Question

What will happen if an injection of propyltHIOuracil is given to an otherwise normal animal?

1) Increase in heart rate
2) Decrease in heart rate
3) Increase in blood pressure
4) Decrease in blood pressure

Answer 1

If propylthiouracil is given to a normal animal, it will likely cause a decrease in heart rate, as it is used to treat hyperthyroidism by inhibiting thyroid hormone production.

Step-by-step explanation:

When an injection of propylthiouracil (PTU) is given to an otherwise normal animal, the most likely outcome is a decrease in heart rate. Propylthiouracil is a medication primarily used to treat hyperthyroidism, which is a condition characterized by an overproduction of thyroid hormones. These hormones increase metabolism and consequently can raise heart rate and blood pressure. By inhibiting the production of thyroid hormones, PTU can lead to a decrease in heart rate.