Question

21. Diastasis is associated with the rapid filling of the ventricles A. True B. False

20. All blood returns to the heart by way of either the superior vena cava or the inferior vena cava. A. True B. False 19. The SA node resides primarily in the right atrial wall A. True B. False

18. Echocardiography is an invasive technique for evaluating the internal structures and motions of the heart and greater vessels A. True B. False

17. The heart of the developing human embryo begins to beat regularly early in the fourth week after fertilization. A. True B. False

16. To maintain the homeostatic level of red blood cell production, the body must supply the bone marrow with recycled iron, amino acids and bilirubin A. True B. False

Answer 1

21) False

explanation: diastasis is the middle phase of the diastole during the cycle of a heartbeat. At this phase, initial rapid passive filling of the heart's ventricles has slowed down, but before the atria contract to complete the active filling.

20) True

Explanation: Superior and inferior vena cava are the larger veins that drain blood from all parts of the body into the right atrium of the heart.

19) True

explanation: SA node lies in the right atrium of the heart near the entry of superior vena cava.

18) false

explanation: Echocardiography is a non invasive procedure that utilizes ultra sound technique.

17) False

explanation: the heart of the developing embryo begins to form at 4 weeks but begins to beat at 12 weeks ( 3 months of gestation)