This valve is found between the right atrium and the right ventricle.
A. Mitral
B. Tricuspid
C. Bicuspid
D. Semilunar
Answer: B. Tricuspid
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The colon is an organ included in which body system?
A. Gastrointestinal B. Cardiovascular C. Integumentary D. Reproductive
Amelogen is a protein that is very abundant in:
a. Cementum b. Dentin c. Enamel d. The periodontal ligament e. The pulp cavity of a tooth
Chemical buffer systems
a. respond in one to three minutes to changes in hydrogen ion concentration b. stimulate the respiratory center when acidosis occurs c. promote H+ excretion by the kidneys when acidosis occurs d. are the most powerful mechanism for regulating changes in [H+] within the body e. buffer changes in acid or base levels
Auditory "startle" reflexes originate in the:
a. precentral gyrus b. superior colliculi c. inferior colliculi d. intermediate mass