Question: What region of the brain is the amygdala located? Passage 1:Corals, including some major extinct groups Rugosa and Tabulata, have been important reef builders through much of the Phanerozoic since the Ordovician Period. However, other organism groups, such as calcifying algae, especially members of the red algae Rhodophyta, and molluscs (especially the rudist bivalves during the Cretaceous Period) have created massive structures at various times. During the Cambrian Period, the conical or tubular skeletons of Archaeocyatha, an extinct group of uncertain affinities (possibly sponges), built reefs. Other groups, such as the Bryozoa have been important interstitial organisms, living between the framework builders. The corals which build reefs today, the Scleractinia, arose after the Permian–Triassic extinction event that wiped out the earlier rugose corals (as well as many other groups), and became increasingly important reef builders throughout the Mesozoic Era. They may have arisen from a rugose coral ancestor. Rugose corals built their skeletons of calcite and have a different symmetry from that of the scleractinian corals, whose skeletons are aragonite. However, there are some unusual examples of well-preserved aragonitic rugose corals in the Late Permian. In addition, calcite has been reported in the initial post-larval calcification in a few scleractinian corals. Nevertheless, scleractinian corals (which arose in the middle Triassic) may have arisen from a non-calcifying ancestor independent of the rugosan corals (which disappeared in the late Permian).
 Passage 2:The fight-or-flight response involves nervous impulses which result in hormone secretions into the bloodstream. When a horse reacts to a threat, it may initially "freeze" in preparation to take flight. The fight-or-flight reaction begins in the amygdala, which triggers a neural response in the hypothalamus. The initial reaction is followed by activation of the pituitary gland and secretion of the hormone ACTH. The adrenal gland is activated almost simultaneously and releases the neurotransmitters epinephrine (adrenaline) and norepinephrine (noradrenaline). The release of chemical messengers results in the production of the hormone cortisol, which increases blood pressure and blood sugar, and suppresses the immune system. Catecholamine hormones, such as epinephrine and norepinephrine, facilitate immediate physical reactions associated with a preparation for violent muscular action. The result is a rapid rise in blood pressure, resulting in an increased supply of oxygen and glucose for energy to the brain and skeletal muscles, the most vital organs the horse needs when fleeing from a perceived threat. However, the increased supply of oxygen and glucose to these areas is at the expense of "non-essential" flight organs, such as the skin and abdominal organs.
 Passage 3:He opened 2015–16 season with 3 assist against Mersin İdman Yurdu in week 1, ended 5–2, serviced respectively to Cenk Tosun and Olcay Şahan. In week 3, he scored the opener of the away game directly from a set-piece against Gaziantepspor, which ended 4–0 in favour of Beşiktaş. He assisted the second strike of German international Mario Gómez against Eskişehirspor in week 7 game played away, ended 2–1. He produced another assist to Olcay Şahan in week 9 game played away against Antalyaspor, ended 5–1 for Beşiktaş. Özyakup earned and converted a penalty kick to secure 1 points for Beşiktaş on dying minutes of week 10 game while Kasımpaşaspor were being trailed by Beşiktaş with 3–2. He scored the winner of week 11 game against Bursaspor by assist of Atiba Hutchinson, ended 1–0. He scored with a mid-range shot outside the box in additional time of week 12 game against Sivasspor, ended 2–0. In week 17, he scored the opened the score with a serial of comfortable dribbling over 2 defenders and goalkeeper, following the assist of Mario Gómez, against Konyaspor, ended 4–0. On 22 October 2015, Özyakup assisted Mario Gómez on UEFA Europa League grup stage week 3 game against FC Lokomotiv Moscow, ended 1–1.

Output: 2