Several regions of the brainstem mediate autonomic responses. Which of the following is not mediated by these areas?
A) salivation
B) defecation
C) pupillary constriction
D) blood pressure
Answer: B) defecation
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Which is TRUE about neuronal membrane electrical and concentration gradients at the peak of the action potential?
A. The concentration gradient for Na+ is in a direction that would tend to move it out of the cell. B. The concentration gradient for K+ greatly increases compared to at rest. C. The concentration gradient for K+ is in a direction that would tend to move it into the cell. D. The electrical gradient for Na+ is in a direction that would tend to move it into the cell. E. The electrical gradient is in a direction that would tend to move K+ out of the cell.
Assume that the left ventricle of a child's heart has an EDV=90mL, and ESV=60mL, and a cardiac output of 2,400 mL/min. His SV is ________ mL/beat, and his HR is ________ bpm.
A. 30; 80 B. 150; 16 C. 80; 30 D. 40; 60 E. 16; 150
Developmentally, the most significant growth in the skull occurs
A. between the ages of 20 and 25. B. between the ages of 5 and 10. C. before age 5. D. between the ages of 15 and 20. E. between the ages of 10 and 15.
A lumbar puncture may be done to determine the effectiveness of the blood-brain barrier.?
Indicate whether the statement is true or false