The most basic level of the body's structure is the

In the timetable of human prenatal development from 1 to 6 weeks, what is stage 1?

A. zygote divides C. early blastocyst B. morula D. fertilization

Which types of devices/techniques should be used to monitor the oxygenation status of patients undergoing hyperbaric oxygen therapy?

1. Transcutaneous monitoring 2. Arterial blood gas monitoring 3. End-tidal CO2 monitoring 4. Spirometer a. 1 and 2 c. 2 and 3 b. 1 and 4 d. 3 and 4