Erythropoietin
A. is produced by the red bone marrow.
B. is secreted by the kidney.
C. is found both in the plasma and inside red blood cells.
D. inhibits the production of erythrocytes.
E. is produced in response to increased blood pressure.
Answer: B
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Projection tracts
A. extend between the right and left cerebral hemispheres. B. link the cerebral cortex to the caudal brain regions and the spinal cord. C. connect different regions within a lobe. D. connect different regions of the cerebral cortex within the same hemisphere. E. connect a region of one lobe with another lobe in the same hemisphere.
. This figure shows an example of regulation of hormone secretion by a negative feedback loop. The large box labeled 1 represents the initial stimulus. Which could be the initial stimulus for this pattern of regulation?
A. High blood calcium level B. Low body temperature C. Low blood sugar level D. High WBC (white blood cell) count E. Low RBC (red blood cell) count
The clear gel that usually surrounds cells is called interstitial fluid.
Answer the following statement true (T) or false (F)
The only lymphatic organ(s) with afferent lymphatic vessels is(are) the ________
A) lymph nodes B) thymus C) red bone marrow D) tonsils E) spleen