Which of the following is not true about a positive Babinski reflex?
A) normal in newborns
B) abnormal in adults
C) a sign of injury to descending spinal tracts
D) causes you to close your eyes when you sneeze
E) causes flaring of the toes when the sole is stroked
Answer: D
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During its embryological development, the autonomic nervous system forms from
A. neural tube cells. B. neural crest cells. C. both neural tube cells and neural crest cells.
Which of the following is a starting substance for making the hormones estrogen and testosterone?
a. lactose b. collagen c. DNA d. cholesterol
Since most filtered bicarbonate is reabsorbed, where does the bicarbonate come from that is used to compensate for acidosis?
A. Glutamine B. Carbon dioxide C. Carbonic acid D. Glucose
Which of the following would lead to relaxation of the precapillary sphincter?
A. decreased tissue metabolism B. decreased oxygen levels in tissue cells served by the capillary C. decreased carbon dioxide concentration in the capillary bed D. decreased lactic acid production by cells in the capillary bed E. decreased nitric acid levels