The opening in the diaphragm that the esophagus passes through is (the)
A) hilum.
B) hiatus.
C) cardiac sphincter.
D) crus.
E) None of the answers are correct.
B) hiatus.
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The primary germ layer that gives rise to the epidermis, brain, and spinal cord is the __________.
Fill in the blank(s) with the appropriate word(s).
Clinicians often describe the location of an organ or pain in relation to its location or area within the abdominopelvic cavity. The abdominopelvic cavity can be divided into _____ by placing imaginary horizontal and vertical lines through the umbilicus.
a. Nine regions b. Four quadrants c. Sixteen sections d. Two halves e. Six areas
The atomic mass of a proton is
A. 2 atomic mass units. B. 1 atomic mass unit. C. -1 atomic mass unit. D. 0 atomic mass units.
The heart is ________ to the lungs.
A. lateral B. superior C. dorsal D. medial