From the Menstrual Period to Ovulation (the details you may not know!) When your menstrual cycle begins, your estrogen levels are low. Your hypothalamus (which is in charge of maintaining your hormone levels) sends out a message to your pituitary gland which then sends out the follicle stimulating hormone (FSH).
Medical Definition of SEASICKNESS. : motion sickness experienced on the waterâcalled also mal de mer.
on an even keel Steady, stable, balanced; even-tempered; maintaining composure or equilibrium. Keel is a nautical term for a âcentral fore-and-aft structural member in the bottom of a hullâ (Random House Diet .) which affects a vesselâs stability.omposure-steadiness of mind under stress; he accepted their problems with composure and she with equanimity. calm, calmness, equanimity. disposition, temperament-your usual mood; he has a happy disposition. aplomb, assuredness, sang-froid, cool, poise-great coolness and composure under strain; keep your cool.