What is the normal range of maximum inspiratory pressure, or MIP (also called negative inspira-tory force, or NIF), generated by adults?

Which of the following is the most direct cause of polyuria in untreated diabetes?

A) Hyperglycemia B) Hypoglycemia C) Too much insulin D) Too little insulin

What statement regarding voluntary muscles is true?

A) Voluntary muscles are primarily located on the torso. B) Voluntary muscles comprise less mass in the body than involuntary muscles. C) Voluntary muscles produce movement by extending. D) Voluntary muscles connect to the bones of the skeletal system.