Which of the following structures produces a precursor to hormonal vitamin D, important for Ca2+ regulation?
A. Stomach
B. Heart
C. Kidney
D. Skin
Ans: D. Skin
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Stereoscopic vision results when the
A. brain interprets the images in two dimensions. B. images in both eyes are identical. C. rods of one eye are stimulated and the cones of the other eye are stimulated. D. images in the eyes are different.
A zygote is
a) the same as an ovum b) another name for secondary oocyte c) a diploid fertilized ovum d) the same as polar body e) the mature ovarian (Graffia) follicle
In the brain, the outer cerebral cortex consists of gray matter, but in the spinal cord, gray matter is confined to the innermost regions
Indicate whether this statement is true or false.
What is the path of blood flow from the heart to the lung tissues and back to the heart?
A. Right ventricle ? pulmonary trunk ? pulmonary arteries ? lung tissues ? pulmonary veins ? left atrium B. Left ventricle ? aorta ? brachiocephalic artery ? lung tissues ? bronchial veins ? brachiocephalic vein ? superior vena cava ? right atrium C. Left ventricle ? aorta ? bronchial arteries ? lung tissues ? bronchial veins ? azygos vein ? superior vena cava ? right atrium D. Right ventricle ? brachiocephalic arteries ? lung tissues ? brachiocephalic veins ? inferior vena cava ? left atrium