NUR110.
NURSING
Nurse wiseman 2026/2027 NURS
, NURS 305 Exam2 questions with correct
answers 2026/2027 Edition Graded A+
Circulation - Answer how the blood circulates
through the body
Perfusion - Answer blow flow to capillary bed to
provide O2 and nutrients for organs; delivery of O2 to tissues
Blood flow order (deoxygenated to oxygenated blood) - Answer
superior and inferior vena cava, right atrium, tricuspid
valve, right ventricle, pulmonary semilunar valve, pulmonary artery,
lungs ---- lungs, pulmonary vein, left atrium, bicuspid valve, left
ventricle, aortic semilunar valve, aorta, all the tissues of the body
Cardiac cycle: systoly - Answer correlates with
ventricular contraction and ejection, S1 (lubb), AV valves close
Cardiac cycle: diastoly - Answer relaxation and filling
of ventricles, S2 (dub), semilunar valves close, only time coronary
arteries are perfused, only time myocardium gets blood flow
,MAP (mean arterial pressure) - Answer difference
between systoly and diasoly, overall consistent, end-organ perfusion.
Normal range: >60
High distoly puts one at risk of: - Answer ischemia
and infarction of the myocardium because of the decreased blood
flow to the heart muscle
What we use to assess end-organ perfusion - Answer
Urine output; kidneys
What would we see with decreased perfusion to the myocardium -
Answer light headed, dizzy, chest pain (angina),
cyanosis/pallor, diaphoretic, cold, clammy, weak/thready pulses
What would we see with decreased perfusion to the GI tract - Answer
nausea, vomiting, abdominal pain
What would we see wit decreased perfused to the kidneys - Answer
decreased urine output
#1 SIGN TO SHOW DECREASED PERFUSION TO ORGANS
Autonomic NS consists of: - Answer
parasympathetic and sympathetic
, Regulation of blood flow: Parasympathetic - Answer
decreased HR, vasodilation (vagal response: fainting, lightheaded)
Regulation of blood flow: Sympathetic - Answer
fight or flight; increased HR, increased BP, vasoconstriction
baroreceptors - Answer aortic arch and carotids,
respond to pressure changes in blood vessels, sends signal to brain
respond to drop in O2 and increase in hydrogen ions to increase blood
flow to the brain - Answer chemoreceptors
Cardiac Output (CO) - Answer = SV x HR, normal: 5-6
L
Stroke Volume - Answer amount of blood ejected
from ventricles with every contraction
What does SV depend on - Answer contractibility,
preload (filling), after load (resistance to blood flow)
preload - Answer how blood is getting back to the
right side of the heart (venous return) and stretch of muscle fibers