In the following coronal MRI through the lower head and neck, the arrow points to the:
A) vestibule.
B) piriform recess.
C) trachea.
D) vallecula.
E) retropharyngeal space.
Ans: B
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Nutrient-rich blood from the digestive tract comes to the liver by way of the
A. hepatic artery. B. hepatic portal vein. C. hepatic vein. D. inferior vena cava. E. celiac trunk.
The figure illustrates a cross section of the spinal cord. Which structure is indicated by "D"?
A. Ventral root B. Dorsal root ganglion C. Dorsal root D. Spinal nerve E. Central canal
Telophase occurs when the chromosomes line up in the center of the cell
Indicate whether the statement is true or false.
What is the role of acetylcholinesterase?
A) act as a transmitting agent B) amplify or enhance the effect of ACh C) destroy ACh a brief period after its release by the axon endings D) stimulate the production of serotonin