Question

Choose the correct order of muscle contraction from starting to completion.

• A. Stimuli → Neurotransmitter Release of Ca2+ ⟹ Cross bridge formation → Excitation of T-system Sliding of actin filament
• B. Stimuli ⟹ Neurotransmitter Excitation of T-system ⟹ Release of Ca2+ → Cross bridge formation Sliding of
  actin filament → ‘H’ band diminishes
• C. Stimuli Excitation of T-system Neurotransmitter secretion Cross bridge formation ⟹ Sliding of actin filament ⟹ H-band diminishes
• D. Stimuli → Neurotransmitter Cross bridge formation ⟹ Excitation of T-system ⟹ Sliding of actin filament

Answer 1

The correct option is B

Stimuli ⟹ Neurotransmitter Excitation of T-system ⟹ Release of Ca2+ → Cross bridge formation Sliding of
actin filament → ‘H’ band diminishes

Stimuli ⟹ Neurotransmitter⟹ Excitation of T-system ⟹ Release of Ca2+ → Cross bridge formation Sliding of
actin filament → ‘H’ band diminishes