Thursday, September 11, 2014

Homeostasis Lab

Hypothesis: If we eat a lot of sugar and run after then our blood sugar will increase because the sugar added to our blood stream will increase our sugar along with the exercise that increases our heart rate. 
Procedure: So there were multiple steps that we had to take in order to proceed with this lab along with different pro cautions.
First we had to make sure to wipe off the spot that was going to get poked to check the glucose level. Then we put a strip in the checker. Their fingers were poked by the finger poker. The blood was added to the strip. We checked both Annie and Nisa's glucose levels before they ate any type of sugar. Then we had their heart rates measure before any type or form of exercise. They held two hand bars and their heart rate was measured, we had taken the most constant rate. Once that was all done, a bag of skittle was split between the two and each of them had a glucose tablet. One of the girls had ran about 150 meters and as soon as she was done who heart rate and glucose level was measured. The second girl ran about 300 meters and her heart rate and glucose were also checked. 
Observation : In the end, our results are not what we expected at all. Nisa who had eaten about half bag of skittles and had ran about 200 meter glucose had increased by 8% and her heart rate increased 35%. Annie had ate the same amount of sugar but ran about 350 meters instead her glucose increased by 24% and her heart rate increased by about 50%.
Conclusion: In conclusion our hypothesis of, "If we eat a lot of sugar and run after then our blood sugar will increase because the sugar added to our blood stream will increase our sugar along with the exercise that increases our heart rate. ", was correct because both heart rate and blood sugar increased after we had consumed the sugar and ran in the parking lot. Nisa's heart rate started at 105 bpm and increased to 162 bpm and Annie's heart rate started at 72 bpm and increased to 140 bpm. Nisa's blood sugar started at 102 and increased to 111 and Annie's blood sugar started at 93 and increased to 122. Both Nisa and Annie's heart rate and blood sugar went up. Our bodies responded with homeostasis and had to work to  keep up the balance of our bodies. The graphs and table help to show you our data and procedure to understand what we did and the data out come from our lab. It makes everything clearer. 
Heart Rate & Blood Sugar
Participants
BeforeAfter% Change
Heart RateBlood SugarHeart Rate (Ran 150 meters)Blood SugarHeart Rate Blood Sugar
Nisa105 bpm102162 bpm11135.20%8.11%
Annie72 bpm93140 bpm12249.00%23.80%

Tuesday, September 2, 2014

Homeostasis Questions

What is homeostasis?
It indicates a dynamic state of equilibrium or a balance in which internal conditions vary, but always within relatively narrow limits. Our body is just running smoothly in easier terms.
What are some examples of homeostasis?
Some examples of homeostasis are when our blood pressure is on good number and our glucose isn't to high or to low.
What are negative feedback and positive feedback?
So negative feedback mechanism is when it shuts off the original stimulus or reduces it intensity. The mechanisms cause the variable to change in a direction opposite to that of the initial change, returning it to its ideal value.  The output shuts off the original stimulus for example the regulation of blood glucose levels.
Then positive feedback is the result or response enhances the original stimulus so that the activity is accelerated. Its positive because the changer that occurs proceeds in the same direction as the initial disturbance, causing the variable to deviate further and to negative feedback controls. The output enhances or exaggerates the original stimulus. An example is regulation of blood clotting.