Decide whether each statement about hormones is true or false.

homeostasis is regulated by two systems; the nervous system and the endocrine system.

hormones released by the endocrine system are secreted through ducts.

steroid hormones bind to receptors on the surface of a cell.

hormones affect almost all cells and processes.

peptide hormones travel to the nucleus of a cell.

Even though the ostrich is a flightless bird, ostriches still possess wings that stretch approximately two meters across when fully extended. scientists speculate that when dinosaurs became extinct, some of the birds that lived during that time became land dwellers since they were able to consume the food that the dinosaurs once ate. over time, these species grew larger and heavier. eventually, the ostrich species became too big to fly. the wings found on ostriches are known as a. analogous structures. b. homologous structures. c. vestigial structures. d. symmetrical structures.