The cardiac impules hat results into the heart beat is delayed at `:-`

The cardiac impules hat results into the heart beat is delayed at `:-`
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The cardiac impules hat results into the heart beat is delayed at `:-` A. Internodal tract B. AV Node C. Bundle of His D. Purkinje fibres
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How many beats per minute does the heart have to beat in order for it to be considered cardiac arrhythmia?

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Impulse of heart beat originates from (a) SA node (b) AV node (c) vagus nerve (d) cardiac nerve

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Which of the following terms indicates the amount of blood pumped out of the ventricle with each contraction of the heart? a) Stroke volume Stroke volume is the amount of blood pumped out (ejected) with each contraction of the heart (heart beat). Stroke volume times heart rate equals cardiac output.

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During Phase 2 of action potential in cardiac cell, depolarizing current through calcium channels is balanced by (a) Delayed rectifier potassium current (b) outward chloride channel (c) Both (a) and (b) (d) None of the above

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Last Answer : Ans: E

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People consuming alcohol in heavy quantities generally die of – (1) liver or stomach cancer (2) weakening of heart muscles leading to cardiac arrest (3) blood cancer (4) Cirrhosis

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Heavy alcohol consuming people generally die of (1) blood cancer (2) cirrhosis (3) liver or stomach cancer (4) weakening of heart muscles leading to cardiac arrest

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Heart is devoid of - (1) cardiac muscle (2) involuntary muscle (3) voluntary muscle (4) smooth muscle

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Cyanide poisoning causes death in seconds because - (1) It denatures enzymes of the heart/muscle (2) It breaks the electron transport chain (3) It causes Lysis of red blood cells (4) It causes cardiac arrest

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The cardiac reserve is: A A. ability of the heart to respond to circulatory demands over and above those of the animal/ human at rest B. ability of the heart to respond to circulatory demands to fulfil the needs of animal / human at rest C. Is the blood that is present in the peripheral circulatory D. None of these

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Last Answer : ability of the heart to respond to circulatory demands over and above those of the animal/ human at rest

The effect of noradrenaline on the heart include: a. tachycardiac b. increased duration of the cardiac action potential c. decreased potassium conductance of the membranes of pacemaker cells d. increased strength of cardiac contraction

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Last Answer : fourth heart sound occurs during atrial contraction

How do parasympathetic neural signals affect the working of the heart? (a) Reduce both heart rate and cardiac output. (b) Heart rate is increased without affecting the cardiac output. (c) Both heart rate and cardiac output increase. (d) Heart rate decreases but cardiac output increases.

Description : How do parasympathetic neural signals affect the working of the heart? (a) Reduce both heart rate and cardiac output. (b) Heart rate is increased without affecting the cardiac output. (c) Both heart rate and cardiac output increase. (d) Heart rate decreases but cardiac output increases.

Last Answer : (a) Reduce both heart rate and cardiac output.

What would be the heart rate of a person if the cardiac output is 5 L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL ? (a) 125 beats per minute (b) 50 beats per minute (c) 75 beats per minute (d) 100 beats per minute

Description : What would be the heart rate of a person if the cardiac output is 5 L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL ? (a) 125 beats per minute (b) 50 beats per minute (c) 75 beats per minute (d) 100 beats per minute

Last Answer : (d) 100 beats per minute

Identify the tissue shown in the diagram and match with its characteristics and its location. (a) Smooth muscles, show branching, found in the wall of the heart(b) Cardiac muscles, unbranched muscles, found in the walls of the heart (c) Striated muscles, tapering at both-ends, attached with the bones of the ribs (d) Skeletal muscles show striations and are closely attached with the bones of the limbs

Description : Identify the tissue shown in the diagram and match with its characteristics and its location. (a) Smooth muscles, show branching, found in the wall of the heart (b) Cardiac muscles, unbranched ... the ribs (d) Skeletal muscles show striations and are closely attached with the bones of the limbs

Last Answer : (d) Skeletal muscles show striations and are closely attached with the bones of the limbs

The patient with cardiac failure is taught to report which of the following symptoms to the physician or clinic immediately? a) Persistent cough Persistent cough may indicate an onset of left-heart failure. b) Increased appetite Loss of appetite should be reported immediately. c) Weight loss Weight gain should be reported immediately. d) Ability to sleep through the night Frequent urination, causing interruption of sleep, should be reported immediately.

