muscle fiber striation fascicle voluntary muscle involuntary muscle myofibril myosin actin

Z line sarcomere tendon origin insertion flexor extensor muscle fatigue oxygen debt figure 45-9

Skeletal muscle tissue is shown in these diagrams of some of the major muscles in the human body.

Careers in BIOLOGY

Certified Athletic Trainer

Job Description A certified athletic trainer (ATC) is a highly educated and skilled professional who specializes in athletic health care. Certified athletic trainers must have a bachelor's degree, usually in athletic training, health, physical education, or exercise science. In addition, an ATC must pass a certification exam. The job includes the prevention, identification, evaluation, treatment, referral, and rehabilitation of sports-related injuries.

Focus on Certified Athletic Trainer

In high school, Veronica Ampey was interested in science, medicine, rehabilitation, and community service. Today, she has found a career that brings together all of these interests and her love for sports. "I like the fact that I am not tied to a desk," says Ampey. "I get paid to watch athletes practice and compete."

Ampey works as an ATC at a small high school in Washington, D.C. Ampey says "The bonus is using my education and experience to address incidents when they occur. Additionally, there is a great deal of satisfaction in seeing someone you've worked with return to full athletic participation."

Education and Skills

• High School—at least three years of science courses and four years of math courses.

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