Answer: the physician and the patient
Under this method, a physician charges
directly for treatment services rendered to the patient and the patient is
legally responsible for the payment. While the insurance company reimburse the
patient for medical expenses incurred. This is a fee for service system where
two contracts is made, one for the contract between the physician and the
patient, and the other is between the patient and the insurance company.
The correct answer is the left atrium receives the newly oxygenated blood.
