Please answer each question. There are 25 multiple-choice questions and 5 short answer questions. Good luck!

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Which organ does the ductus venosus bypass when its sphincter is relaxed?

What do the left and right horns of the sinus venosus give rise to, respectively?

A 4-year-old boy presents with hypertension in the upper extremities and a diminished femoral pulse and pressure. Radiologic imaging reveals a postductal coarctation of the aorta. Which of the following is the most characteristic feature of this condition?

Which of the following veins drains the yolk sac (umbilical vesicle) into the embryo?

The nurse is caring for the 66 year old client who has just been diagnosed with sinus bradycardia, and needs to provide teaching about this condition. Which of the following would be the nurse’s best explanation?

In which stage of lung maturation do the lungs become highly vascularized?

When does the respiratory system complete development?