A hormone (from Greek á½ÏÎ¼Î®, impetus) is any member of a class of signaling molecules produced by glands in multicellular organisms that are transported by the circulatory system to target distant organs to regulate physiology and behaviour. Eicosanoids â hormones derive from lipids such as arachidonic acid, lipoxins and prostaglandins. 2  Steroid â Examples of steroid hormones include the sex hormones estradiol and testosterone as well as the stress hormone cortisol.
Rating Newest Oldest. Best Answer: Bull moose shed their antlers in late autumn or early winter, after the end of the breeding season. A new set begins to grow the following spring, nourished by the covering of furry skin known as velvet.
Members of the deer family are unique because they shed their antlers every year. Horns, in contrast, remain permanently affixed to the skull. (The American pronghorn antelope sheds its horn sheaths each year, but the bony horn cores remain in place) In the wild in Maine, only deer and moose grow antlers. Antlers have a covering of living skin called velvet.