Put these phases of the cardiac cycle in the correct order.
1. opening of the semilunar valves
2. isovolumic contraction
3. beginning of atrial systole
4. closure of the AV valves
5. completion of ventricular filling
6. beginning of ventricular systole
7. ventricular relaxation
8. ventricular ejection
A) 3, 5, 6, 4, 2, 1, 8, 7
B) 3, 2, 6, 1, 4, 5, 8, 7
C) 3, 2, 6, 4, 5, 8, 7, 1
D) 4, 5, 1, 2, 7, 8, 3, 6
E) 3, 5, 6, 1, 8, 4, 2, 7
A) 3, 5, 6, 4, 2, 1, 8, 7
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Which labeled structure shown in the diagram is a remnant of fetal circulation that is not directly involved in adult circulation?
a) A b) B c) H d) D e) E
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a. synapsis b. chiasmata c. centromere d. tetrad