Where should most of the potassium ions be located when a muscle cell is at rest?
A) sarcoplasmic reticulum B) cytosol of the muscle cell
C) extracellular fluid D) transverse tubules (T-tubules)
Answer: B
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Transverse or spinous process fractures may result from which of the following?
A. extremely forceful contraction of the attached muscles B. the sustenance of a hard blow to the back of the spine C. both A and B D. none of the above
What law of thermodynamics states that energy can be neither created nor destroyed?
a. first b. second c. third d. fourth e. fifth
To accommodate for their high surface to volume ratio, smaller mammals
a. reduce the size of each alveolus. b. increase alveolar density. c. increase the density of capillaries used in gas exchange. d. reduce the size of each alveolus and increase alveolar density. e. all of these.
The portion of the adult brain that includes the cerebral peduncles, superior colliculi, and inferior colliculi is derived from which secondary brain vesicle?
A. Diencephalon B. Metencephalon C. Mesencephalon D. Telencephalon E. Myelencephalon