Locomotion and MovementHard
Question
Which statement is correct for muscle cortraction ?
Options
A.Length of H-zone decrease
B.Length of A-band remains constant
C.Length of I-band increases
D.Length of two Z-line increases
Solution
When Ca+ ions combine with troponin contraction of muscle initiates.
During contraction, the Z-lines come closer together and the sarcomere becomes shorter. The lengthe of A-band remains constant. I-bands shortens and H-zone narrows.
During contraction, the Z-lines come closer together and the sarcomere becomes shorter. The lengthe of A-band remains constant. I-bands shortens and H-zone narrows.
Create a free account to view solution
View Solution FreeMore Locomotion and Movement Questions
The cup-shaped structure of pelvic girdle, the acetabulum in man is formed by...Which state of a living muscle, are the following events associated ?1. Ca+2 released by sarcoplasmic reticulum 2. Actin...The bony sockets of the jaws in which the teeth are implanted, are known as...The thick filaments in the ′A′ band are also held together in the middle of this band by a thin fibrous memb...Synovial membrane is found in...