Which of the following lymphoid organs functions at peak level during youth?
A) Peyer's patches
B) lymph nodes
C) thymus
D) spleen
E) tonsils
C
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A physiological ________ is a difference in chemical concentration, electrical charge, physical pressure, temperature, or other variables between one point and another.
A. membrane B. feedback loop C. barrier D. imbalance E. gradient
The meninx composed of a thin layer of delicate areolar connective tissue that follows every contour of the brain surface is the
A. pia mater. B. subdural layer. C. periosteal layer. D. arachnoid mater. E. dura mater.
Which medical imaging technique would be most useful for revealing a tumor in the brain?
A. Radiography B. Echocardiography C. Computed tomography (CT) scan D. Sonography E. Either a CT scan or sonography would be appropriate.