Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEETZoologyLocomotion and Movement

With the help of a diagram, choose the change which occurs during muscle contraction?

Options

  1. AShortening of A, H and I bands.
  2. BNo change in A- band.
  3. CNo change in I- band.
  4. DSarcomere do not shorten.

Correct answer

B. No change in A- band.

Step-by-step solution

The ‘Z’ line attached to these actins are also pulled inwards thereby causing a shortening of the sarcomere, i.e., contraction. It is clear from the above steps, that during shortening of the muscle, i.e., contraction, the ‘I’ bands get reduced, whereas the ‘A’ bands retain the length

Practice Locomotion and Movement on Quantrex Academy →

More from Locomotion and Movement

Which of the following represents the correct sequence of arrangement of bones in the lower limb of humans ? 2026The number of vertebrae in a human is __________. 2026Which of the following statements are correct with reference to human endoskeleton ? A. Human skull is monocondylic. B. The joint between any two adjoining vertebrae is a cartilagi 2026Choose the correct statements regarding muscle contraction. A. A motor neuron carries a signal sent by the Central Nervous System (CNS) to the sarcolemma of the muscle fibre. B. Th 2026Sperm motility is due to __________. 2026Match List I with List II related to muscular/skeletal system : List I List II A. Tetany I. Inflammation of joints B. Arthritis II. Autoimmune disorder affecting neuromuscular junc 2026Which of the following is the correct order of arrangement of vertebrate column from the head to toe ? 2026Select the correct statements regarding mechanism of muscle contraction. A. It is initiated by a signal sent by CNS via sensory neuron. B. Neurotransmitter generates action potenti 2024 Full Locomotion and Movement list All NEET PYQs