Which of these bones does not contribute to the region known as the pterion?
A. Frontal
B. Temporal
C. Occipital
D. Parietal
E. Sphenoid
Answer: C
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In an acidic solution, ________.
A. the OH- ion concentration is greater than the H+ ion concentration B. the H+ ion concentration is less than the OH- ion concentration only if the solution is buffered C. the H+ ion concentration is equal to the OH- ion concentration D. the OH- ion concentration is less than the H+ ion concentration
The fetal shortcut from the right atrium to the left atrium is the
A. ductus arteriosus. B. foramen ovale. C. umbilical artery. D. ductus venosus. E. umbilical vein.
When an infection is present in the body the lymph nodes may _____.
a. contract b. swell c. produce more lymph d. increase immunity
Which of the following would explain the loss of certain sensations from the skin of the posterior region of the upper limb?
A. One or more dorsal roots in the cervical region of the spinal cord have been damaged. B. One or more ventral roots in the cervical region of the spinal cord have been damaged. C. One or more dorsal roots in the thoracic region of the spinal cord have been damaged. D. One or more ventral roots in the thoracic region of the spinal cord have been damaged.