In the lungs, surfactant is secreted by ____ cells.?
a. beta
b. parietal
c. alveolar
d. alpha
Answer: c. alveolar
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The dilation stage of labor
A) has contractions of the uterus spread only a few minutes apart. B) includes dilation of the cervix. C) usually is short—a few minutes in length. D) occurs about an hour after the onset of true labor. E) All of the answers are correct.
Most of the terminology to name and describe body parts and their functions comes from
A) picture drawings on the cave walls of our ancestors. B) the language of hunter-gatherers. C) Latin and Greek. D) English and Italian.
Which of the following statements concerning erythrocytes is incorrect?
a. erythrocytes do not contain any organelles. b. erythrocytes may take on many different shapes. c. erythrocytes originate from the same undifferentiated pluripotential stem cells as leukocytes and platelets. d. erythrocytes are unable to utilize the O2 they contain for their own ATP formation. e. erythrocytes only live about 5 days.
Old erythrocytes are phagocytized in the
A. spleen. B. spleen and lung. C. liver. D. liver and spleen. E. lung.