Week 3

1. Body movement does not involve only muscles, it is the nervous system, muscular system and the skeletal system all working together.


2. The student should learn AT LEAST these major muscles: trapezius, biceps, triceps, pectoralis, abdominus rectus, gluteus maximus, latissmus dorsi, external oblique, quadriceps, biceps femoris (hamstring), and the gastrocnemius.


3. The types of muscles are the smooth, skeletal and cardiac The importance of the smooth muscles is they are the involuntary muscles, the diaphragm is an example, so we don't have to use all of our conscious thought time thinking about breathing and all the other necessary functions that the rest of our involuntary muscles do. The skeletal muscles do our conscious movement: walk, talk, smile, wave, etc... There is only one cardiac muscle, and that is the heart. It is unique in structure and in function: it is solely responsible for moving the blood through the body.


4. Ligaments attach bone to bone, and tendons attach the muscles to bone.


5. Minimum research: the student may say that muscles work by a nerve giving the muscle tissue an impulse, causing the muscle to contract.
   Maximum research: the student may get into more detail, even to biochemistry and say that the ions move out of the muscle, causing the muscle cells to shorten.


6. The best way to build muscle endurance is primarily exercise. Its importance is agility and survival.