Homeostasis Case Study Answers

Homeostasis Case Study Answers Beginning: #1. The part of the brain that is responsible for raising Jim’s heartrate in the Medulla Oblongata. This is the part of the brain that is involved in the homeostatic control of heart rate (and blood pressure). However, the part of the brain that is responsible for raising Jim’s respiratory rate is the pons. This is the part of the brain that is in control of how fast we breathe. The part of the brain that is responsible for stimulating Jim’s sweating is the hypothalamus. This part of the brain uses homeostasis to return the body back to the correct temperature in ways like cooling the body down with sweat. #2. The part of the nervous system that is responsible for controlling the body’s unconscious functions in the autonomic nervous system. It controls things like heartbeat, breathing, and some digestive processes. Due to this phenomenon, a part (the sympathetic part) of this autonomic nervous system becomes engaged at the start of the race because the unconscious things that the ANS controls become increased. The physiological impacts that this has on Jim’s body would include dilated lungs bronchi to supporting heavier breathing, an increased heartbeat for more blood flow, and less digestion due to the presence of adrenaline. One minute in: #1. Jim used up his available supply of hemoglobin at the beginning of the race because he moved his muscles in such a way that was exerting and vigorous in order to get the race off to a good start. Due to this change, his muscles must now use his available oxygen supply within his cells since his available supply of hemoglobin is gone in order to maintain his homeostasis. #2. Jim's muscles feel like they are burning because of the sensory information that they are receiving from his nervous system. This burning feeling comes from his increased activity and increased fatigue that are occurring due to the physical activity that he is doing. Specifically, his muscles are using his stored glycogen within his cells and the byproduct of this is the production of lactic acid. This causes the burning feeling. Halfway mark: #1. Jim decreasing the demands his muscles are making is due to his fight or flight response. Jim’s brain decreased the production of adrenaline after the first minute because his body realized that it was not in danger and that the stress it is experiencing is constant. Jim’s body does this so it uses less o