What is the job of a carbohydrate?

How does the endocrine system affect the body's functions? o o o o it secretes enzymes directly into the bloodstream. it secretes hormones directly into the bloodstream. it secretes enzymes through ducts to the surface of organs. it secretes hormones through ducts to the surface of organs.

Which of the follow is good way to gauge musculature endurance?

Which of these gives the best indication that a health service is based on pseudoscience?