Answer:
The answer is D.
Explanation:
The best strategy for the "which statment best describes xyx" multiple choice questions is to first rule out the ones that are false (in this case A because the thyroid is not located in the brain) and then pick the one that would be the most informative statment to say to someone who knows nothing about xyx. D is the most informative because it specifies the functions of both structures and says the function in simple terms for one. By the way, ova is female egg horomone.
Answer: Endorphins
Explanation: Endorphins are chemicals secreted by the brain also known as neurotransmitters that send electrical signals inside the nervous systems.
The factors that initiate the secretion of endorphins are stress and pain.
When endorphins are secreted they reduce feelings of pains, and in runners that cause a phenomenon called " Runners high" which allows runners to keep running without feeling pain or stress.
Well.. Usually no...
Unless they didn't sterilize or clean the tools used for the surgery.
Which would be quite the rare occasion...
good luck!