Final answer:
The ovaries are considered endocrine glands because they secrete hormones directly into the bloodstream. These hormones, such as estrogen and progesterone, play a crucial role in the reproductive system.
Step-by-step explanation:
The ovaries are considered endocrine glands. Endocrine glands secrete hormones directly into the bloodstream, rather than through a duct. The ovaries produce hormones such as estrogen and progesterone, which play a crucial role in the reproductive system.