Bacteria in the blood can be prevented entry to the fluids surrounding the brain. Which cells are most responsible for preventing bacteria from entering the fluids of the brain?
A) satellite cells
B) astrocytes
C) Schwann cells
D) oligodendrocytes
B
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In an adult heart, the previous location of the foramen ovale is marked by a depression called the ________.
Fill in the blank(s) with the appropriate word(s).
Why is ventricular fibrillation fatal?
A) Ventricular fibrillation is fatal because the ventricles quiver and do not relax long enough to be filled with blood by the atria. B) Ventricular fibrillation is fatal because the ventricles quiver and do not pump blood to the systemic circulation. C) Ventricular fibrillation is fatal because the ventricles do not relax long enough for the coronary vessels to fill with blood for the coronary tissue to receive oxygen and nutrients. D) Ventricular fibrillation is fatal because the heart is beating to an ectopic pacemaker and the rhythm is irregular. E) Ventricular fibrillation is fatal because the heart rate slows significantly and blood flow and pressure decreases.
If a person fell down the steps and then developed pain down his anterior thigh into the knee, which of the following spinal nerves was probably damaged?
A. obturator B. femoral C. tibial D. common fibular (peroneal) E. pudendal
Answer the following statements true (T) or false (F)
1. 2. 3. 4. 5.