Which of these terms specifically means the intake and expulsion of air using the lungs?
a) inspiration
b) aeration
c) Ventilation
d) Oxygenation
Answer: c) Ventilation
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The letter B" in the above figure represents its
a. shell. b. mantle. c. gills. d. siphon. e. none of these
_________ is believed to be the first national park in the world.
A. Glacier National Park B. Yellowstone National Park C. Banff-Jasper National Park D. Yosemite National Park E. Great Smoky Mountains
This hormone causes the uterus to contract and the breasts to release milk.
A. androgens B. oxytocin C. estrogen D. follicle-stimulating hormone
Which of the following is a feature of an endocrine gland?
A. the product of these glands is carried into the lumen of an organ B. secretes a hormone into a gland or duct C. they do not respond to a negative feedback system D. secretes a hormone directly into the bloodstream E. characterized by the salivary glands