Regional
When tectonic plates move and grind against each other, this is an earthquake. If the moving of tectonic plates were to occur beneath the ocean's surface, the result would be a tsunami.
The vertebra. The spine is made up of a chain of lots of smaller bones, each one of which is called a vertebra- collectively, they are known as the VERTEBRAE. The small flanges sticking out on either side of each vertebra are called PROCESSES.
When the cushion between the 6th and 7th vertebra (intervertebral disc) is gone, it can lead to a condition called degenerative disc disease. This can cause pain, stiffness, and reduced flexibility in the spine due to the vertebrae rubbing against each other. In severe cases, it may also result in nerve compression and radiating pain into the arms or legs. Treatment options may include physical therapy, medications, or surgery in some cases.
Water, Wind or Glacier could make rocks hit and grind each other. This process is termed Attrition.
Well, a herniated disc or "slipped disc" is when an intervertebral disc, (the cushions that sit between each vertebra of our spine) may slip out of place or rupture. If pressing on a nerve this may cause severe pain.
where people grind each other while dancing
A posterior annular tear is a tear in the ligament fibers that cover the inner core of a disc. The discs separate each vertebra in your spine. A posterior annular tear in the L5-S1 discs indicates the location in which these tears occur. L5 is the fifth and lowest of the lumbar vertebra and the S1 is the first and highest sacral vertebra.
tetoic plates grind the grind a slip past each other
I'm thinking this is an incorrectly worded question. Isn't there a disc between each vertebra in the spine? There are 26 discs in the spine.
they grind past each other
Friction
A posterior annular tear is a tear in the ligament fibers that cover the inner core of a disc. The discs separate each vertebra in your spine. A posterior annular tear in the L5-S1 discs indicates the location in which these tears occur. L5 is the fifth and lowest of the lumbar vertebra and the S1 is the first and highest sacral vertebra.
So the vertebrae in your spine will not grind agaist each other.
Earthquakes
Regional
The shock absorber discs between each vertebra are made up of a soft, gel-like nucleus and a hard outer casing. With injury or aging, the disc may tear open, allowing the nucleus to seep out. This nucleus puts pressure on the nearby nerves. This is referred to as a herniated disc. Our spinal cord protects the nerves that send messages to the brain. It is made up of a series of connected bones or vertebrae. These vertebrae are stacked on top of each other forming an āSā shape with the curve being the most at the neck and in the lower back. Each vertebra has a disc between them which acts as a shock absorber. Unfortunately, though there are situations where the spine can be injured and needs surgery. Ranka Hospital, Pune provides treatment for a herniated disc.