The _________ nerve carries parasympathetic fibers to the SA node.
a. hypoglossal
b. facial
c. accessory
d. vagus
Answer: d. vagus
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Which of the following correctly describes thalidomide?
A. It is a major cause of neural tube defects. B. It is a teratogen. C. It is able to cause birth defects only during the first week of pregnancy. D. It is associated with fetal alcohol syndrome. E. It is a radioactive mutagen.
The second most abundant of the lipids in the plasma membrane is/are ________.
A. cholesterol B. saturated fats C. phospholipids D. glycolipids E. triglycerides
The addition of a buffer to liquid such as blood with a pH of 7.4 causes the pH to drop to 7.0 (chemically neutral).
Answer the following statement true (T) or false (F)
Where is the arbor vitae located?
A) Cerebellum B) Medulla oblongata C) Brain stem D) Diencephalon