Question

1. A. How much torque needs to be produced to move 60 kg (R) when the RA is 0.30 m and the FA is 0.1 meters?

b. What value could you change to decrease the torque needed to lift the SAME object.

12. a. What is the “contractile” unit of muscle called? ______________

        b. what is the non-contractile element (series elastic element) in a muscle lever system?

13. in regards to “power” which is more powerful, muscle fibers arranged in Parallel or bipennate muscles?   ___________

                Why?

14. When weight lifting with the goal of increasing strength, what physical characteristic of the muscle are you changing to bring about that increased strength? __________________

15. What is the branch of FDA that controls regulation of medical devices?   ____________

16. Which of the following statements is false?

1. A device can be an instrument or an apparatus.
2. A device can be something used to diagnose a disease
3. A device can change the chemistry of your cells
4. A device can be something that delivers a drug to your body

Answer 1

To answer A and B, I want to know what is RA and FA.

12. Contractile unit of muscle is called sarcomere. It is the smallest contractile unit of mscle fibers.

13. Bipennate muscle has fibers on both sides of tendons. When pennate muscle contract, it produce more tension than parallel muscle. Therefore, pennate is more stronger and poweful.

14. Strength training is usually related to production of lactate in muscles, a limiting factor of exercise performance.Regular exercise lead to adaptations for not to produce very much lactate.

15. Federal Food Drug & Cosmetic Act (FD&C Act) controls regulation of medical devices.

16. A. True - Device can be both machine and object made for some pupose

B. True - Device can use to diagnose the disease

C.False - Device cannot alter chemistry of cells

D. True - Device can deliver drug like syringes, nano devices etc

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