________ 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

Anatomy & Physiology

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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.

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Exposure to high altitude is a form of ischemic hypoxia

Indicate whether the statement is true or false.

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The hypothalamus exerts master control over the motor system

Indicate whether this statement is true or false.

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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.

Anatomy & Physiology