Which of the following veins empty directly into the inferior vena cava?
A) left gonadal
B) hepatic portal
C) azygos
D) left adrenal
E) renal
E
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Enzymes are proteins that promote specific chemical reactions.
Answer the following statement true (T) or false (F)
In both the anterolateral pathway and the posterior funiculus-medial lemniscal pathway, the axons of the ________ neurons decussate in the CNS.
A. primary B. secondary C. tertiary D. quaternary
What is the direct source of the heart sounds in a heart beat?
A) Contraction of ventricles B) Rush of blood through the chambers C) Blood turbulence resulting from valve closure D) Electrical impulse between the SA and AV nodes
Emotional states are integrated by the ________, which generates an output that creates such respiratory variations as laughing and crying
A) VRG B) DRG C) PRG D) SRG