Locomotion and Movement Question 3
3. Sliding filament theory can be best explained as:
[2015 RS]
(a) Actin and Myosin filaments shorten and slide pass each other
(b) Actin and Myosin filaments do not shorten but rather slide pass each other
(c) When myofilaments slide pass each other, Myosin filaments shorten while Actin filaments do not shorten
(d) When myofilaments slide pass each other Actin filaments shorten while Myosin filament do not shorten
Show Answer
Answer : b
Hints & Solutions
(b) Sliding filament theory was given by Huxley and Huxley (1954). It states that Actin and Myosin filaments do not become short but rather slide past each other. Because of the sliding of actin filaments over myosin, the length of the I-band will change.
