Final answer:
Extra care must be taken to protect the embryo and later, the fetus, from trauma and temperature changes, particularly when patients are in positions like the lithotomy position used during childbirth or certain medical exams.
Step-by-step explanation:
Extra care must be taken to ensure that the embryo—and later, the fetus—is protected from trauma and rapid temperature changes. The amniotic fluid surrounding the embryo and fetus plays a crucial role in providing a cushioned environment. This protection is vital during a pregnancy, especially when considering the positioning of a patient for medical procedures, such as the lithotomy position, commonly used during childbirth or certain medical examinations. The lithotomy position, where the patient lies on their back with hips and knees flexed, thighs apart, and feet supported in stirrups, requires additional precautions to safeguard the embryo or fetus from potential harm.