Of the changes listed below, which is associated with aging of the digestive system?
A. Increased perception of flavor intensity
B. Increased saliva production
C. Decreased production of intrinsic factor and less efficient absorption of vitamin B12
D. Increased production of stomach acid
E. Increased intestinal absorption of iron and calcium
Answer: C
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A) ATP B) glucokinase C) oxygen D) lactate E) pyruvate
All exchanges between mother and embryo occur ________
A) as maternal and fetal blood mix in the placenta B) across the chorionic membranes C) through the amniotic fluid D) through the allantois
The superior aspect of the pubic bones is the origin of:
A) rectus abdominis. B) external oblique. C) rectus femoris. D) internal oblique.
Melanin
A. is transferred to other cells by osmosis. B. is absent in individuals known as albinos. C. is a pigment produced by cells in the stratum corneum. D. makes the skin lighter. E. is increased with exposure to infrared light.