NURS 2055 FINAL EXAM LATEST
UPDATE WITH ACTUAL
QUESTIONS AND CORRECT
ANSWERS RATED A+
Pathophysiology of asthma - ANSWER >>>>>Airway
inflammation or airway hyper-responsiveness
early phase response in asthma - ANSWER
>>>>>Bronchospasm 30-60 minutes after trigger exposure
Late phase response in asthma - ANSWER >>>>>Primarily
inflammation; peaks in 5-12 hours
Chronic obstructive pulmonary disorder (COPD) - ANSWER
>>>>>Disease state characterized by airflow limitation
Cystic fibrosis - ANSWER >>>>>Autosomal recessive , multi
system disease with altered function in exocrine glands of
lungs, pancreas, sweat glands
Automaticity - ANSWER >>>>>Ability to initiate an impulse
spontaneously and continuously
,Contractility - ANSWER >>>>>Ability to respond mechanically
to an impulse
Conductivity - ANSWER >>>>>Ability to transmit an impulse
along a membrane in an orderly manner
Excitability - ANSWER >>>>>Ability to be electrically
stimulated
Autonomic nervous system control of the heart - ANSWER
>>>>>-rate of impulse formation
-speed of conduction
-strength of contraction
Parasympathetic nervous system control of the heart -
ANSWER >>>>>(Right and left vagus nerve)
-decrease rate
-slows impulse conduction
-decreases force of contraction
Sympathetic nervous system control of the heart - ANSWER
>>>>>-increases rate
-increases force of contraction
, Sinoatrial (SA) node - ANSWER >>>>>Primary pacemaker,
initiates impulse that is normally conducted through left and
right atria; 60-100 bpm
Atrioventricular (AV) node - ANSWER >>>>>Receives impulse
from SA node and delays relays of the impulse to the bundle of
His, allowing time for the atria to empty their contents into the
ventricles before the onset of ventricular contraction
Bundle of His (AV bundle) - ANSWER >>>>>Receives impulse
from AV node and relays it to the right and left bundle
branches; 40-60 bpm
Right and left bundle branches - ANSWER >>>>>Receives
impulse from bundle of His and relays it to Purkinje fibers
Purkinje fibers - ANSWER >>>>>The Purkinje fibers are
specialized conducting fibers composed of electrically excitable
cells. Receives impulse from bundle branches and relays it to
ventricular myocardium; 20-40 bpm
P wave - ANSWER >>>>>Atrial depolarization; 0.06 - 0.12
seconds
PR segment - ANSWER >>>>>Time taken for impulse to
spread through atria; 0.12-0.20 seconds
UPDATE WITH ACTUAL
QUESTIONS AND CORRECT
ANSWERS RATED A+
Pathophysiology of asthma - ANSWER >>>>>Airway
inflammation or airway hyper-responsiveness
early phase response in asthma - ANSWER
>>>>>Bronchospasm 30-60 minutes after trigger exposure
Late phase response in asthma - ANSWER >>>>>Primarily
inflammation; peaks in 5-12 hours
Chronic obstructive pulmonary disorder (COPD) - ANSWER
>>>>>Disease state characterized by airflow limitation
Cystic fibrosis - ANSWER >>>>>Autosomal recessive , multi
system disease with altered function in exocrine glands of
lungs, pancreas, sweat glands
Automaticity - ANSWER >>>>>Ability to initiate an impulse
spontaneously and continuously
,Contractility - ANSWER >>>>>Ability to respond mechanically
to an impulse
Conductivity - ANSWER >>>>>Ability to transmit an impulse
along a membrane in an orderly manner
Excitability - ANSWER >>>>>Ability to be electrically
stimulated
Autonomic nervous system control of the heart - ANSWER
>>>>>-rate of impulse formation
-speed of conduction
-strength of contraction
Parasympathetic nervous system control of the heart -
ANSWER >>>>>(Right and left vagus nerve)
-decrease rate
-slows impulse conduction
-decreases force of contraction
Sympathetic nervous system control of the heart - ANSWER
>>>>>-increases rate
-increases force of contraction
, Sinoatrial (SA) node - ANSWER >>>>>Primary pacemaker,
initiates impulse that is normally conducted through left and
right atria; 60-100 bpm
Atrioventricular (AV) node - ANSWER >>>>>Receives impulse
from SA node and delays relays of the impulse to the bundle of
His, allowing time for the atria to empty their contents into the
ventricles before the onset of ventricular contraction
Bundle of His (AV bundle) - ANSWER >>>>>Receives impulse
from AV node and relays it to the right and left bundle
branches; 40-60 bpm
Right and left bundle branches - ANSWER >>>>>Receives
impulse from bundle of His and relays it to Purkinje fibers
Purkinje fibers - ANSWER >>>>>The Purkinje fibers are
specialized conducting fibers composed of electrically excitable
cells. Receives impulse from bundle branches and relays it to
ventricular myocardium; 20-40 bpm
P wave - ANSWER >>>>>Atrial depolarization; 0.06 - 0.12
seconds
PR segment - ANSWER >>>>>Time taken for impulse to
spread through atria; 0.12-0.20 seconds
