Hi There! :)
<span>Based only on their anatomy rank gorillas bears chimpanzees and mice from most recent common ancestor with humans to least recent common ancestor
</span>The animal that would have the most recent common ancestor with humans is the one that is physically most similar to humans. So we start with
Chimpanzee
Gorilla
Bear
Mice
<span>Mice are the least similar to humans among all of those so they would have the least recent common ancestor with us</span>
According to the gate control theory of pain, the structure that is the likely location of the gate is the substantia gelatinous.
<h3>
What is substantia gelatinous?</h3>
- A group of cells called the substance gelatinosa can be found in the spinal cord's gray matter (dorsal horns).
- It receives direct input from the dorsal (sensory) nerve roots, particularly those fibers from pain and thermoreceptors, and is present at all levels of the cord.
- The spinal cord has a system that permits pain signals to be amplified in the brain before being processed at the spinal cord itself, or attenuated there, in accordance with the Gate Control Theory of Pain.
- The "gate" is the device that either permits or forbids the transmission of pain signals.
- To feel intense pain if the gates are more open since many more pain signals will flow through to the brain.
- The likelihood that you will feel less discomfort increases as the gates are more tightly shut.
Learn more about spinal cord here:
brainly.com/question/1401079
#SPJ4
