Which statement does NOT apply to the distal tubule?
a. Secretion and reabsorption can take place
b. It secretes K+
c. It secretes H+
d. It secretes Na+
Answer: d. It secretes Na+
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Fever is caused by neurotransmitters released by pathogens.
Answer the following statement true (T) or false (F)
The roof of the oral cavity is formed by the
A) vestibule. B) hard and soft palate. C) palatal arches. D) upper labium. E) pharynx.
What is a gene?
A) A gene is a sequence of three nitrogenous bases along a DNA strand. B) A gene is a polypeptide formed by linked amino acids. C) A gene is a sequence of three nitrogenous bases along an RNA strand. D) A gene is a portion of a DNA strand that functions as a hereditary unit and codes for a specific protein. E) A gene is the sequence of tRNAs needed to form a polypeptide.
The term "primary lymphatic structure" applies
A. only to red bone marrow. B. only to lymph nodes. C. to lymph nodes and MALT. D. to the red bone marrow and thymus. E. to the spleen and lymph nodes.