PhysioEx Exercise 4 Activity 1.pdf - PhysioEx Exercise 4...

1/14/2020 PhysioEx Exercise 4 Activity 1
1/12
PhysioEx Lab Report
Exercise 4: Endocrine System Physiology
Activity 1: Metabolism and Thyroid Hormone
Name: Hilary Richardson
Date: 14 January 2020
Session ID: session-491f9d04-9d5d-10d5-5057-530c94a6034b
Pre-lab Quiz Results
You scored 100% by answering 6 out of 6 questions correctly.
Experiment Results
Predict Questions
Which of the following statements about metabolism is false 1 ?
Thyroid-stimulating hormone (TSH) is 3
An injection of TSH to an otherwise normal animal will cause which of the following? 4
Thyrotropin-releasing hormone (TRH) is 5
Which of the following statements is true? 6
Predict Question 1: Make a prediction about the basal metabolic rate (BMR) of the remaining
rats compared with the BMR of the normal rat you just measured.
1

1/14/2020 PhysioEx Exercise 4 Activity 1
2/12
Stop & Think Questions
Predict Question 2: What do you think will happen after you inject thyroxine into the three
rats?
2
Predict Question 3: What do you think will happen after you inject TSH into the three rats? 3
Predict Question 4: Propylthiouracil (PTU) is a drug that inhibits the production of thyroxine
by blocking the attachment of iodine to tyrosine residues in the follicle cells of the thyroid
gland (iodinated tyrosines are linked together to form thyroxine). What do you think will
happen after you inject PTU into the three rats?
4
Calculate the oxygen consumption per hour for this rat using the following equation.
ml O consumed/1 minute x 60 minutes/hour = ml O /hour
Enter the oxygen consumption per hour.
You answered: 426 ml O /hr.
1
2 2
2
Now that you have calculated the oxygen consumption per hour for this rat, you can
calculate the metabolic rate per kilogram of body weight with the following equation (note
that you need to convert the weight data from grams to kilograms to use this equation).