The QRS complex in a standard ECG represents
(a) repolarisation of auricles
(b) depolarisation of auricles
(c) depolarisation of ventricles
(d) repolarisation of ventricles.

1 Answer

Answer :

(c) depolarisation of ventricles

Related questions

Description : Match the column - I with column - II. Column-I Column-II (A) P-wave (i) Depolarisation of ventricles (B) QRS complex (ii) Repolarisation of ventricles (C) T-wave (iii) Coronary ischaemia (D) Reduction in the size of T- wave (iv) ... ) (i) (ii) (iii) (c) (iv) (i) (ii) (v) (d) (ii) (i) (v) (iii)

Last Answer : (b) (iv) (i) (ii) (iii)

Description : In a standard ECG which one of the following alphabets is the correct representation of the respective activity of the human heart? (a) S - start of systole (b) T - end of diastole (c) P - depolarisation of the atria (d) R - repolarisation of ventricles

Last Answer : (c) P - depolarisation of the atria

Description : a. The P wave represent the electrical excitation of the_____ b. The QRS complex represents the ____ of the ventricles. c. The end of T wave marks the

Last Answer : a. The P wave represent the electrical excitation of the_____ b. The QRS complex represents the ____ of ... The end of T wave marks the end of _____

Description : a. The P wave represent the electrical excitation of the_____ b. The QRS complex represents the ____ of the ventricles. c. The end of T wave marks the

Last Answer : a. The P wave represent the electrical excitation of the_____ b. The QRS complex represents the ____ of ... The end of T wave marks the end of _____

Description : Which of the following ECG waveforms characterizes conduction of an electrical impulse through the left ventricle? a) QRS complex The QRS complex represents ventricular depolarization b) P ... QT interval is an ECG characteristic reflecting the time from ventricular depolarization to repolarization.

Last Answer : a) QRS complex The QRS complex represents ventricular depolarization

Description : Given below is the ECG of a normal human. Which one of its components is correctly interpreted below? (a) Complex QRS - one complete pulse (b) Peak T - initiation of total cardiac ... R together - systolic and diastolic blood pressures (d) Peak P- initiation of left atrial contraction only

Last Answer : (a) Complex QRS - one complete pulse

Description : True statements about ECG include: a. the P-R interval corresponds to the duration of atrial systole b. the T-wave ends at the time of aortic valve closure c. the ST segment represents repolarization of the ventricles d. all

Last Answer : all

Description : Assertion `:` During diastole, ventricles receives blood from auricles. Reason `:` During ventricular diastole (stage of rapid inflow) the pressure in

Last Answer : Assertion `:` During diastole, ventricles receives blood from auricles. Reason `:` During ventricular ... . If both Assertion & Reason are false.

Description : Impulses from the pace -maker cause the (a) ventricles to contract (b) auricles to contract (c) both the ventricle and auricle to contract (d) heart to relax

Last Answer : Ans:(b)

Description : Blood pressure is high in the – (1) Ventricles (2) Arteries (3) Veins (4) Auricles

Last Answer : (2) Arteries Explanation: Hypertension (HTN) or high blood pressure, sometimes called arterial hypertension, is a chronic medical condition in which the blood pressure in the arteries is elevated. This requires the heart to work harder than normal to circulate blood through the blood vessels.

Description : Blood pressure is high in the (1) Ventricles (2) Arteries (3) Veins (4) Auricles

Last Answer : Arteries

Description : Which of the following ECG characteristics is usually seen when a patient's serum potassium level is low? a) U wave The U wave is an ECG waveform characteristic that may ... interval The QT interval is an ECG characteristic reflecting the time from ventricular depolarization to repolarization.

Last Answer : a) U wave The U wave is an ECG waveform characteristic that may reflect Purkinje fiber repolarization. It is usually seen when a patient’s serum potassium level is low.

Description : The diagram given here is the standard ECG of a normal person. The P-wave represents the (a) beginning of the systole (b) end of systole (c) contraction of both the atria (d) initiation of the ventricular contraction.

Last Answer : (c) contraction of both the atria

Description : The sequence of events in muscle contraction a. action potential depolarise the T-tubules b. depolarisation of T-tubules release calcium from sarcoplasmic reticulum c. calcium binds to the troponin-tropomycin complex d. all above

Last Answer : all above

Description : Premature ventricular contractions are considered precursors of ventricular tachycardia when they a) occur at a rate of more than six per minute. When PVCs occur at a rate of more than six per minute they ... paired with a normal beat. A PVC that is paired with a normal beat is termed bigeminy.

Last Answer : a) occur at a rate of more than six per minute. When PVCs occur at a rate of more than six per minute they indicate increasing ventricular irritability and are considered forerunners of ventricular tachycardia (VT).

Description : ASA standard monitors include all except A. Pulse oximeter B. CVP C. NIBP cuff D. ECG

Last Answer : Ans: B

Description : Which of the following statements is not correct? (a) An action potential in an axon does not move backward because the segment behind is in a refractory phase. (b) Depolarisation of hair cells ... d) In the knee-jerk reflex, stimulus is the stretching of muscle and response is its contraction.

Last Answer : (c) Rods are very sensitive and contribute to daylight vision.

Description : Assertion `:` If the muscles of both auricles of the person permanently fail to contract due to any reason there will still be no change in his genera

Last Answer : Assertion `:` If the muscles of both auricles of the person permanently fail to contract due to any ... . D. If both Assertion & Reason are false.

Description : Is qrs congruent tuv if so name the postulate that applies?

