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NURS 5315 ADV PATHO EXAM 3 SET 1|2023/24 UPDATE|GRADED A+ CA$22.50   Add to cart
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NURS 5315 ADV PATHO EXAM 3 SET 1|2023/24 UPDATE|GRADED A+
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Cardiac Blood Flow o From body o Through: Vena cavas Right atrium Tricuspid valve Right ventricle Pulmonic valve Pulmonary artery o To lungs Pulmonary vein Left atrium Mitral valve Left ventricle Aortic valve o Back to body Cardiac Anatomy The heart is the size of a clo...

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  • August 29, 2023
  • 13
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

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  • nurs 5315 adv patho exam 3 set 1202324 updategr

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  • NURS 5315 UTA
  • NURS 5315 UTA

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NURS 5315: ADV PATHO EXAM 3 SET 1
Cardiac Blood Flow - correct answer o From body
o Through:
♣ Vena cavas
♣ Right atrium
♣ Tricuspid valve
♣ Right ventricle
♣ Pulmonic valve
♣ Pulmonary artery
o To lungs
♣ Pulmonary vein
♣ Left atrium
♣ Mitral valve
♣ Left ventricle
♣ Aortic valve
o Back to body
Cardiac Anatomy - correct answer The heart is the size of a closed fist
2/3 of the heart is to the left of the midline
1/3 under the sternum
heart layers - correct answer Endocardium ( inner)
myocardium ( middle) Pericardium ( outer)
Cardiac action potential: phase 0 - correct answer rapid depolarization
Sodium influx d/t voltage-gated sodium channels opening
Cardiac action potential: phase 1 - correct answer initial repolarization of cells
voltage gated sodium channels closed
voltage gated potassium channels open
Potassium leaves cell slowly
Cardiac action potential: phase 2 - correct answer plateau phase
voltage gated calcium channels open
influx of calcium into the cell
balances potassium efflux
calcium influx triggers more calcium from sarcoplasmic reticulum > myocardial contraction
Cardiac action potential: phase 3 - correct answer Rapid Repolarization w/ potassium efflux
voltage gated potassium channels open
voltage gated calcium channels close
Cardiac action potential: phase 4 - correct answer resting membrane potential, -85 mV
High potassium permeability from the potassium channels
Potassium imbalance affect on myocardial action potentials - correct answer Hypokalemia-increased atrial preload leads to 1-3 degree blocks
Hyperkalemia-slows depolarization, leads to sunus bradycardia and junctional rhythm
Calcium imbalance affect on myocardial action potentials - correct answer Hypocalcemia-decreased contractility

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