Answer Happy

Which of the following statements about mechanical properties of muscles is TRUE? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. b C The force-velocity relationship occurs because the rate of cross-bridge formation decreases as the speed of a muscle contraction increases. d The force-length (length-tension) relationship indicates that isometric contractions produce more force when muscles are either long or short. The force-length (length-tension) relationship occurs because the number of available cross-bridges remains the same at all muscle lengths. The force-velocity relationship indicates that muscles generate greater amounts of force as the speed of a muscle contraction. increases.
Which of the following statements about intermuscular coordination is FALSE? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. b U The CNS uses knowledge about the all-or-none principle to coordinate activation patterns of multiple muscles. The CNS uses knowledge of the fiber-type composition of muscles to coordinate activation patterns of multiple muscles. The CNS uses knowledge of the number of joints that a muscle crosses to coordinate activation patterns of multiple muscles. d The CNS uses knowledge of the cross-sectional area of muscle fibers to coordinate activation patterns of multiple muscles.