Physiology Flashcards by eunice lagto

Which of the ff statements is FALSE

A. There is MORE rapid ejection rate in semilunar valves than AV valves

B. there is MORE pressure needed to close AV valves than semilunar valves

C. There is no chordae tendinae in semilunar valves

D. Semilunar valves are subjected to greater mechanical abrasion

B. less pressure to close AV valves

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Valve/s CLOSE during period of ejection

A. AV valves

B. semilunar valves

C. Both

D. None

A. Semilunar valves OPEN

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Also known as the upstroke

A. Phase 1

B. phase 2

C. Phase 3

D. Phase 4

E. Phase 0

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What are the determinants of CO?

A. HR

B. SV

C. BOTH

D. NOTA

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Caused by Over bulge of AV valve

A. C wave

B. a wave

C. V wave

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A drug that changes heart’s excitability is changing the _____ of the heart

A. Chronotropism

B. Dromotropism

C. Inotropism

D. Bathmotropism

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During which phase of the cardiac cycle does the mitral valve open?

A. Atrial systole

B. isovolumetric ventricular contraction

C. Rapid ventricular ejection

D. Isovolumetric ventricular relaxation

E. rapid ventricular filling

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Contraction of the atria “tops off” ventricular filling with a final, small volume of blood from the atria, producing the ____

A. A wave

B. c wave

C. V wave

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Which part of the ECG is characterized by transmission of electrical activity of the AV bundle

PR segment

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All muscles in the heart are non automatic except

A. Atrial muscle

B. ventricular muscle

C. Bundle of His

D. None of the above

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This surface of the heart is also known as the anterior surface. What is this surface mostly composed of?

A. R atrium

B. r ventricle

C. L atrium

D. L ventricle

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In ECG,this Represents the time from the end of atrial depolarization to the start of ventricular depolarization

PR segment

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What valves are open during isovolumetric relaxation

A. AV valves

B. semilunar valves

C. Both

D. None

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Condition that leads to irreversible changes and death of cardiac muscle cells

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Majority of ventricular filling occurs in this phase?

A. Early systole

B. late systole

C. Early diastole

D. Late diastole

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The ff cause an increase in stroke volume except

A. Inc force of contraction of ventricles

B. inc after load

C. Both

D. None of the above

B. dapat decrease un after load

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Stroke volume output may be increased by

A. Increasing end diastolic volume

B. decreasing end systolic volume

C. Both

D. None of the above

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Longest portion of the nodal action potential

A. Phase 1

B. phase 2

C. Phase 3

D. Phase 4

E. Phase 0

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All of the ff can influence the BP except

A. HR

B. TPR

C. CO

D. NOTA

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In ECG, this Represents the time required for SA node impulse to travel through the conduction system

PR interval

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AV valves

A. prevents backflow of blood from ventricle to atrium during diastole

B. prevents backflow of blood from ventricle to atrium during systole

C. prevents backflow of blood from aortic valve to ventricle during diastole

D. prevents backflow of blood from aortic valve to ventricle during systole

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Other name of AV node

A. Node of Keith and Flack

B. Node of Kent and TAwara

C. Purkinje fiber

D. Tract of Bachman

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This interval in the in the ECG reading corresponds to the ventricular rate. This can be also be a marker for the HR read from the ECG

A. P-R interval

B. P-R interval

C. R-R interval

D. AOTA

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Normal value of QT interval

0.44 sec

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Aka maximum diastolic potential A. Phase 1 B. phase 2 C. Phase 3 D. Phase 4 E. Phase 0

The most common adult rhythm with the rates between 60 -100 / min A. Sinus rhythm B. sinus bradycardia C. Sinus tachycardia D. Sinus exit block

A patient with AV block will have A. Increased PR interval B. decreased PR interval

An acute change in cardiac pressure A. Cardiac tamponade B. cardiac hypertrophy C. Perocardial effusion D. Pericarditis

Produced with vagal stimulation or due to sick sinus syndrome. ECG shows narrow QRS with upright P waves in lead II A. Sinus rhythm B. sinus bradycardia C. Sinus tachycardia D. Sinus exit block

