1.highly coiled tubes in the testes where sperm is made. (2 words)
2.the external pouch that contains the testes.
3.is the fluid that carries oxygen and other elements to the tissues and carbon dioxide away from tissues through the heart and vascular system of humans (2 words)

There are two main levels of responsibility related to fitness and fire apparatus operations and preventing injuries and line of duty deaths. the first level involves personal responsibility. the second level involves

The five components of health-related fitness include cardiorespiratory fitness, muscular strength, resting heart rate, muscular endurance, and body composition cardiovascular fitness, muscle tone, muscular endurance, flexibility, and body composition calisthenics, muscular strength, muscular endurance, flexibility, and body composition cardiorespiratory fitness, muscular strength, muscular endurance, flexibility, and body composition

Arm circles are often effective dynamic stretches for swimmers because they