In humans, separation of the cells at the two-cell state following fertilization may lead to the production of twins, which in this case would be ________.
A) dizygotic
B) identical
C) fraternal
D) of different sexes
B) identical
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All MRI contrast agents are paramagnetic or superparamagnetic.
Answer the following statement true (T) or false (F)
Factors that impact stroke volume and cardiac output include ____________________.
ion concentration hormone concentrations autonomic activity all choices are correct none of the choices are correct
________ hormones bind with an intracellular receptor to form a ________, which activates specific genes.
A. Nonsteroid; DNA-mRNA complex B. Nonsteroid; receptor-hormone complex C. Steroid and thyroid; DNA-mRNA complex D. Steroid and thyroid; receptor-hormone complex
The specialized vessels that carry blood containing releasing hormones from the brain to their target gland make up the
A. hypothalamus-pituitary portal system. B. circle of Willis. C. common jugular veins. D. hepatic portal system. E. adrenal regulatory pathway.