True or false. Murmurs are turbulent flows

True

True or false, cardiac muscles contract LONGER than skeletal muscle

True, kc may plateau sila

Other name of SA node A. Node of Keith and Flack B. Node of Kent and TAwara C. Purkinje fiber D. Tract of Bachman

Which of the ff can result to an sinus tachycardia? A. Pain B. increased oxygen demand C. Hypovolemia D. Sympathetic stimulation E. AOTA F. NOTA

In ECG, this Represents the entire period of ventricular depolarization and repolarization

QT interval

A slow progressive increase in pericardial fluid A. Cardiac tamponade B. cardiac hypertrophy C. Perocardial effusion D. Pericarditis

True or false sinus arrhythmia is common on elderly population?

False ... Common on children

Increasing PR interval means A. Longer AV conduction time B. shorter AV conduction time

Hyperkalemia may cause the following EXCEPT A. Decrease action potential B. Decrease heart rate C. Makes heart flaccid D. Increases contraction E. none of the above

D. Decrease dapat

Valve located between the left atrium and left ventricle

MitraL valve sa right, tRicuspid valve

Which type of fibrillation is asymptomatic? A. Atrial B. ventricular C.sinus node D. AOTA

In ECG , this represents time from end of ventricular depolarization to the start of ventricular repolarization

ST segment

What heart sound can be heard when AV valves close A. First B. second C. Third D. Fourth

Primary controller of cardiac output A. Heart B. venous return C. Capillary function D. CNS

Described as the state of the heart is FULL because it is the volume after ventricular filling A. After load B. preload C. ESV D. EDV

What part of the ECG pattern shows an isoelectric segment

ST segment

A murmur heart throughout systole is A. Insufficient AV valve, stenotic SL valve B. stenotic AV valve, stenotic SL valve C. Insufficient AV valve, insufficient SL valve D. Stenotic AV valve, insufficient SL valve

The base of the heart is occupied by this chamber? A. L atrium B. r atrium C. L ventricle D. R ventricle

Limb leads provide ______ plane while chest leads provide _____ plane of the heart A. Horizontal, vertical B. horizontal, horizontal C. Vertical, vertical D. Vertical , horizontal

Sympathetic stimulation of the heart except A. Increase heart rate B. increase force of contractility C. Increase volume of blood pumped D. Decrease ejection pressure

D. Dapat increase

In the conduction sys of the heart where is the slowest conduction A. SA node B. AV node c. Bundle of His D. Purkinje fiber

Which receptor will be activated when there's an inc. in pressure on blood vessels?

Baroreceptor,, carotid sinus location

A man presents with chest pain. You Suspect MI.. Did ECG .. Observed ST elevation on V1 and v2. What vessel is most likely blocked?

Left descending artery

What valves are open during isovolumetric contraction

None

True or false. SA node resting membrane potential is HIGHER than in neuromuscular junctions

False. LOWER. RMP is -60 Threshold is -40

A.k.a junctional node

Av node

A man was found to have lateral wall MI, Most likely there is also A. Septal wall MI B. anterior wall MI C. Inferior wall MI D. superior wall MI

C. Same artery supplies it

Valves close during isovolumetric contraction

AV valves and semilunar valves .

True or false. left side of the heart has THICKER muscle

True. Kc systemic circulation is a high pressure high resistant circuit so thicker muscle is needed to overcome it

Valvular prolapse causes back flow of the blood. It can be caused by the ff except: A. Streptococcal bacterial infection B. rheumatic fever C. HTN D. NOTA

In counting heart rate in an ECG strip, if there is irregularity in RR intervals. The best method to use is A. Rule of 300 B. mathematical formula C. Six second strip D. Either of the choices

The amount of extracellular calcium entering the plateau phase is directly proportional to the ff except A. Intracellular calcium concentration B. number of open calcium channels C. Duration of action potential D. Number of action potential

A. Dapat extracellular kc mas dun nagdedepend un heart

Impingement of the mitral valve due to back flow of the blood

Austin flint murmur

In ECG this represents the Interval from the start of the P wave to the beginning of the QRS complex

PR interval

S2 A. Closing of AV valves B. closing of semilunar valves C. Rapid ventricular filling D. Atrial systole

Absent P wave is indicative of what abnormality?

