MCQ
Isotonic contraction takes places during:
- AExercise
- BLoad on head
- CAll of these
- DWalking
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$(I)$ Transports the atmospheric air to the alveoli.
$(II)$ Clears it from foreign particles.
$(III)$ Humidifies respiratory system.
$(IV)$ Brings air to body temperature
$II. $ $Z-$ lines back to their original position
$III.$ Masking of actin filament
$IV.$ Relaxation of muscles
Arrange the above given steps in the sequence of event from first to last