What is the function of the converting enzyme secreted by the alveolar capillaries?
A) It makes the respiratory membrane more soluble to gases.
B) It causes an increase in the secretion of surfactant.
C) It assists in the hormonal regulation of blood volume and pressure.
D) It activates parasympathetic nervous components of the autonomic nervous system to cause alveolar smooth muscles to contract.
E) All of the answers are correct.
C) It assists in the hormonal regulation of blood volume and pressure.
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During blood vessel development, the brachiocephalic trunk is formed from the
A. umbilical arteries. B. fifth aortic arch vessel. C. umbilical vein. D. aortic sac. E. common dorsal aorta.
As the number of rows of detectors increase in a CT gantry, the number of slices obtained with each revolution of the tube also increases.
Answer the following statement true (T) or false (F)
The white matter of the spinal cord is mainly
A) unmyelinated axons. B) neuroglia. C) Schwann cells. D) myelinated axons. E) nodes of Ranvier.
Two solutions are separated by a selectively permeable membrane. If solution A has a higher concentration of a nonpermeating solute than solution B, then ________
A) the solute will pass down its concentration gradient from solution B to A B) water will pass down its concentration gradient from solution B to A C) water will pass down its concentration gradient from solution A to B D) neither the solute nor water will diffuse E) the solute will pass down its concentration gradient from solution A to B