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Exam & Evaluation (Animated Cardiac Development)
 
Questions: Please respond to following statements.

1 Since the ends of the primitive cardiac tube are_____, as it lengthens, it is forced to bulge and twist inside the pericardial sac.
  loose
  incomplete
  fixed
  large
2 Approximately how many days after conception does the primative tube begin to pulsate?
  10 days
  15 days
  22 days
  28 days
3 By day 24 the tube is propelling fluids.
True     False
4 Stage 10 at the Visible Embryo site, states that; about the same time that the primitive heart begins to pulsate, aggregations of cells which will form the eyes and ears become visible.
True     False
5 The division of the single chambered pump into atria and ventricles begins with growth of the________.
  septum primum
  interventricular foramen
  foramen ovale
  endocardial cushions
6 The thick muscular wall dividing the ventricles is called?
  cardiac cushion
  ventricular septum
  interventricular foramen
  ventricular plates
7 The large opening in the ventricular septum is called the ____________.
  interventricular septum
  ventricular septum
  interventricular foramen
  ventricular plates
8 By about day 33 the atrial septum begins to divide the atrium. What is another name for this structure?
  septum primum
  septum secundum
  foramen ovale
  foramen secundum
9 At the same time the atrium starts to divide, what other structures are developing?
  nostrils and hand plates
  endocardial cushions
  ventricular septum
  interventricular cushions
10 The interventricular foramen is usually completely closed by what week?
  week 4
  week 5
  week7
  week 9
11 What closes the foramen primum, and reduces the flow of blood from the right to left atrium.
  atrial septum
  septum secundum
  septum primum
  oval window
12 As the foramen primum closes it restricts oxygenated blood flow to the left atrium. What is the second opening that forms in the atrial septum called. It allows oxygenated blood to continue flowing into the left atrium?
  septum primum
  septum secundum
  foramen ovale
  foramen secundum
13 The incomplete overlap between the septum secundum and foramen secundum leaves an opening called the________. This opening allows one-way passage of blood from the right to the left atrium. (FILL IN THE BLANK)
14 Separation of the arterial from the venous system is completed when the _______________is closed.
  interventricular septum
  ventricular septum
  interventricular foramen
  ventricular plates
15 After 8 weeks of development, the embryo can be called a/an _________. (FILL IN THE BLANK)
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