Look up Daria in Wiktionary, the free dictionary. Daria (also written as Darya) is the female variant of the ancient name of Persian origin Darius (via Latin Darius and Ancient Greek: Î´Î±ÏÎµá¿Î¿Ï DareÄ©os from Old Persian DÄrayavauÅ¡, literally he who holds firm the good).aria is a saint of the Roman Catholic and Eastern Orthodox churches. In Modern Persian, daryÄ (Old Persian drayah-) coincidentally means sea. The name has been used extensively in Russia and other Slavic countries.
Antagonist and agonist muscles often occur in pairs, called antagonistic pairs. As one muscle contracts, the other relaxes. An example of an antagonisic pair is the biceps and triceps; to contract-the triceps relaxes while the biceps contracts to lift the arm.ntagonist and agonist muscles often occur in pairs, called antagonistic pairs. As one muscle contracts, the other relaxes. An example of an antagonisic pair is the biceps and triceps; to contract-the triceps relaxes while the biceps contracts to lift the arm.
How Muscles Work. Muscles usually work in pairs. A good example of a pair of muscles working together can be seen in the human arm. The muscle at the front of the arm is called the biceps muscle. The muscle at the back of the arm is called the triceps muscle.When the biceps muscle is working (contracted) the triceps muscle is relaxed.When the triceps muscle is contracted the biceps muscle is relaxed. This is called antagonistic action of muscles because they are always working in opposite ways.Contraction of the biceps muscle bends the arm. Contraction of the triceps muscle straightens the arm.hen the triceps muscle is contracted the biceps muscle is relaxed. This is called antagonistic action of muscles because they are always working in opposite ways. Contraction of the biceps muscle bends the arm. Contraction of the triceps muscle straightens the arm.