The kidneys control the proper balance of hydrogen ions in the blood, thus helping to regulate ____ levels in the body
a. sodium
b. pH
c. renin
d. pressure
b
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Palytoxin is a very potent toxin from a particular seaweed in Hawaii that locks the carrier proteins of the ion pump system of the cell in an open position. What result would this have on cell function?
A) Sodium cannot enter the cells, and cell metabolism is damaged. B) The cells cannot utilize glucose. C) Phagocytosis is inhibited. D) Diffusion cannot occur. E) The cell cannot concentrate ions to achieve concentrations necessary for cell function.
Which layer(s) of the wall of the GI tract contain a nerve plexus?
A. Muscularis only B. Adventitia only C. Submucosa and muscularis D. Mucosa and muscularis E. Mucosa and serosa
Which type of receptor responds to physical deformation of its cell membrane?
A. Mechanoreceptors B. Photoreceptors C. Thermoreceptors D. Chemoreceptors
During days 1-5 of the uterine cycle, there is a high level of female sex hormones in the body.
a. true b. false