Why does this happen? - audacity impulse again?
i asked another question, and my biology teacher still couldnt answer it: why is it that when we hurt ourselves on our body, like our knees or our elbows, we cry. i know the receptors would send it to reflex arc to cause us to move away from the source of stimulus, but why does it cause us to cry - the headache wasnt in the eye!
Answers:
because emotionally, pain is distressing and distress can cause crying. Although when i hurt my knees or elbow, i don't cry , i usually swear, try asking your teacher why that may be
No one knows for sure why we cry when hurt. But it is known that tears that come because of pain contain special chemicals which are gone in the regular tears (the ones that keep your eyes moist).
One of these chemicals is Leu-enkephalin, a natural pain reliever. Perhaps, the purpose of crying when hurt is to release that chemical into the system, to numb the pain somewhat.
Another one of the chemicals released in pain-tears is adrenocorticotropic hormone. Its principal effects are increased production of androgens - the chemicals that make you be aware of stronger and more agressive; and cortisol - the "stress hormone" which is involved in response to stress and anxiety.
I think that the pain-induced tears are an evolutionary response to the damage that may be cause to our body. To be able to survive in the face of vulnerability, our ancestors had evolved a way to numb the pain and to quicken their reaction, as well as help the body to recover from the agitated state after the vulnerability has passed. That's exactly what the tears might be doing. Source(s): http://en.wikipedia.org/wiki/Tears#Types…
http://en.wikipedia.org/wiki/Enkephalin
http://en.wikipedia.org/wiki/Cortisol
yeah, the sense of touch or making pain to our body is noticed by the road of reflex arc.
So, we can know the sense of pain.
Although pain is not such thing of our verbs (can't be seen with eyes), the pain sensation is sent to the brain cause the sense of unease of the body.
So, the brain respond to pain by crying or making thing to relieve the pain.
Crying is also the response of the twinge stimulus.
This is actually quite complicated, and requires a definite level of knowledge of the anatomy and physiology of the brain.
You are quite right surrounded by saying that there is a reflex arc involved when we hurt ourselves. The sensory nerve fibre are "excited" by the painful stimulus and travel to the spinal cord. At the spinal cord the sensory nerve fibre synapses near an interneuron (an neuron that lies entirely within the CNS) which in turn synapses with a motor neuron cause a reflex withdrawal from the potentialy harmful stimulus. This is a purely involuntary reaction.
The sensory neuron, however, doesn't only just synapse with the interneuron involved in the reflex arc, but it also forms an ascending sensory pathway up the spinal cord into a structure called the "thalamus" which lies contained by the brain. The thalamus acts as a relay station in the brain. From here, signals arriving from the sensory pathway are sent to various areas of the brain depending on the situation. The key areas would be the "somatosensory cortex", the "primary motor cortex" (responsible for initiating our movement, but will not be discussed here), the "cerebellum" and the "limbic system".
The somatosensory cortex is an area of grey matter in the brain specifically involved in the processing of the sensation of pain, and also recognising where the tight stimulus originated.
http://pine.psych.cornell.edu/educational/brain_areas/somatosensory.jpg
The cerebellum is invloved in the fine coordination of movements. There is no fine control of movements with a reflex arc, so the muscle act is quick and relatively uncontrolled. The cerebellum allows for more coordinated complex movement, and provides balance when we carry out these movements e.g. if we requirement to jump backwards away from the stimulus in order to prevent further mar.
The limbic system is the area which we are interested in here. This is a very complex, and not a fully well understood area of the brain. On a simple stratum it is involved in emotional response, and also allows us to form certain memories. On the memory front, it allows us to remember those things that noxious to us for example e.g. you touch a pan when it's hot and it hurts, so you now associate the pan beside being hot, so you avoid touching it again in the future. (If this concept interests you, you may want to look up the satchel of "pavlov's dogs"). The limbic system is also invloved in emotion. It is this area of the brain that can impose us to feel angry or upset. It is therefore most likely this nouns that casues us to cry when we hurt ourselves. The limbic system is closely associated with a deep brain structure known as the hypothalamus.
http://www.creationofman.net/chapter3/chapter3_2.html
The hypothalamus also have links with the autonomic nervous system which is subdivided into the sympathetic and parasympathetic divisions. The sympathetic nervous system is invloved surrounded by our "fight or flight" response to a stimulus that is (potentially) harmful. Activation of the sympathetic division cause many changes to organs within the body such as increasing heart rate to suppy more O2 to the muscles within case we need to run away. It is possible that it could be down to the sympathetic innervation of the tear glands (lacrimal glands) that cause us to cry.
I apologise for the length of this, but i hope it gives you a small insight into what is a very interesting nouns of human biology. This is only a brief outline of what is a much more complex process. Source(s): I'm a medical student with a specific interest in neurology. Sources are knowledged gain from my lecture notes.
