What is the correct pathway of development of the cerebellum?
A) neural tube, forebrain, telencephalon, cerebellum
B) neural tube, hindbrain, metencephalon, cerebellum
C) neural tube, diencephalon, cerebellum
D) neural tube, midbrain, mesencephalon, cerebellum
Answer: B
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If there is a stroke in the motor portion of the left side of the brain, it affects muscles of the right side of the body. Why?
A. The fibers of the corticospinal tracts are ipsilateral. B. The fibers of the corticospinal tracts are contralateral. C. The fibers of the corticospinal tracts are unilateral. D. The fibers in the motor tracts do not decussate. E. The fibers of the tectospinal tracts are contralateral.
Conscious initiation of muscle contraction is controlled by
a. the spinal cord b. the brain stem c. the cerebral cortex d. the thalamus e. none of the above
In hemolytic disease of the newborn,
A. antibodies from the fetus cross the placenta and affect the mother. B. fibrin is hydrolyzed. C. hemolysis of white blood cells may occur. D. the mother frequently dies during childbirth. E. antibodies from the mother cross the placenta and affect the fetus.
________ are the fluid-filled spaces in which the osteocytes of bone reside.
A. Trabeculae B. Lamellae C. Canaliculi D. Lacunae