Fight or Flight

Fight or flight video What controls fight or flight? What is released into blood?

How did the loud noise make you feel? What reaction did I make? What reaction did my neighbor make? Quote of the Day: “People INSPIRE you, or they drain you. Pick them wisely.” Hansen

Card Sort Raise your hand when you are complete Stimulus Response

Fight or Flight When threatened, many animals display a fight or flight reaction. Nose, throat and lungs widen to increase oxygen intake. Breathing increases. Hairs stand up to give impression of larger size Pupils dilate to improve vision This reaction releases the hormone adrenaline, which changes the body’s behavior. Heart rate increases to pump blood faster Blood vessels increase in size to enable more oxygen to reach limbs Next >

Fight or Flight These changes prepare the body for either running away from the danger, or engaging in a fight. Nose, throat and lungs widen to increase oxygen intake. Breathing increases. Hairs stand up to give impression of larger size Pupils dilate to improve vision When faced with a large predator, an animal will most likely run away. Heart rate increases to pump blood faster Blood vessels increase in size to enable more oxygen to reach limbs If this is not possible then the animal will fight. Next >

Animal Response to Infection Animals have very sophisticated ways of dealing with invasions of bacteria and viruses. When the body detects the presence of these invaders, it recognizes that they could cause harm. So the immune system is triggered to fight the invaders and get rid of them. Next >

Animal Response to Infection One way the immune system does this is to raise the body’s internal temperature, causing a fever. The increased temperature makes it very difficult for the bacteria or viruses to reproduce. Vomiting will often occur too, in an effort to rid the body of the invaders. Next >

Elaborate On your left page you will create a scenario/story where an organism is reacting to a stimulus and fight or flight is being displayed. Your story must also contain how homeostasis is achieved after the response.

Exit Which of the following would be an  example of an organism’s response to the environment to achieve homeostasis? A. An adaptation where a  hermit crabs uses  empty shells in order to prevent drying up.   B.  Sun shining on a bright sunny day C.  A plant losing water during a drought since there is lack of rainfall D. A hermit crab walking on a beach on a hot sunny day during the summer A crocodile quietly stalks its prey, a wildebeest, drinking at a water hole. The wildebeest suddenly sees the crocodile approaching. The wildebeest’s body responds by – A shedding thick fur. B blinking rapidly. C increasing the heart rate. D requiring more food.

Question 4 If the Mimosa plant is touched, the leaves quickly fold and the plant appears to wilt. When it is left alone, the leaves slowly open up again. What is most likely to be happening to the plant? A) It is frightened B) It is responding to the external stimulus of touch C) It is responding to the internal stimulus of a growth hormone D) It has died Next >