Pain that is documented as caustic is described by the patient as:

Which positioning problem(s) listed result(s) in an AP-PA chest projection (lateral decubitus po-sition) with the manubrium and the fifth thoracic vertebra located at the same level?

1. A patient rotated into an RPO position 2. An AP projection obtained with the upper midcoronal plane tilted away from the IR 3. A PA projection obtained with the upper midcoronal plane tilted toward the IR 4. An AP projection obtained with the central ray angled cephalically a. 1 only b. 2 only c. 2 and 3 only d. 2, 3, and 4 only

________ is an enzyme that breaks down collagen

Fill in the blank(s) with correct word