wobble. Flexibility in the base-pairing rules in which the nucleotide at the 5' end of a tRNA anticodon can form hydrogen bonds with more than one kind of base in the third position (3' end) of a codon.
The conclusion that the amygdala is the brainâs fear center wrongly assumes that the feelings of âfearâ and the responses elicited by threats are products of the same brain system. While amygdala circuits are directly responsible for behavioral/physiological responses elicited by threats, they are not directly responsible for feelings of âfear.â.
Parts of the Nervous System. The center of the nervous system is the brain. The brain takes in what your eyes see and ears hear, and if you decide that you want to move around, your brain tells your muscles to do it.Your brain makes your muscles move by sending tiny electrical signals to them through your nerves.arts of the Nervous System. The center of the nervous system is the brain. The brain takes in what your eyes see and ears hear, and if you decide that you want to move around, your brain tells your muscles to do it.