All endocrine structures develop from ________ tissue.
A) muscle
B) epithelial
C) connective
D) neural
E) None of the answers are correct.
B) epithelial
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An individual water molecule contains ______ atoms and enters into ______ hydrogen bonds with other water molecules.
A. two; two ?B. three; two ?C. three; three ?D. three; four ?E. three; six
The beta cells of the pancreas produce insulin, a protein-based hormone. Which of the following organelles would be found in higher levels in the beta cells?
A) microvilli B) ribosomes C) mitochondria D) lysosomes
Which part of the brainstem serves as a bridge for motor tract to the cerebellum?
A. Pons B. Reticular formation C. Medulla oblongata D. Midbrain
Blood returning from the systemic circuit enters the
A) left atrium. B) left ventricle. C) right atrium. D) right ventricle.