Physiology Percentage of T4 and T3 released from thyroid gland- A 50% T4; 50% T3 B 25% T4; 75% T3 C 80% T4; 20% T3 D 1000% T4; 0% T3 💡 Explanation Percentage of T4 and T3 released from thyroid gland- ✓ Correct Answer: C. 80% T4; 20% T3