Which of the following statements about muscular action are true ?
A. In a concentric action, when a muscle contracts, it tends to shorten and pull the two bony attachments closer together
B. In an eccentric action, a muscle is activated but is lengthened
C. In an eccentric action, external load helps the muscle to shorten
D. During an isometric action, the muscle is activated but the overall length of the muscle tendon unit does not change.