Cloze 8/26/2021

Skeletal muscle tissue can make up as much as _____ percent of a person's body weight?

• 10%

• 50%

• 90%

• 20%

The amount of tension a muscle can produce is the result of the:

• Muscle size (i.e. cross-sectional area) along with the type and number of motor units activated

• Neurological signal (intensity and frequency) from brain to muscle

• Strength and point of tendon insertion and joint angle

• All of the above

The most commonly accepted theory of muscle growth states that _____ within a muscle activate a(n) ______ process that causes dormant stem cells to build and regenerate muscle tissue

• Microscopic tears; Inflammatory

• Contractions; Inhibitory

• Stress; Cytokines

• Tension; Neurological

Which of the following are NOT an important factor contributing to muscle growth:

• Nutrition, especially protein intake

• Recovery, especially rest and sleep

• Hormones, especially thyroid

• Progressive mechanical overboard, especially eccentric contractions

Everyday activities do not produce significant muscle growth because:

• Muscle growth requires going to the gym and lifting weights

• The body adapts to repeated demands so that movements performed regularly often do not produce enough stress to cause hypertrophy

• Cytokines are released during everyday activities that inhibit muscle regeneration

• The nervous system cannot respond by recruiting more muscle fibers to generate hypertrophy

Many people perform resistance training but never see appreciable changes in their muscle size. Can you think of factors that may contribute to the large variation in exercise-induced muscle growth? How might these factors affect the body’s ability to rebuild tissue?

How many muscles are in the human body?

• 650 plus more

• less than 200

• 600

• 500

MUSCLES

• need your attention daily

• don't mean much to our overall health

• are just there if we need to move

• have become obsolete as we evolve