https://padlet.com/ian_powell/week3 en-us 2017-01-14 18:52:58 UTC 2017-01-16 10:42:59 UTC hello@padlet.com ian_powell https://padlet.com/ian_powell/week3/wish/147202792 2017-01-14 18:54:44 UTC https://padlet.com/ian_powell/week3/wish/147202792 ian_powell https://padlet.com/ian_powell/week3/wish/147202802 2017-01-14 18:54:55 UTC https://padlet.com/ian_powell/week3/wish/147202802 ian_powell https://padlet.com/ian_powell/week3/wish/147202804 2017-01-14 18:54:59 UTC https://padlet.com/ian_powell/week3/wish/147202804 ian_powell https://padlet.com/ian_powell/week3/wish/147202814 2017-01-14 18:55:16 UTC https://padlet.com/ian_powell/week3/wish/147202814 ian_powell https://padlet.com/ian_powell/week3/wish/147202825 2017-01-14 18:55:25 UTC https://padlet.com/ian_powell/week3/wish/147202825 ian_powell https://padlet.com/ian_powell/week3/wish/147202844 2017-01-14 18:56:13 UTC https://padlet.com/ian_powell/week3/wish/147202844 ian_powell https://padlet.com/ian_powell/week3/wish/147202847 2017-01-14 18:56:19 UTC https://padlet.com/ian_powell/week3/wish/147202847 ian_powell https://padlet.com/ian_powell/week3/wish/147202866 2017-01-14 18:57:02 UTC https://padlet.com/ian_powell/week3/wish/147202866 ian_powell https://padlet.com/ian_powell/week3/wish/147202873 2017-01-14 18:57:10 UTC https://padlet.com/ian_powell/week3/wish/147202873 ian_powell https://padlet.com/ian_powell/week3/wish/147202891 2017-01-14 18:57:43 UTC https://padlet.com/ian_powell/week3/wish/147202891 ian_powell https://padlet.com/ian_powell/week3/wish/147202942 2017-01-14 18:59:07 UTC https://padlet.com/ian_powell/week3/wish/147202942 ian_powell https://padlet.com/ian_powell/week3/wish/147202951 2017-01-14 18:59:23 UTC https://padlet.com/ian_powell/week3/wish/147202951 ian_powell https://padlet.com/ian_powell/week3/wish/147202960 2017-01-14 18:59:43 UTC https://padlet.com/ian_powell/week3/wish/147202960 https://padlet.com/ian_powell/week3/wish/147324547 The pedestrian senses danger by simply seeing the car coming. This visual information is processed by the brain and sent to the nervous system. The nervous system responds near-instantly and sends instructions to the muscles, so the man can move out of the way. 

The fight or flight response comes from the systemic part of the nervous system. The hypothalamus, which is located in the brain, sends a signal to the adrenal gland. The adrenal gland discharges a rush of a chemical called epinephrine. Epinephrine then flows through the body and prepares each part to act, whether that act be fighting or fleeing. It binds to the surfaces of organs rather than entering into them.

Epinephrine goes to the heart to increase heart beat rate, the lungs to increase breathing rate, the liver to produce glucose for extra energy, the eyes to cause them to dilate and the digestive system/stomach to inhibit digestion. ]]> 2017-01-16 10:32:02 UTC https://padlet.com/ian_powell/week3/wish/147324547