2. Table 1–Baseline Blood Pressure
Systolic pressure Diastolic pressure Mean arterial pressure
(mm Hg) (mm Hg) (mm Hg)
151 81 98
Table 2–Blood Pressure Response to Cold
Systolic pressure Diastolic pressure Mean arterial pressure
(mm Hg) (mm Hg) (mm Hg)
134 73 90
Table 3
Heart rate Time
Condition
(bpm) (s)
Resting heart rate 77.87
Maximum heart rate 81.96 40.01
Rebound heart rate 77.84 180.2

3. 1. The systolic pressure, diastolic pressure, mean arterial
pressure, and heart rate would increase because a fight
or flight situation would release adrenaline; just like the
cold stimulus did but on a larger scale.
2. 120-139/80-89, pre-hypertension
3. What was expected from the experiment was that the
maximum heart rate would gradually increase to reach
its max; however, in our data the max heart rate was
reached immediately when he immersed his foot in the
ice water. The physiologic mechanism that causes this
increase is a sympathetic response which causes an
increase in heart rate; however in our subject the
sympathetic response wasn’t created because of many
different variables about the subject that caused a
higher resistance to the stress of the ice water.

4. 4. After the maximum heart rate the heart rate of the
subject declined steadily until it reached his rebound
heart rate. The minimum heart rate was when the
subject was at rest then the max occurred when the
stress was introduced. Therefore, once the stress was
taken away (after max was reached) that the body would
then begin to use mechanisms to maintain homeostasis.
Once the body had achieved homeostasis the heart rate
was back to his initial resting heart rate throughout the
remainder of the experiment.
5. It took about 140 seconds for our subject’s heart rate to
reach his rebound heart rate. This shows that his heart
rate could increase faster through shock/stress
but, when the mechanisms were trying to maintain
homeostasis it takes them longer to get the body back
to a normal heart rate.

5. Table 1–Baseline Blood Pressure
Systolic pressure Diastolic pressure Mean arterial pressure Pulse
(mm Hg) (mm Hg) (mm Hg) (bpm)
136 76 115 84
Table 2–Blood Pressure After Exercise
Systolic pressure Diastolic pressure Mean arterial pressure Pulse
(mm Hg) (mm Hg) (mm Hg) (bpm)
162 84 110 91
Table 3–Heart Rate
Condition
Resting heart rate (bpm) 84
Maximum heart rate (bpm) 91
Recovery time (s) 38

6. 1. The trends that occurred in
systolic, diastolic, and mean arterial pressure is
that they all increased as well as the pulse with
exercise. The cardiac output with a stroke
volume of 75 mL/beat is 6825, and with a
stroke volume of 100 is 9100 mL/beat. So the
change in cardiac output was 2275 mL/min.
2. The pulse increased because the heart rate is
dramatically increasing because your body is
working harder.
3. a) There is a lighter pulse because the walls are
dramatically bigger. b) There is a heavier pulse
because more blood is pumping out.

7. 4. The resting heart rate is 84. 91 is the maximum.
Using this information we see there is a 7%
increase.
5. Our maximum is lower than all the other groups in
our class. We did not expect this because we
thought everyone would have around the same
heart rate.
6. Our recovery time is shorter than all the other
groups in our class. We did expect this because our
maximum heart rate was the lowest out of all the
other groups.
7. This specific person at rest would have a slower
heart rate and while exercising would have a faster
heart rate.
8. We would administer a medicine that slows the
heart rate down.

8.  Through these two experiments we learned
that if we introduce our subject to exercise or
a stress that their heart rate will increase
fairly quickly; however, the systems in our
body that work to maintain homeostasis take
a longer time to get our body back to a
normal resting heart rate. This shows that our
subject is fairly normal and his/her body
homeostasis systems are functioning
properly.