Exam 3 Practice Exam Flashcards
Which of the following granulocytes is active during inflammation?
Basophils
The P wave on an EKG lasts around
0.08-0.1 seconds
The contraction of the pulmonary valve can be heard in the
left side in the 2nd intercostal space
Which of the following treatments would be the next step in treating a patient with leukemia following radiation?
stem cell transplantation
What percentage of blood is taken to the GI tract for absorption?
25%
Red blood cells containing which hemoglobin subtype is abnormal
S and C
Beta 1 receptors on the sympathetic system have what type of effect?
Positive inotropic
Which of the following is most likely to be secreted if you are stranded in a hot desert?
ADH
The tunica intima is composed of
Simple squamous epithelium
What is the function of class III agents?
Block potassium channels
What is the glomerular filtration rate in males?
125 mL/min
V5 and V6 detect the function of the
anterior and lateral wall of the left ventricle
Which of the following defines the relative refractory period?
If there is a second stimulus during phase 3, the cell membrane can accept the stimulus and show a reaction to it
What percentage of sodium is reabsorbed by the proximal tubules?
67%
The “lub” sound is produced by the
closure of the AV valve
Dead red blood cells are converted to _____________ after _______ days
bilirubin; 120 days
Deficiency of folic acid/vitamin B12 is a characteristic of which of the following anemias?
Macrocytic
The pressure that exists in the ventricles during contraction is known as
Systolic pressure
Which phase of cardiac action potential through the Purkinje system is characterized by a decrease calcium conductance and an increase in potassium conductance?
Phase 3
In metabolic acidosis there is
low levels of HCO3- and high levels of H+
Conduction velocity is fastest through the
purkinje fibers because they’re thin
A second-degree AV node block is associated with
P wave w/o associated QRS
What is the function of alpha and beta globulin proteins?
Transport lipids and fat soluble vitamins
Which of the following is an angiotensin II receptor blocker?
Valsartan
Which of the following are branches of the renal artery?
Interlobar artery, Cortical artery, Arcuate artery, Radial artery
Platelets are derived from
Megakaryoblasts
What is the hematocrit level in females?
37-47%
Renin is secreted in response to
Low blood pressure
Which of the following phases is present in ventricular action potential but not in that of the SA node?
Phase 2
When the right atrium contracts and releases blood into the right ventricle it goes through the
Tricuspid valve
Closure of the common bile duct is a characteristic of which of the following?
Posthepatic jaundice
In which of the following phases is the pressure of the ventricles very low and the amount of blood in the ventricles around 140 mL?
Isovolumetric contraction
During cell respiration, the combination of CO2 and H2O in the proximal tube makes
carbonate acids
What is pulse pressure?
The difference between systolic and diastolic pressures
Which of the following are known as resistance vessels?
arterioles
What is the function of thrombocytes?
blood clotting (platelets)
Oversecretion of erythropoietin leads to
Polycythemia (polyvera)
The automaticity of the heart is defined by the
SA node
The pressure that exists in the capillaries is approximately
20 mmHG
characteristics of supraventricular arrhythmia?
deformed P wave in atrial extrasystole, short QRS in nodal extrasystole, negative P wave in nodal extrasystole, abnormal impulses through the AV node
___________ _____________ is due to the mitral valve being unable to open
mitral stenosis
A heart rate of above 200 beats per minute is defined as
flutter
Which of the following describes a positive chronotropic effect?
increase in heart rate
Which of the following granulocytes is active during parasitic or allergic reactions?
Eosinophils
Which of the following granulocytes is active during bacterial infection?
neurophils
The QRS complex on an EKG lasts around
0.06-0.1 seconds
The PR interval on an EKG lasts around
0.12-0.2 seconds
The QT interval on an EKG lasts around
0.2-0.4 seconds
The contraction of the aorta valve can be heard in the
right side in the 2nd intercostal space
The contraction of the mitral (bicuspid) valve can be heard in the
left side in the 5th intercostal space
The contraction of the tricuspid valve can be heard in the
right side in the 5th intercostal space
Which of the following would make it worse in treating a patient with leukemia following radiation?
immunosuppressants
Leukemia treatment steps
chemo, interferon-alpha therapy, radiation, stem cell transplantation
What percentage of blood is taken to the GI tract for reabsorption?
25%
What percentage of blood is taken to the kidneys for absorption?
