Which vitamins are considered "antioxidant vitamins?" Why is this role so important?
What will be an ideal response
Vitamins C, E, and beta carotene (a provitamin) are antioxidants that inactivate oxygen free radicals. Free radicals damage cell membranes, DNA, and other cell structures. They also contribute to the formation of atherosclerotic plaque. Antioxidant vitamins may also decrease cancer risk, delay aging, and decrease the risk of cataract formation.
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The oldest definite primates, adapids and omomyids, are classified as early __________.
A) cercopithecines B) hominins C) prosimians D) anthropoids
Before beginning orthodontic treatment, a patient may have her wrist and hand x-rayed to determine her stage of growth. What feature of the long bones will the orthodontist use to assess this?
A. Spongy bone B. Osteon C. Periosteum D. Compact bone E. Epiphyseal plate
In the following hysterosalpingogram, the arrows indicate the:
A) uterine arteries. B) uterine tubes. C) mesovarium. D) round ligaments. E) ureters.
The adrenal medulla produces
A) androgens. B) glucocorticoids. C) mineralocorticoids. D) catecholamines. E) corticosteroids.