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NEETZoologyLocomotion and Movement

Read the following statements and choose the follwoing option: 1. Mandible is one of the skull bones 2. Action potential in sarcolemma is is generated by acetylcholine 3. Increase in Ca++ level leads to the unmasking of active sites on actin. 4. Repeated activation of the muscles can lead to the accumulation of lactic acid due to anaerobic breakdown of glycogen. 5. Muscle contains a red coloured oxygen storing pigmen

Options

  1. AOnly 1 is incorrect
  2. BAll are incorrect
  3. CBoth 2 and 5 are correct
  4. DAll are correct except 3

Correct answer

C. Both 2 and 5 are correct

Step-by-step solution

The junction between a motor neuron and the sarcolemma of the muscle fibre is called the neuromuscular junction or motor-end plate. A neural signal reaching this junction releases a neurotransmitter (Acetyl choline) which generates an action potential in the sarcolemma.

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