Which cells signal the brain capillary cells to align with tight junctions forming the blood-brain-barrier?
a. neurons
b. interneurons
c. astrocytes
d. motor neurons
e. pia mater cells
C
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A hormone whose production is associated with seasonal fluctuations in day length is __________.
Fill in the blank(s) with the appropriate word(s).
If a female who is a carrier for a genetic disorder has a child with a male who is also a carrier for the same disorder, the probability that their offspring will have the disorder is ________.
A. 100% B. 50% C. 25% D. 0%
Which of the following most accurately describes the location of the heart?
a. Anterior to the sternum b. Inferior to the clavicles c. Inferior to the diaphragm d. To the right of the sternum
__________________ are parts of an animal that are used after the main source has been used
Fill in the blank(s) with correct word