Pictures were search on google images, and have been cited as links in the text
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Answers:
because emotionally, pain is distressing and distress can cause crying. Although when i hurt my knees or elbow, i don't cry , i usually swear, try asking your teacher why that may be
No one knows for sure why we cry when hurt. But it is known that tears that come because of pain contain special chemicals which are gone in the regular tears (the ones that keep your eyes moist).
One of these chemicals is Leu-enkephalin, a natural pain reliever. Perhaps, the purpose of crying when hurt is to release that chemical into the system, to numb the pain somewhat.
Another one of the chemicals released in pain-tears is adrenocorticotropic hormone. Its principal effects are increased production of androgens - the chemicals that make you be aware of stronger and more agressive; and cortisol - the "stress hormone" which is involved in response to stress and anxiety.
I think that the pain-induced tears are an evolutionary response to the damage that may be cause to our body. To be able to survive in the face of vulnerability, our ancestors had evolved a way to numb the pain and to quicken their reaction, as well as help the body to recover from the agitated state after the vulnerability has passed. That's exactly what the tears might be doing. Source(s): http://en.wikipedia.org/wiki/Tears#Types…
http://en.wikipedia.org/wiki/Enkephalin
http://en.wikipedia.org/wiki/Cortisol
yeah, the sense of touch or making pain to our body is noticed by the road of reflex arc.
So, we can know the sense of pain.
Although pain is not such thing of our verbs (can't be seen with eyes), the pain sensation is sent to the brain cause the sense of unease of the body.
So, the brain respond to pain by crying or making thing to relieve the pain.
Crying is also the response of the twinge stimulus.
This is actually quite complicated, and requires a definite level of knowledge of the anatomy and physiology of the brain.
You are quite right surrounded by saying that there is a reflex arc involved when we hurt ourselves. The sensory nerve fibre are "excited" by the painful stimulus and travel to the spinal cord. At the spinal cord the sensory nerve fibre synapses near an interneuron (an neuron that lies entirely within the CNS) which in turn synapses with a motor neuron cause a reflex withdrawal from the potentialy harmful stimulus. This is a purely involuntary reaction.
The sensory neuron, however, doesn't only just synapse with the interneuron involved in the reflex arc, but it also forms an ascending sensory pathway up the spinal cord into a structure called the "thalamus" which lies contained by the brain. The thalamus acts as a relay station in the brain. From here, signals arriving from the sensory pathway are sent to various areas of the brain depending on the situation. The key areas would be the "somatosensory cortex", the "primary motor cortex" (responsible for initiating our movement, but will not be discussed here), the "cerebellum" and the "limbic system".
The somatosensory cortex is an area of grey matter in the brain specifically involved in the processing of the sensation of pain, and also recognising where the tight stimulus originated.
http://pine.psych.cornell.edu/educational/brain_areas/somatosensory.jpg
The cerebellum is invloved in the fine coordination of movements. There is no fine control of movements with a reflex arc, so the muscle act is quick and relatively uncontrolled. The cerebellum allows for more coordinated complex movement, and provides balance when we carry out these movements e.g. if we requirement to jump backwards away from the stimulus in order to prevent further mar.
The limbic system is the area which we are interested in here. This is a very complex, and not a fully well understood area of the brain. On a simple stratum it is involved in emotional response, and also allows us to form certain memories. On the memory front, it allows us to remember those things that noxious to us for example e.g. you touch a pan when it's hot and it hurts, so you now associate the pan beside being hot, so you avoid touching it again in the future. (If this concept interests you, you may want to look up the satchel of "pavlov's dogs"). The limbic system is also invloved in emotion. It is this area of the brain that can impose us to feel angry or upset. It is therefore most likely this nouns that casues us to cry when we hurt ourselves. The limbic system is closely associated with a deep brain structure known as the hypothalamus.
http://www.creationofman.net/chapter3/chapter3_2.html
The hypothalamus also have links with the autonomic nervous system which is subdivided into the sympathetic and parasympathetic divisions. The sympathetic nervous system is invloved surrounded by our "fight or flight" response to a stimulus that is (potentially) harmful. Activation of the sympathetic division cause many changes to organs within the body such as increasing heart rate to suppy more O2 to the muscles within case we need to run away. It is possible that it could be down to the sympathetic innervation of the tear glands (lacrimal glands) that cause us to cry.
I apologise for the length of this, but i hope it gives you a small insight into what is a very interesting nouns of human biology. This is only a brief outline of what is a much more complex process. Source(s): I'm a medical student with a specific interest in neurology. Sources are knowledged gain from my lecture notes.
Pictures were search on google images, and have been cited as links in the text
Related Questions: