Question

When the knee is hit with a rubber hammer, the leg kicks forward, and then returns to the original position. This is an example of a spinal reflex arc. The sensation of the hammer travels to the , where it activates motor neurons that cause the leg to move. This reflex is part of the nervous system

Answer 1

Answer:

The right answer is Spinal cord (central nervous system).

 The right answer is Vegetative nervous system (called also autonomic nervous system).

Answer 2

When the knee is hit with a rubber hammer, the leg kicks forward and then returns to the original position.

• The response that occurs when the knee is hit with a rubber hammer is called the knee-jerk reflex but scientifically it is called the monosynaptic reflex.
• When the knee is hit with a hammer the leg kicks and returns to the original position this is an example of a spinal arc.
• The spinal reflex arc is a reflex muscle contraction. The sensory stimulus occurs from the receptors of muscles and the sensory receptors are contained within the spinal cord.
• The reflex arc consists of a series of five steps which works as a replay team.
• The five steps are Sensor, sensory neuron, control centre, motor neuron and muscle.
• When the rubber hammer is hit the patellar tendon stretches the muscle spindle producing a signal which travels to the spinal cord activating the motor neuron and causing the leg to move.

#SPJ2