20
votes
Accepted
How can tooth enamel feel pain when drilled by a dentist?
Yes you are right. It is the dentin.
Enamel has got no nerves.
So when the dentist use his/her instrument, initially there is no pain (if the enamel is intact).
The next layer is dentin. As you said, ...
- 846
18
votes
Accepted
Is it painful for the hen to lay eggs?
We really don't know - we can't really ask the chicken. At least, it's unlikely it's as painful as it can be with humans.
The reason human birth is (or can be) very painful is that the human baby's ...
- 2,258
16
votes
Accepted
Is it possible to feel pain in some part of a body, but the pain "feeling" is introduced somewhere else?
Yes, this is pretty common. Examples include
sciatica, pain felt down the back of a leg to the foot, from irritation to components of the sciatic nerve but commonly at the level of the sciatic ...
- 794
14
votes
What is the cause that angina pectoris is felt in your left arm?
It has mainly to do with the embryonic origin of organs, with the heart being a typically left sided organ, it develops sharing some nerves with the left thorax and left arm.
There is however high ...
14
votes
Accepted
Inability of vultures to digest diclofenac
Via: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1618889/
Post-mortem examination revealed extensive visceral gout in all diclofenac-treated birds (see electronic supplementary material). ...
- 5,568
8
votes
Accepted
How does Tylenol relieve pain without making me drowsy?
Opiate pain killers or pain killers that act on opioid receptors have a different mechanism of action than NSAIDs. They tend to act as receptor agonists which exert their effect on the CNS (oxycodone ...
- 8,101
8
votes
Do oysters feel pain?
It is very unlikely that oysters feel pain however it's not clear what the question actually means
What does it mean to say something feels pain? The most reductive biological interpretation is to ...
- 6,869
6
votes
Why is burn feeling 'slower' than touch?
When you touch an object, a compression wave from the collision travels through your body at the speed of sound. A sensor at any depth in your skin can pick up that signal at roughly the same time as ...
- 214
6
votes
Accepted
Reseach on feeling pain of other people
I believe what you are referring to is called 'sympathetic pain,'and the reason you can't find any papers on the subject is because it is not really a well studied concept. That is primarily due to ...
- 534
6
votes
Is it possible to feel pain in some part of a body, but the pain "feeling" is introduced somewhere else?
An example of pain evoked by distant sites in the body is referred pain. It's defined as pain perceived at a location other than the site of the painful stimulus. An example is the case of angina ...
- 52.3k
6
votes
Accepted
Do beavers' tails hurt from being dragged?
No, it does not, otherwise beavers wouldn't walk with their tails dragging. Here is a picture of the bottom of a beaver's tail:
Found here
and here is a closeup (probably of the top, but they're very ...
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5
votes
Is it possible to feel pain in some part of a body, but the pain "feeling" is introduced somewhere else?
Another common medical condition that causes pain elsewhere is the spinal disc herniation. The disc pushes against the nerves in the spinal and causes pain, usually in the leg, foot or arm. https://en....
- 3,657
5
votes
What is the cause that angina pectoris is felt in your left arm?
Our pain-sensing neurons work in useful ways only when they inform about skin areas or muscles. When nettles sting your left hand, you want to retract your left hand right away. This is in part an ...
- 1,140
5
votes
Do lobsters possess a nervous system to feel pain?
To answer if lobsters have a nervous system:
YES
References:
Mapping of serotonin-like immunoreactivity in the lobster nervous system
BS Beltz, EA Kravitz
Journal of Neuroscience 1 March 1983, 3 (3)...
- 153
5
votes
Do lobsters possess a nervous system to feel pain?
Yes they feel pain, at least in certain areas of their body without a doubt. Research has been done to test whether they feel pain consciously (a signal to the brain that is perceived allows for ...
- 14.3k
4
votes
Accepted
At what stage is the nervous system developed enough to interpret neuronal signals as 'pain'?
First, there is some confusion on your part about heart cells and pain perception. Heart cells generate an action potential intrinsically; they do not need the central nervous system to beat (your ...
- 24.7k
4
votes
Accepted
Do lobsters possess a nervous system to feel pain?
Before answer, What intuitively seems:
Lobsters structurally contains sense-organs like eye and antennae, and output organs like muscles through which they move. So plausibly these organs should ...
- 2,659
4
votes
Does spinal cord have pain receptors?
tl;dr
Like the brain, the receptors commonly called 'pain' receptors aren't in the spinal cord itself, but they are present in the meninges around the cord, and damage to the cord can be perceived as ...
- 8,751
3
votes
Do oysters feel pain?
Referring to this research article on PubMed, oysters have their sensory system and organisation like humans. So any change or invasion in the system of Oyster is communicated through sensory organs. ...
3
votes
Accepted
What stimulates a nociceptor?
All of these are affected by specific characteristics of the nociceptors.
Nociceptors are only sensitive to high pressure. The low pressure stimulus would only stimulate mechanoresceptors which ...
- 4,669
3
votes
Accepted
How do we share pain?
There has been a study by Jackson, Meltzoff & Decety (2005) who investigated the neurocorrelates involved in the perception of pain.
In order to assess this, they carried out an fMRI study in ...
- 2,603
3
votes
Accepted
Laparoscopic surgery: Why did the gas cause pain in my shoulder, and how did it escape my body?
Does CO2 cause pain?
CO2 can cause pain by applying pressure on the diaphragm; also stretching of the diaphragm due to the body position can irritate the phrenic nerve (Indian Journal of Surgery).
...
- 8,049
2
votes
Do ants feel pain?
In short, scientists usually conclude that pain is unlikely to be found in insects in the way it is defined in humans, but this is difficult or impossible to test directly.
In humans, pain is often ...
- 375
2
votes
Can one die from pain?
The evolutionary functional answer here is probably not right. 'Expecting biology to behave a certain way is not a safe bet!'
Its a common misconception that all living things are designed to endure ...
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2
votes
Reseach on feeling pain of other people
The OP might be asking about what is called mirror touch synaesthesia
Like all synaesthesia [also spelled synesthesia] this is a new area of research. I have synaesthesia but I don't have this kind. ...
2
votes
Is it possible to feel pain in some part of a body, but the pain "feeling" is introduced somewhere else?
Just as an FYI, the answer is emphatically yes. I have two separate areas of my body which exhibit those symptoms. But my answer does not "track" those of others here. They talk about (I would ...
- 29
2
votes
Accepted
Results of self-administration study about pain in honeybees?
The paper shows that honeybees prefer sucrose (sugar) solution to a sucrose+morphine (pain reducing) solution. They find that injuring the bees (i.e., potentially causing pain) does not change the ...
- 44.1k
2
votes
Is it the theory of the 5 senses obsolete?
It depends who's counting and according to what criteria.
Some neuroscientists argue that smell and taste are one sense because altering one produces substantial changes in the other.
Conversely, if ...
- 3,052
2
votes
What happens when someone is subjected to extreme pain beyond any pain tolerance?
The full definition for pain tolerance provided by the link you gave is:
The maximum intensity of a pain-producing stimulus that a subject is willing to accept in a given situation. [emphasis added]
...
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Only top scored, non community-wiki answers of a minimum length are eligible