Atrial arrhythmia

Normal range for PR interval

0.12-0.2 sec

When semilunar valve close it can be heard as _____ heart sound A. First B. second C. Third D. Fourth

Heart sound that is Audible in children with mitral stenosis

Most frequent site of MI A. L ATRIUM B. L VENTRICLE C. R ATRIUM D. R VENTRICLE

The atrial rise in pressure during atrial diastole is the A. C wave B. a wave C. V wave

Pacemaker of the heart

SA node

This segment/ interval in the ECG tracing corresponds to the ventricular contraction time. If this segment is too long it means that the heart is weak. A. PR interval B. QT segment C. PR segment D. QT interval

Coughing A. Decreases PR interval B. increases PR interval

sequence of electrical and mechanical events occurring in the heart during a single beat and the resulting changes in pressure, flow, and volume in the various cardiac chambers

Cardiac cycle

If the SA and AV Nodes fail, this will take over

bundle of His

An increase in the net concentration of this ion will cause a flaccid heart effect, leading to ventricular fibrillation. A. Ca B. Na C. K D. Cl

In what phase does pacemaker potential occurs

Phase 4

the difference in the volume of blood in the ventricle at the end of diastole and at the end of systole

Stroke volume

S3 A. Closing of AV valves B. closing of semilunar valves C. Rapid ventricular filling D. Atrial systole

Which among the valves correspond to the DUB sound

Pulmonary and aortic valve

Period in the cardiac cycle wherein there is ventricular contraction but no ejection of blood A. Filling B. ejection C. Ventricular relaxation D. Ventricular contraction

Importance of the internodal delay in the AV node

Allow ventricle to be filled with blood

Increase in BP will result to ______ HR while an increase in temp will result to ______ HR A. INC, DEC B. DEC, INC C. INC, INC D. DEC, DEC E. INC, NO CHANGE

How much pressure must be overcome by ventricular pressure to open semilunar valves

80 mmHg

Plateau phase A. Phase 1 B. phase 2 C. Phase 3 D. Phase 4 E. Phase 0

A.k.a. Pulmonic pump

R ventricle

When does atrial systole become important in ventricular filling A. Resting condition B. exercising condition

B. normally okay LNG Khit dysfunction un atrial systole kc 20% LNG un contribution Niya sa ventricular filling

Acidosis can inhibit myocardial contractility. It is a A. Negative Dromotropic B. negative inotropic C. Negative bathmotropic D. Negative chronotropic

Ejection fraction except A. Determines the percentage of blood pumped out from the R ventricle over its EDV B. 60% is still normal C. Determines the percentage of the SV over the EDV of L ventricle D. 70% is still normal

Arrange the ff sequence of blood circulation of a deoxygenated blood 1. Superior Vena cava 2. Left ventricle 3. Left atrium 4. Right ventricle 5. Right atrium 6. Tricuspid valve 7. Mitral valve 8. Lungs 9. Aorta

156483729

How can myocardial ischemia decrease cardiac contractility

Inhibition of calcium channels

This pacemaker has the smallest fibers and tend to be the only pacemaker left for the ventricles during third degree heart block

Purkinje fibers

What valves are CLOSE during isovolumetric relaxation A. AV valves B. semilunar valves C. Both D. None

True or false. LEFT atrial systole occurs first

False. Una un right

Nerve that causes the flaccid heart is

Vagus nerve

short period of backward flow of blood immediately before closure of the aortic valve,followed by sudden cessation of the backflow

Incisura

What phase in the cardiac cycle does atrium increase in size due to venous return

Reduced ejection

The ff describes the AV nodes EXCEPT A. Where electrical conduction is at its slowest B. N region is the most common site of AV block C. Has large diameter D. NH assumes pacemaker function when SA node is depressed

C. Small diameter. Kya NGa mabagal un conduction dun e

Filling of ventricles occur maximally during A. Isovolumic cxn period B. Atrial systole C. Vasodilation D. Rapid ejection period E. first 1/3 of diastole

