Final answer:
Estrogens are the class of hormones that are usually found more in females, and they play important roles in various aspects of female reproductive physiology.
Step-by-step explanation:
Estrogens are a class of predominantly female sex hormones that play important roles in the development and growth of the female reproductive tract, secondary sex characteristics, the female reproductive cycle, and the maintenance of pregnancy. They are secreted by exocrine system cells, tissues, and organs that secrete substances directly to target tissues via glandular ducts.