Which carbohydrate is also known as blood sugar?
A) sucrose
B) glucose
C) ribose
D) deoxyribose
E) cellulose
B
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Macrophages ingest invaders
Indicate whether the statement is true or false.
Where do the auditory tubes enter the skull?
A) stylomastoid foramen B) supra-orbital foramen C) foramen magnum D) foramen lacerum
Stimulation of ?1 receptors present on smooth muscle cells of blood vessels to the skin by norepinephrine results in:
A) vasodilation. B) bronchodilation. C) vasoconstriction. D) sweating.
What forms the respiratory membrane (air-blood barrier)?
A) respiratory bronchioles and alveoli B) terminal bronchioles and respiratory bronchioles C) systemic capillaries and cells of the body D) the visceral and parietal pleura E) the fused basement membranes of alveolar and pulmonary capillary walls