The white matter of the spinal cord is mainly
A) unmyelinated axons.
B) neuroglia.
C) Schwann cells.
D) myelinated axons.
E) nodes of Ranvier.
D
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Assuming that the right and left renal arteries arise separately, generally the third vessel to branch off the abdominal descending aorta is the left renal artery.
Answer the following statement true (T) or false (F)
Which structure marks the end of the left ventricle and the entrance to the aorta?
A. Foramen ovale B. Right atrioventricular valve C. Aortic semilunar valve D. Pulmonary semilunar valve E. Left atrioventricular valve
Some rat poisons contain a toxin that blocks the liver's ability to utilize vitamin K. Animals that consume this poison would have problems with:
A) coagulation. B) erythropoiesis. C) agglutination. D) thrombolysis.
This figure shows the muscles of respiration. What muscle does number 4 indicate?
A. Scalene B. Diaphragm C. External intercostal D. Internal intercostal E. Transversus thoracis