A ___________________ is a coherent group of assumptions used to explain the relationships between two or more observable facts

M2 receptors are present on which of the following?

a. Heart, postganglionic parasympathetic nerves b. Parasympathetic ganglia, nasal submucosal glands c. Airway smooth muscle, submucosal glands d. Postganglionic cholinergic nerves, possible effect on CNS

What is the role of states in U.S. health policy?

a. Financial support for the care and treatment of the poor b. Oversight of health care practitioners and facilities c. Quality assurance d. All of the above