Tumor cells can be spread through the __________________________________________________ or __________________________________________________
Fill in the blank(s) with correct word
blood stream, lymphatic system
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The corpora quadrigemina is part of what portion of the brain?
A. Telencephalon B. Diencephalon C. Brainstem D. Thalamus E. Epithalamus
In birds, the ________ directs the egg to the cloaca
Fill in the blank(s) with correct word
Which of the following statements about energy is NOT correct?
a. Energy is subject to an input-output balance similar to that for water. b. An example of internal work is the energy expended by muscles to lift a heavy object. c. Almost 75% of nutrient energy is lost as heat and not used to do work. d. Energy is normally expressed in terms of heat energy. e. none of these.
Gonadotropic hormones are released by the ___________.
A) hypothalamus B) anterior pituitary C) interstitial cells D) ovaries E) thyroid