Which of the following is a medical disorder in which the myelin in the CNS has been destroyed?
A) Guillain-Barré syndrome B) Multiple sclerosis
C) Muscular dystrophy D) Myasthenia gravis
B
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To complete gas exchange, ________________________________________ have thin, flexible membrane walls surrounded by a network of microscopic capillaries
Fill in the blank(s) with correct word
A suture is an example of a(n)
A) synarthrosis. B) syndesmosis. C) symphysis. D) diarthrosis. E) amphiarthrosis.
Which of the following structures is the opening that connects the atria in the fetal heart?
A) trabeculae carneae B) conus arteriosus C) foramen ovale D) aortic vestibule
Once implantation takes place the pre-embryo is divided into two general areas. Which of these two actually gives rise to the embryo?
A. Embryoblast B. Trophoblast C. Syncytiotrophoblast D. Cytotrophoblast E. Morula