Valve between a ventricle and an artery
A. semilunar
B. atria
C. ventricles
D. tricuspid valve
Answer: A. semilunar
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If a patient becomes dehydrated, the percentage of plasma in a centrifuged sample of his or her blood would likely
A. decrease. B. increase. C. not change.
The functional units of DNA that contain the instructions for making one or more proteins are
A) chromosomes.
B) genes.
C) ribosomes.
D) codons.
E) RNA.
The location of the testes and epididymides in the scrotum
A. allows more room for other organs in the abdominal cavity. B. keeps these organs close to the penis. C. provides a temperature that is suitable for normal sperm development. D. keeps them isolated from the accessory glands of the system. E. helps to protect them.
This epithelium, located in the respiratory tract, is equipped with __________ on its free surface.
Fill in the blank(s) with correct word.