The largest of the paranasal sinuses is (are) located within which of the following bones?
A) frontal bone
B) ethmoid
C) sphenoid
D) nasal bone
E) maxillae
E) maxillae
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In an ECG pattern, the PQ interval indicates how long it takes for the cardiac impulse to travel from the
A. AV node to the atrial muscle fibers. B. SA node through the AV node. C. SA node to the Purkinje fibers. D. SA node to the atrial muscle fibers.
Which statement is true regarding osmosis?
A) Water is drawn toward high concentrations of solutes. B) It regulates the transport of gases from high to low concentrations. C) Solutes move from areas of high concentration to low concentration. D) The goal of osmosis is to create a natural solute gradient from high to low.
The pyrimidines found in DNA are ________ and ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following is NOT true of glial cells?
A. They deliver fuel molecules to neurons and remove the waste products of metabolism. B. They are outnumbered 10 to 1 by neurons in the nervous system. C. They are important for the growth and development of the nervous system. D. They regulate the composition of the extracellular fluid in the CNS. E. They form the myelin for axons.