Last Answer : Might not be congruent

Description : Which of the following terms is used to describe a tachycardia characterized by abrupt onset, abrupt cessation, and a QRS of normal duration? a) Paroxysmal atrial tachycardia PAT ... fibrillation Atrial fibrillation causes a rapid, disorganized, and uncoordinated twitching of atrial musculature.

Last Answer : a) Paroxysmal atrial tachycardia PAT is often caused by a conduction problem in the AV node and is now called AV nodal reentry tachycardia.

Description : How would you describe the heart's ventricles?

Last Answer : The cardiac ventricles are the two lower chambers of the heart's four chambers. They are larger and more narrowed than the atria. They function by collecting the blood that flows into them from ... expel blood into the peripheral tissues, using major vessels to carry it to the extremities and lungs.

Description : Out of 24 hours the human heart works, ventricles contact for (a) 6 hours (b) 9 hours (c) 11 hours (d) 12 hours

Last Answer : Ans:(b)

Description : What is the stage of the cardiac cycle during which the ventricles are filled?

Last Answer : The filling of the ventricles with blood occurs during diastole. The Circulatory System - Image Diversity: cardiac cycle

Description : Cerebrospinal fluid: a. is produced mainly by the lateral, third and fourth ventricles b. enters the subarachnoid space through foramina Lushka and Magendie c. is reabsorbed mainly into the lymphatics d. production is dependent of the blood pressure

Last Answer : is produced mainly by the lateral, third and fourth ventricles

Description : The cerebrospinal fluid: a. has a normal volume of 150 ml b. has a normal opening pressure of 7 - 18 cm H2O c. flows from the ventricles to the subarachnoid space via the foramen of Monro d. does not contain neutrophils in normal individuals

Last Answer : has a normal volume of 150 m

Description : Systemic heart refers to (a) the heart that contracts under stimulation from nervous system (b) left auricle and left ventricle in higher vertebrates (c) entire heart in lower vertebrates (d) the two ventricles together in humans.

Last Answer : (b) left auricle and left ventricle in higher vertebrates

Description : Bundle of His is a network of (a) muscle fibres distributed throughout the heart walls (b) muscle fibres found only in the ventricle wall (c) nerve fibres distributed in ventricles (d) nerve fibres found throughout the heart.

Last Answer : (b) muscle fibres found only in the ventricle wall

Description : Doctors use stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when (a) AV node receives signal from SA node (b) AV valves open up (c) Ventricular ... blood from atria (d) Semilunar valves close down after the blood flows into vessels from ventricles.

Last Answer : (d) Semilunar valves close down after the blood flows into vessels from ventricles

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

Description : True or false? The two chambers at the bottom of your heart are called ventricles.

Last Answer : True

Description : Digitalis induced increase in refractory period of myocardial fibres is most consistent and pronounced in the: A. Atria B. Ventricles C. A-V node D. Purkinje fibres

Last Answer : C. A-V node

Description : Digitalis in creases the force of contraction of ventricles by: A. Increasing the duration of systole B. Increasing the rate of contraction without affecting the duration of systole C. Increasing the rate ... of systole D. Increasing both the rate of contraction as well as the duration of systole

Last Answer : C. Increasing the rate of contraction, but reducing the duration of systole

Description : Name the clear watery liquid that surrounds the brain and spinal cord and fills the four cavities or ventricles of the brain.

Last Answer : ANSWER: Cerebrospinal Fluid

Description : What does the P wave of an ECG indicate? -Biology

Last Answer : answer:

Description : What is the full form of 'ECG' ? -How To ?

Last Answer : The full form of 'ECG' is Electro Cardiogram

Description : How much does ECG test cost ?

Last Answer : ECG cost 60 rupees.

Description : How much does it cost to do ECG and chest X-ray of heart ?

Last Answer : Approximately 400-500 / = for X-ray may cost 200-300 / = for ECG but the amount of money may vary from place to place.

Last Answer : ECG - Electro Cardiogram Graph

Last Answer : ECG can be done with the help of electrocardiograph

Last Answer : ECG Being Echo - Cardiogram Of Brief Appearance. ECG Testing Through Harder Efficiency Observation To do Goes.

Last Answer : Electro Cardio Gram

Description : What is the full form of ECG?

Last Answer : Ecg full form is electrocardiogram. Electrocardiogram is a test which measures the electrical activity of your heart to show whetheror not it is working normally.

Description : a. SAN generates as action potential which stimulates atrial systole. b. ECG is an electrical representation of the graphical activity of the heart du

Last Answer : a. SAN generates as action potential which stimulates atrial systole. b. ECG is an electrical ... one of the main symptoms of this disease.

Description : how a person can determine the heart rate of an individual by the observation of ECG?

Last Answer : how a person can determine the heart rate of an individual by the observation of ECG?

Description : a. SAN generates as action potential which stimulates atrial systole. b. ECG is an electrical representation of the graphical activity of the heart du

Last Answer : a. SAN generates as action potential which stimulates atrial systole. b. ECG is an electrical ... one of the main symptoms of this disease.

Description : how a person can determine the heart rate of an individual by the observation of ECG?

Last Answer : how a person can determine the heart rate of an individual by the observation of ECG?

Description : Electrocardiogram (ECG) - interactive tool?

Last Answer : Click the waveform pull-down list to view various waveforms showing normal and pathological conditions of the heart.Reviewed ByReview Date: 11/08/2010Glenn Gandelman, MD, MPH, FACC Assistant Clinical ... Medicine, Department of Medicine, University of Washington School of Medicine (5/23/2010).

Description : Cardiac tamponade ecg?

Last Answer : Can anybody explain about cardiac tamponade ECG/EKG