Which of the following best explains why multiple exercises are needed to improve muscular strength and endurance throughout the body? a. push-ups don't exercise leg muscle groups. b. different exercises are needed to improve different muscle groups. c. weight lifting is more important for muscle strength than endurance. d. not all muscle groups can be exercised simultaneously.

What are the functions of the various parts of the neuron? how are messages transmitted through the nervous system? make sure that your response demonstrates that you understand how this works!

The breakdown of peptides into amino acids is an example of . the release of insulin after eating a large meal is an example of .

A72-year-old woman fell in her bathtub and fractured her hip. in viewing the fracture, x-ray revealed osteoporotic changes in her bone as well. after reduction of the fracture, and immobilizing the bones with internal pins, what type of exercise would the doctor have advised her to do as soon as she was able in addition to prescribing calcium supplements to improve her bone mass?