Prematurely born infants sometimes experience respiratory distress due to inadequate production of surfactant.
Answer the following statement true (T) or false (F)
True
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Embryonic stem cells are said to be __________. That is, they have the ability to develop into any type of adult cell.
Fill in the blank(s) with the appropriate word(s).
The absence or inhibition of acetylcholinesterase at a synapse would lead to __________.
A. flaccid paralysis B. continued muscle contraction C. atrophy D. numbness E. muscle wasting
The pulmonary trunk receives blood from the right ventricle and conducts it toward the lung. The pulmonary trunk is a(n)
A. capillary. B. artery. C. vein.
What effect does heat have on bone?
A) It breaks done the hydroxyapatite, leaving only the organic matrix. B) It crystallizes the mineral salts into a smooth, solid surface. C) It denatures the proteins, leaving only the inorganic matrix. D) It denatures the collagen fibers and dissolves the mineral salts.