NBCRNA Memory Master questions WITH COMPLETE SOLUTIONS

What is the major inhibitory neurotransmitter in the spinal cord? correct answers Glycine. GABA is the inhibitory neurotransmitter in the CNS, glycine in the spinal cord. Where do preganglionic parasympathetic nerves originate? correct answers Craniosacral, but only cranial nerves III, VII, IX, and X. Sacral S2-S4 segments. Name the vessel rich organs and their percentage of cardiac output. correct answers Brain, kidney, liver, lungs, heart, digestive tract, and endocrine organs. Liver gets 25%, 4-5% to heart, 15% to brain, 20% to kidneys and 100% to lungs. What is normal anatomic dead space in mL/kg? correct answers 2 mL/kg What percentage of blood is found in the pulmonary circuit? correct answers 9%, or 450 mL. What does a PAO2-PaO2 gradient measure, and what does a PACO2-PaCO2 gradient measure? correct answers PAO2-PaO2 measures a right-to-left shunt. PACO2-PaCO2 gradient reflects deadspacing, but this gradient can also be increased with a shunt as well. How much O2 is carried per each gram of fully saturated Hgb? correct answers 1.34 ml What is normal O2 content of blood? correct answers 2