00:01
Hello students, in the first part of the question, we have to answer the type of reflex which has occurred when jack put his foot on the piece of broken glass and in the second half we have to answer how does jack maintain his balance.
00:18
So answer to the first part of the question, jack's immediate response to placing his foot on the piece of broken glass is an example of withdrawal reflex.
00:36
This reflex action occurs in response to a painful stimulus such as stepping foot on glass.
00:58
So the reflex works as follows.
01:01
First is the stimulus detection.
01:11
So when jack's foot comes in contact with the broken glass, specialized pain receptors in the skin known as nociceptors, this will detect the painful stimulus and then this nociceptors will send signals to the spinal cord.
01:48
Then next is reflex.
01:56
So the signal will travel along sensory neuron to the spinal cord especially the dorsal horn of the spinal cord.
02:05
Then next will be the interneurons.
02:12
So in the spinal cord interneurons will process the sensory input and then it will relay signal to motor neuron bypassing the brain and this quick involuntary response is crucial for a rapid protection from harm and then finally there will be motor response.
02:37
The motor response in this motor neurons will transmit signals to the muscles in jack's leg and this will initiate a reflexive contraction of the muscle which involves withdrawing his leg.
02:51
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