Muscle contraction - class-XI

Casual Mode - Take your time!

1 / 50
✓
Correct
0
✗
Incorrect
0
★
Score
0%
Multiple Choice

Which statements about muscle contractions are true?
(i) Acetylcholine is released when neural signal reaches motor end plate
(ii) Muscle contraction is initiated by a signal sent by CNS via a sensory neuron
(iii) During muscle contraction, isotropic band gets elongated
(iv) Repeated activation of the muscle can lead to lactic acid accumulation.

  1. i and iv
  2. i and iii
  3. ii and iii
  4. i, ii and iii
  5. i and ii
Change Mode