Do Now 0228 29 What is the function

Do Now: 02/28 -29 What is the function of slow fibers? What exercises build slow fibers? Why do muscles burn after extended activity? What process does this signify?

Cellular Respiration Review O Take out your questions on cellular respiration, we will review some of the most important information. O Remember, it is your job to have mastered biology standards. This should serve solely as a review.

Last Class O We discussed how muscles are used, the process of getting oxygen to the muscles, how to build muscle and how oxygen depletion affects muscles. How did we practice this? O Brief notes on ATP-ADP cycle, training muscle and anaerobic metabolism. O Lunge exploration O CYR questions # 11 -14

Today’s Objective Knowledge: O How a muscle is built O How different types of exercise effect muscles O How steroids effect muscles Skills: O Ability to identify how a muscle will react to different types of exercise

Big Idea O Knowing how to strengthen a muscle will be helpful to any of the students who participate in sports and also to any that plan on leading a healthy life-style. Knowing the risks associated with steroids will also help them to make the correct decision if they consider that option in the future.

Atrophy O Last class we talked about how to build muscle O Slow Fibers O Fast Fibers O What happens if I’m not building or sustaining muscle? O If you don’t use muscles for an extended period of time, then you will lose them. They will lose actin and myosin and become weaker, turn into fat, and degrade in a process called atrophy.

Examples of atrophy Muscle atrophy due to injury, bedridden atrophy Prisoner of war, muscle atrophy due to malnutrition

Steriods

Be Like Arnold… OSteroids work because they look a lot like testosterone and stimulate the growth of actin and myosin in the muscles. More action and myosin means stronger muscles.

Danger O However, it comes with risks: kidney problems, liver problems, baldness, sterility, acne and much more.

Practice your Knowledge. O Make a thought map of different types of exercise or lack of exercise and their effects on the body to focus on the difference between stamina and strength training. O You should include how steriods would effect each type of training.

Textbook Assignment H. W. ORead and Outline Chapter 8. 4 and 8. 8 OAnswer Check Your Recall Questions 15 -18 and 29 -31