The pituitary communicates with the ovaries by sending hormones through the bloodstream â first hormones that cause the egg to mature, and then hormones that trigger ovulation. But when a woman is stressed, other hormones are released in the brain, which can bungle the hormone cycle.
seasick adjective. âº âvomiting or having the âfeeling you will âvomit because of the âmovement of the âship you are âtravelling in: I was/âfelt seasick, so I went up on âdeck for some âfresh âair. seasickness noun [U] uk us /-ËsÉªk.nÉs/. noun [U] uk us /-ËsÉªk.nÉs/.
echinoderm. n. 1. (Animals) any of the marine invertebrate animals constituting the phylum Echinodermata, characterized by tube feet, a calcite body-covering (test), and a five-part symmetrical body. The group includes the starfish, sea urchins, and sea cucumbers.ny of various invertebrate sea animals having a hard spiny outer covering, an internal skeleton, and a radially symmetrical body. Starfish, sea urchins, and sea cucumbers are echinoderms.