Regarding the visual pathway, axons from the entire population of which cells converge on the optic disc and proceed as the optic nerve?
A) amacrine cells
B) rods and cones
C) bipolar cells
D) ganglion cells
E) horizontal cells
D) ganglion cells
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What is the function of the enzyme ATPase?
A. Breakdown of ATP B. Synthesis of ATP C. Conversion of ADP to ATP D. Transfer of energy from ATP to CP
Which of the following is involved in the regulation of thyroid hormone levels?
A. Positive feedback mechanisms B. Blood Ca2+ levels C. PTH (parathyroid hormone) levels D. Thyroid-stimulating hormone from the anterior pituitary E. Thyroglobulin in thyroid follicles
Gas exchange between the air and the blood takes place in the ________.
Fill in the blank(s) with the appropriate word(s).
In the ECG pattern, the P wave is soon followed by the P-Q segment, which represents
A. atrial diastole. B. ventricular diastole. C. atrial systole. D. atrial repolarization. E. ventricular systole.