25%
What percentage of blood is taken to the skeletal muscles for absorption?
25%
Red blood cells containing which hemoglobin subtype is normal
A
Red blood cells containing which hemoglobin subtype is sickle cell
S
chronotropic
change in heart rate
inotropic
contractility, dialation
dromotropic
change in conduction velocity
vasoconstriction
does not allow for increased heart rate
aldoesterone
sensitive to low blood pressure
ANP
sensitive to high blood pressure
ADH
sensitive to H2O
the tunica media is composed of
smooth muscle
the tunic externa is composed of
connective tissue
What is the function of class IV cidocaine agents?
block sodium channels
What is the function of class IV verapamil agents?
block calcium channels
What is the function of class II propranalol agents?
beta blockers
What is the glomerular filtration rate in females?
115 mL/min
V1 and V2 detect the function of the
lateral wall of the right ventricle
V3 and V4 detect the function of the
interventricular system
which of the following defines the effective refractory period
if there is a second stimulus during phase 1 or 2, the cell membrane can accept the stimulus and will not show a reaction to it
which of the following defines the absolute refractory period
if there is a second stimulus during phase 0, the cell membrane can not accept the stimulus or show a reaction to it
the “dub” sound is produced by the
closure of the semilunar valve
blood loss due to trauma
normocytic
iron deficiency
microcytic
destruction of bone marrow
aplastic
the pressure that exists in the ventricle during relaxation is known as
diastolic pressure
difference between systolic and diastolic
pulse pressure
Which phase of cardiac action potential through the Purkinje system is characterized by an increase in sodium conductance?
Phase 0
Which phase of cardiac action potential through the Purkinje system is characterized by a decrease in sodium conductance
Phase 1
Which phase of cardiac action potential through the Purkinje system is characterized by a increase in calcium conductance and an increase in potassium conductance?
Phase 2
Which phase of cardiac action potential through the Purkinje system is characterized by a decrease in potassium conductance
Phase 4, back to equilibrium
ECG lead 1 is between the
left arm and right arm electrodes
ECG lead 2 is between the
right arm and left leg electrodes
ECG lead 3 is between the
left arm and left leg electrodes
in metabolic alkalosis there is
high levels of HCO3- and low levels of H+
conduction velocity is slowest through the
AV node
a first degree AV node block is associated with
a PR interval that exceeds 0.2 seconds
a third degree AV node block is associated
no communication between atria and ventricle
diuretics
hydrochlorothiazide
Ca2+ channel blocker
felodipine, benidipine
ACE inhibitor
captopril, ramipril
B- adrenergic blocker
propranolol
female blood volume
4-5 liters
male blood volume
5-6 liters
what is the hematocrit level in males
42-52%
ADH is secreted in response to
highly concentrated blood
ANP is secreted in response to
high blood pressure
Phase 0, 3, and 4 are all in
SA node
characteristics of a myocardial infarction
high levels of lactate dehydrogenase and myoglobin, depressed or elevated ST segment on ECG, increase levels of troponin T
when the left atrium/left ventricle contracts and releases blood into the right ventricle it goes through the
mitral valve
when the right ventricle/lungs contracts and releases blood into the right ventricle it goes through the
pulmonary valve
when the left ventricle/body contracts and releases blood into the right ventricle it goes through the
aortic valve
hemolysis, damaged RBC’s
prehepatic jaundice
liver damage
hapatic jaundice
cardiac cycle steps
isovolumetric contraction, ventricular ejection, isovolumetric relaxation, ventricular filling
inreased Psi, around 70 mL ventricles (ESV)
isovolumetric relaxation
decreased psi + decreased mL
ventricular ejection
increased psi, around 140 mL
ventricular filling
the highest arterial pressure during a cardiac cycle
Systolic
the lowest arterial pressure during cardiac cycle
Diastolic
the force exerted by circulating blood on the walls of blood vessels
blood pressure
Capacitance vessels
veins
conduction system order
SA node, AV node, bundle of his, purkinje fibers
the pressure that exists in the arteriole is approximately
50 mmHG
the pressure that exists in the aorta is approximately
120 mmHG
the pressure that exists in the veins is approximately
4 mmHG
a heart rate of 120 bpm
tachycardia
a heart rate of less than 60 bpm
bradycardia
a heart rate of 250 bmp
fibrillation
positive dromotropic
increased conduction velocity
positive chronotropic
increasinf firing rate of SA node