In which structure does fertilization usually occur?
A. Urethra
B. Uterus
C. Ovary
D. Urinary bladder
E. Uterine tube
E. Uterine tube
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Conscious awareness of incoming sensory information is called
A. sensation. B. receptor. C. a stimulus. D. adaptation. E. transducer.
Which of the following statements about the action potential is false?
A) The rapid depolarization phase is caused by the entry of potassium ions. B) During the repolarization phase, sodium channels close and potassium channels open. C) During the depolarization phase, membrane potential becomes positive. D) During the hyperpolarization phase, the ion pumps re-establish the sodium and potassium concentrations across the cell membrane. E) Repolarization occurs as potassium ions leave the axon.
The blood-thymus barrier is made up of
A) immature T cells. B) mature T cells. C) macrophages. D) plasma cells. E) epithelial reticular cells.
The ________ stores excess glucose and releases it into the blood when needed
A) spleen B) small intestine C) pancreas D) liver E) stomach