Microscopic examination of a frozen tissue specimen is an application of which of the following disciplines?
A. Histology
B. Radiology
C. Physiology
D. Gross anatomy
E. Regional anatomy
Answer: A
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Which is TRUE about the Na+, K+ ATPase pump in neurons?
A. It maintains an electrical gradient at the equilibrium potential of K+. B. It pumps 3 Na+ ions into the cell for every 2 K+ ions it pumps out. C. It transports equal numbers of sodium and potassium ions with each pump cycle. D. It maintains a concentration gradient for K+ such that diffusion forces favor movement of K+ into the cell. E. It generates a small electrical potential such that the inside is made negative with respect to the outside.
Gluconeogenesis is stimulated by decreased levels of
A. insulin. B. glucagon. C. epinephrine. D. growth hormone. E. glucocorticoids.
In the centrifuged sample of blood illustrated, which number indicates the layer containing water, plasma proteins, nutrients, and waste products?
A. 1 B. 2 C. 3 D. None of the numbers indicate that component of blood.
Which of the following is true about paranasal sinuses?
A) Paranasal sinuses open into the oral cavity. B) Paranasal sinuses enhance the resonance of the voice and lighten the skull. C) Paranasal sinuses contain passages acting as one-way valves. D) Paranasal sinuses are found in maxillary, ethmoid, and lacrimal bones.