The first major branch of the aortic arch is the ________ branch.
Fill in the blank(s) with the appropriate word(s).
brachiocephalic trunk
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Explain why humans should avoid drinking salt water
What will be an ideal response?
Give the term for the "study of tissues."
A) cytology B) histology C) embryology D) pathology E) neurology
One motor neuron and all the muscle fibers it innervates constitute a ________ unit.
Fill in the blank(s) with the appropriate word(s).
In the sodium-hydrogen antiport system,
A. both sodium ions and hydrogen ions are transported into the tubular lumen. B. both sodium ions and hydrogen ions are transported into the tubular cell. C. sodium ions are transported into the cell; hydrogen ions are transported out of the cell. D. sodium ions are transported into the tubular lumen; hydrogen ions are transported into the cell. E. sodium ions are transported out of the cell; hydrogen ions are transported into the cell.