Excess hydrogen ion is eliminated from the body largely by
A) sweating.
B) the kidneys.
C) the liver.
D) the feces.
E) buffers.
Answer: B
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A) root B) body C) lunula D) cuticle E) eponychium
The oral cavity, pharynx, esophagus, and anus are lined by
A) pseudostratified ciliated columnar epithelium. B) cuboidal epithelium. C) stratified squamous epithelium. D) simple epithelium. E) simple columnar epithelium.
Which of the following are harmful or disease-causing microorganisms from which nonspecific defenses protect the body?
A) macrophages B) antibodies C) pathogens D) allergens
During birth, an infant is normally stimulated to breathe by ________
A) CO2 accumulating in the baby's blood B) prostaglandins C) an increased O2 level in the baby's new environment D) surfactant E) being spanked by the doctor