I believe it is the Hypothalamus. It activates the sympathetic nervous system and the adrenal-cortical systems. Fight or flight response is a specific biochemical reaction that both humans and animals experience during intense stress or fear. It is the body's response towards perceived threat or danger. During the reaction, certain hormones such as adrenaline and cortisol are released, thus speeding the heart rate, slowing digestion, and changing various other autonomic nervous functions, and therefore giving the body a burst of energy and strength.
The correct answer is D: the adrenal glands. More specifically, the adrenal medulla<span> produces </span>catecholamines<span>, in particular especially </span>norepinephrine<span> and </span>epinephrine. Estrogen<span>, </span>testosterone<span>, </span>cortisol<span>, </span>dopamine<span> and </span>serotonin also play a role in the response.
Scientists currently monitor underground movements, such as earthquakes and nuclear tests, using seismometers – instruments that measure the motion of those events at the Earth's surface.
When blood glucose levels decrease, Your liver which is a glycogen storage converts glycogen to glucose and releases it into circulation. Further energy ( ATP Molecules ) is obtained by the TCA Cycle with subtraces like Fat and Protein.
