we do not sense any pain when we cut our hair or clip our nails why?
Sensing pain means nerves are struck. There are no nerves in hair or nails.
Nerve endings are points on the surface of body which
send messages to brain when we feel pain.
There are no nerve endings in nail and hair.
thank you very much
When we cut our hair or clip our nails, there is typically no pain because these structures—hair and nails—are made up of dead cells. These dead cells lack the nerve endings, which are responsible for transmitting pain signals to our brain.
To understand this concept further, let's break down how pain is typically perceived by our body. Our skin and other organs have specialized nerve endings called nociceptors that can detect various types of stimuli, including temperature, pressure, or injury. When an injury occurs, such as cutting our skin, these nociceptors are activated and send signals to our brain, which then interprets these signals as pain.
In the case of hair or nails, new cells are continuously produced at the base of the structure. As these cells grow and harden, they are pushed outwards, away from the living tissue below. By the time hair or nails become visible, they are essentially composed of dead tissue, including keratin—a tough protein. Since there are no nerve endings in these dead cells, we do not sense pain when cutting them.
It's important to note that excessive force or cutting too close to where the hair or nail is still attached to the living tissue can lead to discomfort or pain. However, the normal trimming or cutting of hair and nails should not cause pain due to the absence of nerve endings in the dead tissue.