What is the effect of renin?
A. It inhibits thirst.
B. It stimulates sodium excretion.
C. It raises blood pressure.
D. It lowers blood pressure.
E. It leads to increased urine volume.
C. It raises blood pressure.
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Erection in the male is controlled by the _____ nervous system, while ejaculation is controlled by the _____ nervous system.
A. voluntary; sympathetic B. voluntary; parasympathetic C. parasympathetic; sympathetic D. sympathetic; parasympathetic
Air consists of about 78.6% nitrogen, 20.9% oxygen, 0.04% carbon dioxide, and 0.5% water. At sea level, (760 mmHg) what is the PCO2?
A) 0.3 mm Hg B) 3.7 mm Hg C) 159 mm Hg D) 597 mm Hg
Study of general form and superficial anatomical markings is called ________ anatomy.
Fill in the blank(s) with the appropriate word(s).
The ________ of a sound stimulus is interpreted as its pitch and measured in hertz, whereas its ________ is the amplitude of the sound waves and is measured in decibels.
A. frequency; loudness B. loudness; frequency C. timbre; loudness D. frequency; timbre