A major effect of long-term weightlessness involves the loss of bone and muscle mass. Without the effects of gravity, skeletal muscle is no longer required to maintain posture and the muscle groups used in moving around in a weightless environment differ from those required in terrestrial locomotion.
Marina /ma-ri-na/ [3 sylls.] as a girls' name is pronounced mah-REE-nah. It is of Latin origin, and the meaning of Marina is from the sea. From marine. A saint's name. Shakespeare gave the name to Pericles' daughter in his play Pericles, Prince of Tyre.
Russian Meaning: The name Marina is a Russian baby name. In Russian the meaning of the name Marina is: From the sea. Shakespearean Meaning: The name Marina is a Shakespearean baby name. In Shakespearean the meaning of the name Marina is: Pericles, Prince of Tyre' Daughter to Pericles and Thaisa.