Scout radiographs generally require the radiographer to use a horizontal x-ray beam to acquire a lateral cervical spine image.?

In humans, milk secretion from the mammary glands is stimulated by:

A. insulin B. vasopressin C. prolactin D. thymosin

Which of the following statements are true regarding a capnogram? ?            I. It is a direct measurement of PCO2 eliminated by the lungs.            II. It is an indirect measurement of PCO2 eliminated by the lungs.            III. It is an indirect measurement of PvCO2.            IV. It is a direct measurement of PaCO2. ?

A. II and IV only B. II and III only C. I and III only D. I and IV only