Answer:
Considering these as two questions with the same purpose of answering if they are true, or false, these would be the answers and explanations:
1. Steorid hormones are stored and then released in large quantities into the blood?, the answer would be: False. Steroid hormones, given their excitatory function, are usually not stored and simply released in large quantities into the blood steam. Rather, they will be produced as the different systems, especially the reproductive system, requires them, and will be released when nerve signals initiate the process of release of them, especially during puberty, when they are most needed, and later on, during reproductive life. But these are not released in great quantities, nor are they stored. They are produced as needed.
2. Sperm is stored and matures in the epididymis, this is True. Sperm is usually produced by the testis, the male reproductive organs per se. However, these sperm are still in need of maturation, and this they achieve in the epididymis, especially in the head and body of this organ that sits atop the testis. As the sperm matures, they move towards the tail of the epididymis, and are stored there for use.