If the neural tube does not close inferiorly, ________ may result.
A. down syndrome
B. spina bifida
C. anencephaly
D. conjoined twins
Answer: B
You might also like to view...
Which of the following statements is not true?
A. The parasympathetic preganglionic fibers are long compared to sympathetic preganglionic fibers. B. There is extensive neuronal divergence in the parasympathetic system compared to the sympathetic system. C. The parasympathetic system is the craniosacral division while the sympathetic is the thoracolumbar division. D. The effects of the parasympathetic system are more local and specific than the widespread effects of the sympathetic system. E. The ganglia associated with the parasympathetic division are located near or within target organs while most of the sympathetic ganglia are near the spinal cord.
A primary oocyte surrounded by a single layer of granulosa cells is called a ______________
A. primordial follicle B. secondary follicle C. mature follicle D. corpus luteum E. corpus albicans
Which of the following is not a known cause of congenital anomalies?
A. Smoking during lactation B. Smoking during pregnancy C. Exposure to teratogens during pregnancy D. Infectious disease in the mother during pregnancy E. A genetic disorder
Chemical buffer systems are the most powerful mechanism available for defending against changes in [H+] because they respond the fastest
Indicate whether the statement is true or false