Asked by James Nelson on Jul 04, 2024
Verified
Which of the following statements concerning the embryonic cardiovascular system is true?
A) The heart develops from four endothelial tubes.
B) Blood vessels form from blood islands.
C) An opening in the interatrial septum is called the sinus venosus.
D) The bulbus cordis becomes the sinoatrial node (the adult pacemaker) .
E) There is an opening in the interventricular septum.
Endothelial Tubes
Tube-like structures formed by endothelial cells that line the interior surface of blood vessels and lymphatic vessels.
Interventricular Septum
Wall between the ventricles of the heart.
Interatrial Septum
Wall between the atria of the heart.
- Describe the embryonic development of the cardiovascular system.
Verified Answer
BV
Beatriz ValdespinJul 10, 2024
Final Answer :
B
Explanation :
Blood vessels form from blood islands, which are clusters of angioblastic (precursor to blood vessels) cells that differentiate into endothelial cells to form the lining of blood vessels.
Learning Objectives
- Describe the embryonic development of the cardiovascular system.
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