Your 75-year-old grandmother has a small dog that does not like to have its nails clipped. As a result, the nails stay long. Since the dog is constantly jumping up and down in your grandmother's lap, he tends to scrape and cut her skin in the process. These abrasions, caused by blood vessels being damaged, are seen all over her arms. What factor is related to this problem?
A) She takes large amounts of calcium for her osteoporosis.
B) She does not get enough exercise.
C) Her blood supply is bad because of lack of exercise.
D) She smokes.
E) Her age is related to thinner tissues.
E) Her age is related to thinner tissues.
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A) osteoclasts. B) osteocytes. C) osteons. D) ossification centers. E) osteoblasts.
What are vibrissae?
A. Nasal guard hairs B. Nasal cartilages C. Cilia of the nasal mucosa D. Folds in the larynx E. Air passages between the nasal conchae
These cells are important in the secondary immune response:
1.memory cells. 2.activated T-lymphocytes. 3.natural Killer cells. 4.macrophages.
Arrange the following events in correct sequence.(1) Inflation and rigidity of erectile tissue(2) Arteries supplying blood to erectile tissue dilate(3) Blood fills erectile tissue sinusoids and compresses veins
A. 2, 3, 1 B. 1, 3, 2 C. 3, 2, 1 D. 1, 2, 3 E. 2, 1, 3