Standing still in an elevator that suddenly lowers will stimulate receptors in the
A) basilar membrane.
B) spiral organ.
C) semicircular canals.
D) bony labyrinth.
E) utricle and saccule.
E
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The __________ layer of the dermis consists of areolar tissue.
Fill in the blank(s) with the appropriate word(s).
Select the correct statement about the neural mechanisms of respiratory control
A) The pons is thought to be instrumental in the smooth transition from inspiration to expiration. B) The dorsal respiratory group neurons depolarize in a rhythmic way to establish the pattern of breathing. C) The ventral respiratory group is contained within the pons. D) The pontine respirator group (PRG) continuously stimulates the medulla to provide inspiratory drive.
A molecule is
A. an alteration in the three-dimensional structure of a protein. B. a substance that conducts electricity when placed in solution. C. a combination of atoms held together by chemical bonds. D. a negatively charged ion. E. a positively charged ion.
A unifying feature of vertebrates is that their embryos are segmented. What feature of human anatomy reflects this primitive segmentation?
A. The symmetry of the body B. The division of the trunk region into a thorax and an abdomen C. The arrangement of the teeth in rows D. The presence of two forelimbs and two hindlimbs E. The linear arrangement of the ribs and vertebrae