Physio Ex 6

Exercise 6: Cardiovascular Physiology: Activity 3: Examining the Effect of Temperature on Heart Rate Lab Report
Pre-lab Quiz Results
You scored 75% by answering 3 out of 4 questions correctly.
1. Organisms that usually maintain the same internal body temperature in spite of environmental temperature changes are
You correctly answered: c. homeothermic.
2. The general name for the process that maintains the internal body temperature in humans is
You correctly answered: a. homeostasis.
3. The electrolytes in a Ringer's solution are required to
Your answer : a. increase heart rate.
Correct answer: b. provide for autorhythmicity.
4. An internal body temperature that is above the normal range is
You correctly answered: b. hyperthermic.

03/20/13

page 1

Experiment Results
Predict Question:
Predict Question 1: What effect will decreasing the temperature of the Ringer's solution have on the heart rate of the frog?
Your answer : b. decrease in heart rate
Predict Question 2: What effect will increasing the temperature of the Ringer's solution have on the heart rate of the frog?
Your answer : c. increase in heart rate
Stop & Think Questions:
What effect do you think a fever of 104°F would have on heart rate?
You correctly answered: c. increase in heart rate
Experiment Data:
Solution
23°C Ringer's
5°C Ringer's
32°C Ringer's

Heart Rate
59
49
68

03/20/13

page 2

Post-lab Quiz Results
You scored 75% by answering 3 out of 4 questions correctly.
1. In the 5°C Ringer’s solution, the frog heart
You correctly answered: c. beat slower than baseline.
2. In the 32°C Ringer’s solution, the frog heart
You correctly answered: b. beat faster than baseline.
3. If the human heart were experiencing hypothermia, what do you think would be the effect on heart rate?
You correctly answered: c. a decrease in heart rate
4. Without the Ringer's solution
Your answer: a. the heart would beat very slowly.
Correct answer: d. spontaneous cardiac