Which pathogen causes influenza?

1.bacteria
2.protozoan
3.virus
4.parasite

Scientists who study the anatomy of the systems in the human body focus their studies on

Which of the following substances would you expect to find in the blood, and not in the lymph? selected answers: calcium glucose calcium glucose estrogen oxygen fatty acids water answers:

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?