Which of the following comprises the AV valves A. Tricuspid valve B. mitral valve C. Both D. None

C. Semilunar valves un aortic and pulmonary valve

When ejection exceeds aortic pressure run off A. Aortic pressure increases B. aortic pressure decreases C. No change in aortic pressure

SV is said to be lowest in which of the ff? A. Muscular activity B. Recumbent position C. Slow walking D. Erect position

Semilunar valves A. prevents backflow of blood from ventricle to atrium during diastole B. prevents backflow of blood from ventricle to atrium during systole C. prevents backflow of blood from aortic valve to ventricle during diastole D. prevents backflow of blood from aortic valve to ventricle during systole

Site of principal delay in the conduction sys of the heart

AV node specifically AN region

Semilunar valves refer to the ff except A. Composed of aortic and pulmonary valve B. requires no backflow C. prevents backflow of blood from aortic valve to ventricle during diastole D. Requires a quick backflow to cause closure

B. AV valve un requires no backflow to cause closure

Heart sound audible with left ventricular hypertrophy patients

Valve/s OPEN during period of filling A. AV valves B. semilunar valves C. Both D. None

A. Semilunar valves close

Where can you hear the largest heart sound

Left 5 th ICS MCL. Apex beat

Sequence of electrical conduction of the heart A. Bundle of His B. Purkenje fiber C. SA node D. Internodal pathway

CDAB

True or false,congenital defect of the pericardial sac is fatal

False,

Characteristic of second heart sound except A. Semilunar valves close B. short lasting as compared to first heart sound C. Low vibration D. Occurs at the end of systole

C. High vibration dapat

The following can cause positive shift in maximum diastolic pressure except A. Inc depolarization rate B. decrease pre potential C. Dec threshold D. None of the above

B. dapat increase

Which of the following statements is TRUE A. External work refers to the movement of blood from LOWER pressure VEINS to HIGHER pressure ARTERIES B. External work refers to the movement of blood from HIGHER pressure VEINS to LOWER pressure ARTERIES C. External work refers to the movement of blood from HIGHER pressure ARTERIES to LOWER pressure VEINS D. External work refers to the movement of blood from LOWER pressure ARTERIES to HIGHER pressure VEINS

True or false. Artery have thicker wall than veins

True

What heart sound is associated with very fast ventricular filling A. First B. second C. Third D. Fourth

sum of all the local blood flows through all the individual tissue segments of the peripheral circulation

Venous return

What type of cardiac muscle is responsible for the autorhythmicity of the heart A. Atrial muscle B. ventricular muscle C. Conductive and excitable muscle D. All of the above

Used as the power pump of the heart

VentriclesAtria- primer pumps

Natural pacemaker of the heart

SA Node

Function of cardiac valves

Prevent backflow/ regurgitation of bloodAssures forward flow of blood

The ff refers to SA node except A. Capable of self excitation B. located at the superior posterolateral part of the right atrium C, directly connected to atrial muscle fibers D. None of the above

Arteries are also called capacitance vessels. Veins are called resistance vessels A. 1st statement true, second statement false B. 1st statement false, 2nd statement false C. Both are true D. Both are false

D. Veins un capacitance, arteries un resistance. Pag capillaries naman exchange vessel

Importance of delay in the transmission of conduction of atrium to ventricle

Allows ventricle to be filled with blood

True or false. The pulmonary artery carries OXYGENATED Blood

False. Deoxygenated

Which part of ECG is characterized by prolonged wave

T wave

What part of the cardiac cycle corresponds the apex beat

Rapid ejection

Heart rate is determined by A. Interval bet 2 P wave B. interval bet 2 QRS wave C. Interval bet 2 T wave D. Interval bet 2 z line

A murmur heard during diastole A. Insufficient AV valve, stenotic SL valve B. stenotic AV valve, stenotic SL valve C. Insufficient AV valve, insufficient SL valve D. Stenotic AV valve, insufficient SL valve

The ff may cause tachycardia except A. Fever B. simple weakening of myocardium C. Symphatolytic agent D. Increase rate of metabolism of SA node