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Last Answer : a) Persistent cough Persistent cough may indicate an onset of left-heart failure.

Shortacting nifedipine formulation is not recommended now for treatment of hypertension because: A. It tends to increase heart rate and cardiac work B. It invokes pronounced reflex sympathetic discharges C. It can impair haemodynamics in patients with diastolic dysfunction D. All of the above

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Last Answer : D. All of the above

The following is true of β-adrenergic blocker therapy in CHF: A. They are added to conventional therapy after cardiac compensation is restored B. They are indicated only in severe (NYHA class IV) heart failure C. They are to be used only at low doses D. All of the above

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Last Answer : A. They are added to conventional therapy after cardiac compensation is restored

n a failing heart therapeutic dose of digoxin has no effect on the following parameter: A. Cardiac output B. Heart rate C. Tone of ventricular fibres D. Cardiac vagal tone

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Last Answer : C. Tone of ventricular fibres

In post-myocardial infarction and other high cardiovascular risk subjects but without hypertension or heart failure, prolonged ACE inhibitor medication has been found to: A. Increase the chances of sudden cardiac death B. Reduce the incidence of fatal as well as nonfatal myocardial infarction or stroke C. Lower the risk of developing heart failure and diabetes D. Both ‘B‘ and ‘C’

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Last Answer : D. Both ‘B‘ and ‘C

Angiotensin converting enzyme inhibitors reduce the following haemodynamic parameters in congestive heart failure except: A. Systemic vascular resistance B. Right atrial pressure C. Cardiac output D. Heart rate × pressure product

Description : Angiotensin converting enzyme inhibitors reduce the following haemodynamic parameters in congestive heart failure except: A. Systemic vascular resistance B. Right atrial pressure C. Cardiac output D. Heart rate × pressure product

Last Answer : C. Cardiac output

The following drug increases cardiac output in congestive heart failure without having any direct myocardial action: A. Captopril B. Digoxin C. Amrinone D. Dobutamine

Description : The following drug increases cardiac output in congestive heart failure without having any direct myocardial action: A. Captopril B. Digoxin C. Amrinone D. Dobutamine

Last Answer : A. Captopril

Angiotensin II plays a key role in the following risk factor for ischaemic heart disease: A. Hypercholesterolemia B. Ventricular hypertrophy C. Carbohydrate intolerance D. Cardiac arrhythmia

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Last Answer : B. Ventricular hypertrophy

The basis for use of β-adrenergic blockers in congestive heart failure (CHF) is: A. They exert positive inotropic effect in CHF B. They counteract deleterious effect of sympathetic overactivity on the myocardium C. They exert antiischaemic effect on the heart D. They prevent cardiac arrhythmias

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Last Answer : B. They counteract deleterious effect of sympathetic overactivity on the myocardium

The basis for use of β -adrenergic blockers in congestive heart failure (CHF) is: A. They exert positive inotropic effect in CHF B. They counteract deleterious effect of sympathetic overactivity on the myocardium C. They exert antiischaemic effect on the heart D. They prevent cardiac arrhythmias

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Last Answer : B. They counteract deleterious effect of sympathetic overactivity on the myocardium

Heavy alcohol consuming people generally die of (1) blood cancer (2) cirrhosis (3) liver or stomach cancer (4) weakening of heart muscles leading to cardiac arrest

Description : Heavy alcohol consuming people generally die of (1) blood cancer (2) cirrhosis (3) liver or stomach cancer (4) weakening of heart muscles leading to cardiac arrest

Last Answer : cirrhosis

Cyanide poisoning causes death in seconds because (1) It denatures enzymes of the heart/muscle (2) It breaks the electron transport chain (3) It causes Lysis of red blood cells. (4) It causes cardiac arrest

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Last Answer : It causes cardiac arrest

Which hat styles are best suited to a heart-shaped face?

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