How many principle axes are there for the human body?
A. one
B. two
C. three
D. four
C. three
Anatomy & Physiology
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A component of an important buffer in the human body is
A) HCl. B) HCO3-. C) H2O. D) NaCl. E) H+.
Anatomy & Physiology
An excess of hormones in the blood may cause target organs to decrease the number of receptors for that hormone in a process called __________.
A. negative feedback B. receptor inhibition C. down-regulation D. positive feedback
Anatomy & Physiology
The LD50/ED50 is the mathematical expression of what value?
a. the lethal dose b. the effective dose c. the margin of safety d. the mortality dose
Anatomy & Physiology
The external urethral sphincter is composed of skeletal muscle.
Answer the following statement true (T) or false (F)
Anatomy & Physiology