Which chemical messenger is released by adipose tissue?
a. Neuropeptide Y
b. melanocortin
c. Leptin
d. CRH
e. Insulin
C
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The iron of the heme unit of hemoglobin is transported in the blood by the protein ________ after the aged erythrocytes are phagocytized.
Fill in the blank(s) with the appropriate word(s).
You have discovered a novel steroid hormone. You'd like to isolate its receptor as part of your next project. Where should you look first?
A. In the blood stream B. On the cell surface C. In the cytoplasm D. Any of these might be places where the receptor could be found.
The fertilization of an egg normally occurs in the uterus.
Answer the following statement true (T) or false (F)
When ________, blood flows passively into the atria and then passively into the ventricles.
A. the atria contract and the ventricles relax B. the atria relax and the ventricles contract C. both the atria and the ventricles relax D. both the atria and the ventricles contract