________ exists when the immune system does not respond to normal tissues and their antigens.
A) Versatility
B) Tolerance
C) Memory
D) Specificity
E) Active immunity
B) Tolerance
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The juxtamedullary nephrons
A. have long loops of Henle. B. are found next to the renal capsule. C. have their renal corpuscles located in the medulla. D. comprise 85% of all nephrons. E. have short loops of Henle.
Exposure to high altitude is a form of ischemic hypoxia
Indicate whether the statement is true or false.
The hypothalamus exerts master control over the motor system
Indicate whether this statement is true or false.
The lymph ducts in the thoracic cavity drain into the:
A) inferior vena cava. B) junction of the brachiocephalic vein and the superior vena cava. C) junction of the internal jugular vein and subclavian vein. D) external jugular veins.