Sheaths of ________ cells often enclose the larger axons outside of the brain and spinal cord.
Fill in the blank(s) with the appropriate word(s).
Schwann
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Which of the choices below is not a method by which the cells of the renal tubules can raise blood pH?
A) by secreting hydrogen ions into the filtrate B) by reabsorbing filtered bicarbonate ions C) by producing new bicarbonate ions D) by secreting sodium ions
A hormone is a secreted molecule that is carried in the bloodstream to where it acts on
target cells that bear specific receptors for that hormone. Indicate whether the statement is true or false
Which of the following respiratory volumes and capacities has the lowest volume?
A. Expiratory reserve volume (ERV) B. Tidal volume (TV) C. Inspiratory reserve volume (IRV) D. Functional residual capacity (FRC) E. Residual volume (RV)
A structure that allows the middle ear to communicate with the nasopharynx is the
A) pinna. B) vestibular duct. C) tympanic duct. D) auditory tube. E) external auditory canal.