Which one of the following statements about the gate-control theory is true?

A) Pain impulses create a gate leading to the brain.

B) The brain is capable of generating pain on its own.

C) The gate closes when pain messages go to the brain.

D) Damage to small nerve fibers lets pain through to the brain.

I ruled out (A) and (B)

I really believe its (D) because the book says, "But when the body tissue is injured, the large fibers are damaged and smaller fibers open the gate, allowing pain messages to reach the brain unchecked"

Haven't completely ruled out (C) because the book also says, "Normally , the gate is kept shut, either by impules...or by signals coming down from the brain itself"

Please help!

I wish I was in 2016 again

I think you're are right about C.

So you believe its (C)? Books says that gate kept shut unless by signals coming down from the brain. So, now I'm starting to doubt (B) The brain is capable of generating pain on its on. If (C) is the right answer then several other answeres could be right, correct?

I still lean towards (D) but so confused.

It can't be "D" because the book says large fibers not small. I think "b" is the correct answer.

I'm sure it is not C . i think it is B

Based on the information you have provided and the statements from the book, it seems that statement (D) is the most accurate one. The gate-control theory suggests that damage to small nerve fibers allows pain messages to pass through to the brain unchecked. This supports the idea that when body tissue is injured, the large fibers are damaged and the smaller fibers open the gate, allowing pain messages to reach the brain. Thus, statement (D) is true according to the given information.

However, it is important to note that you have not completely ruled out statement (C) either. The gate-control theory states that normally the gate is kept shut, either by impulses or signals coming down from the brain itself. So statement (C) could also be a valid statement, but it does not fully explain the gate-control theory as (D) does.

To get a definitive answer, it would be best to consult the book or any additional reliable sources that discuss the gate-control theory in more detail.