the presence of ________ in blood or urine is a reliable indication of pregnancy.
A) estrogen and progesterone
B) luteinizing hormone
C) human placental lactogen
D) human chorionic gonadotropin
E) relaxin
D) human chorionic gonadotropin
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The atrioventricular bundle (of His) originates at the sinoatrial node.
a. true b. false
Pain receptors
A. adapt rapidly. B. are among the most specialized receptors. C. respond to factors that can damage tissue. D. are widely distributed in the brain.
Prostate cancer:
A) is characterized by a softening of the prostate that can be felt during a digital rectal exam. B) is best identified rectally when the patient has a full bladder. C) often metastasizes to the testes. D) is conclusively identified by a positive test of the external iliac lymph nodes. E) is associated with bladder cancer.
An organ is
A. a small structure within a cell. B. a group of cells with similar structure and function. C. a structure composed of several tissue types. D. the basic structural unit of all living organisms. E. a group of molecules with a common set of functions.