Negative shift in maximum diastolic potential results in A. Bradycardia B. tachycardia

In pre cordial leads, where will you put v1

V1 4th ICS R parasternal border V2 4th ICS L parasternal border V3 between V2 and V4 V4 5th ICS L MCL V5 5th ICS L AAL V6 5th ICS left MAL

First 1/3 of the ventricular diastole corresponds the _____ in the cardiac cycle

Rapid filling Second 1/3 un reduced filling Last 1/3 un atrial systole

In precordial leads, what lead is put in 5th ICS L MCL

What heart sound is heard immediately before first heart sound

Major reservoir of extra blood A. Artery B. capillary C. Vein D. Arterioles

S4 A. Closing of AV valves B. closing of semilunar valves C. Rapid ventricular filling D. Atrial systole

Main source of energy of the heart A. Carbohydrate B. protein C. Fatty acids D. Nucleotides

S1 signifies A. Closing of AV valves B. closing of semilunar valves C. Rapid ventricular filling D. Atrial systole

Characteristic of an action potential of SA node EXCEPT A. Spontaneous generation of impulse even without neural input B. unstable resting membrane potential C. No sustained plateau D. Exhibits tetany

Other name for conductivity A. Chronotropism B. Dromotropism C. Inotropism D. Bathmotropism

blood flowing rapidly in the usual direction through an abnormally narrow valve A. Stenosis B. insufficiency C. Tamponade D. Myocardial infarction

Blood flowing backward through a damaged leaky valve A. Stenosis B. insufficiency C. Tamponade D. Myocardial infarction

What disease is most commonly associated with gallop rhythm

Congestive heart failure

True or false. Atrium contracts first compared to ventricle

True

30% of blood volume is pumped into the ventricle during what cardiac cycle phase

Atrial systole/ pre systole

To increase the turbulence flow the ff must be done except A. Increase diameter B. increase viscosity C. Increase fluid density D. Increase velocity

B. dapat decrease

According to the streamline flow, what part has the fastest velocity A. Lateral side B. medial side C. Anterior D. Posterior

True or false. In normal circumstances there is turbulent flow

True. In the aorta and carotid sinus

Other name for autorhythmicity A. Chronotropism B. Dromotropism C. Inotropism D. Bathmotropism

Inability to open completely A. Stenosis B. insufficiency C. Tamponade D. Myocardial infarction

Represents ventricular repolarization in the ECG

T wave

Inability to close completely A. Stenosis B. insufficiency C. Tamponade D. Myocardial infarction

Accounts for the automaticity of nodal cells A. Phase 1 B. phase 2 C. Phase 3 D. Phase 4 E. Phase 0

Which of the following is the correct sequence of cardiac cycle A. Rapid filling , diastasis, isovolumetric relaxation , atrial systole B. diastasis, isovolumetric relaxation, atrial systole, rapid filling C. Isovolumetric relaxation, rapid filling , diastasis. Atrial systole D. Atrial systole, isovolumetric relaxation, diastasis, rapid filling

Main goal of circulatory system

Tissue perfusion

Ejection fraction refers to the following EXCEPT A. Is normally around 60% B. fraction of end diastolic volume ejected C. Fraction of end systolic volume ejected D. Two of the above

True or false, left coronary artery is SHORTER than the right one

True, but supplies more

P wave represents

Atrial depolarization

Things that causes negative inotropism A. Digoxin B. verapamil C. Norepinephrine D. Epinephrine

Progressive and sustained enlargement of the heart A. Cardiac tamponade B. cardiac hypertrophy C. Perocardial effusion D. Pericarditis

True or false. Mitral valve has muscles

False. Its movement is dictated by PRESSURE gradient

Represents ventricular diastole in ECG

T wave

Condition in which bleeding occurs due to puncture of coronary vessels during catherization A. Cardiac tamponade B. cardiac hypertrophy C. Perocardial effusion D. Pericarditis

Represents ventricular depolarization in ECG

QRS complex

defined as the volume of blood ejected from the heart per unit time

Cardiac output

Where can you hear apex beat

Left 5th ICS

Physiology Flashcards

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