The primary role of the carbonic acid-bicarbonate buffer system is
A) to buffer carbonic acid formed by carbon dioxide.
B) to buffer the urine.
C) the prevention of pH changes caused by organic and fixed acids.
D) to increase the amount of carbonic acid during ventilation.
E) to buffer stomach acid.
C) the prevention of pH changes caused by organic and fixed acids.
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Which layer of the epidermis consists of up to 30 layers of dead cells?
A. Stratum spinosum B. Stratum lucidum C. Stratum granulosum D. Stratum basale E. Stratum corneum
The brainstem is composed of what four parts?
A. Medulla oblongata, pons, midbrain, reticular formation B. Cerebrum, diencephalon, brainstem, cerebellum C. Frontal, parietal, temporal, occipital D. Neither of these answers is correct
The limbic system controls emotions and moods.
Answer the following statement true (T) or false (F)
The secretion of parathyroid hormone is controlled primarily by the
A) hypothalamus. B) pituitary gland. C) concentration of blood calcium. D) thyroid gland.