Which of the following is NOT a consequence of sickle-cell anemia?
A. Sickle-shaped red blood cells are less likely to rupture.
B. Tissue damage from decreased blood supply.
C. Sickle-shaped red blood cells can become lodged in capillaries.
D. Red blood cells take on the sickle shape when oxygen levels are low.
Answer: A
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The somatic motor association area, also called the premotor cortex, is responsible for
A) involuntary motor skills. B) subconscious, voluntary activity. C) voluntary skeletal activity. D) patterned, learned activity. E) None of the answers are correct.
The mucous blanket:
a. only covers the nose and throat b. traps dust, pollen, and other contaminants c. only covers the alveoli and bronchioles d. both B and C above
Food is prevented from entering the nasal cavity during swallowing by the ________.
A. soft palate B. tongue C. hard palate D. palatine tonsils E. epiglottis
Which germ layer are the tonsils derived from?
A. Mesoderm B. Endoderm C. Ectoderm