Elbow joint is an example of
Ball and socket joint
Pivot joint
Hinge joint
Gliding joint
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Statements about the mechanism of muscle contraction are given below:I. Acetylcholine is released when the neural signal reaches the 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 muscles can lead to lactic acid accumulation.
Identify the correct statements.