Why are the bones of the wrist and vertebrae more vulnerable to the effects of osteoporosis than the long bones of the femur or humerus?
The irregular bones do not have the concentric pattern or strength of compact bones found in long bone shafts. The irregular bones have more of a honey comb structure that shows the effects of thinning more dramatically than compact bone. The bones of the lower back bear a lot of downward and upward forces and may compress if the structure is not dense.
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Several well-defined cancers have a clearly established genetic inheritance based on mutations in a single gene.
Answer the following statement true (T) or false (F)
Athletes need greater quantities of which minerals?
A) sodium and potassium B) sodium and phosphorus C) magnesium and sodium D) copper and magnesium
When fatty acids become oxidized, the chemical structure is altered, creating the off smell and flavors characteristic of ________ food
A) unoxidized B) saturated C) radical D) rancid
If a person has "essential hypertension," the cause is:
A) unknown. B) excessive sodium intakes. C) excessive potassium intakes. D) obesity. E) lack of exercise.