The second heart sound is heard as the ECG records the end of the ______.   A P wave.   B P-R interval.   C QRS wave.   D T wave.   E S-T segment.

Q: The QRS-complex of the ECG is generated by the depolarization of the AV-Node & Ventricular…

A: Introduction :- The graphical recording of electrical excitation in the cardiac muscles of the heart…

Q: Which of the following scenarios is CORRECT with respect to blood flow?   Question 24 options:…

A: Blood vessels are tubular structures that carry blood to different parts of the body. The arteries…

Q: On an electrocardiogram (EKG), the electrical resetting of the ventricles is a. shown by the P wave…

A: An electrocardiogram (ECG or EKG) is a diagnostic test that measures the electrical activity of the…

Q: The heart has three layers the outermost of which is called the ___

A: The heart has three layers known as 1) Epicardium -Outermost layer 2) Endocardium - Innermost layer…

Q: The atria contract duringa. the first heart sound.b. the second heart sound.c. the QRS complex.d.…

A: The human heart is situated in the middle of the thoracic cavity in a space called the mediastinum.…

Q: When the ventricles are no longer acting as a syncytium and can't pump blood, they are in ____.…

A: The conditions where the heart of a normal person is unable to function properly is called as heart…

Q: Drugs that increase the heart rate have __________a effect.a. myogenicb. negative inotropicc.…

A: Answer is e.) positive chronotropic.

Q: Fill in the blank:  The first sound of a cardiac cycle occurs when the _______________________ are…

A: The AV valves or atrioventricular valves are located at the junction of the atria and ventricles.…

Q: a hypothetical disorder where a patient did not have an arterioventricular- bundle. As a result, the…

A: AV bundle also known as bundle of His. This is the only site where action potential can move from…

Q: Blood leaves the right ventricle by traveling across the _____valve . ?

A: The cardiovascular thoracic muscular organ called the heart is anatomically divided into four…

Q: Systole refers to the contraction of thea. major arteries. d. major veins.b. SA node. e. All of…

A: The two periods of the cardiac cycle that is diastole and systole. They will occur as the…

Q: The wall of the aorta is _______ (thicker/thinner) than the wall of the superior vena cava.

A: The aorta is the body's biggest artery. The aorta begins at the top of the heart's muscular pumping…

Q: Venous blood from the heart wall enters the right atriumthrough thea. superior vena cava.b. coronary…

A: The type of blood that is in deoxygenated condition and moves from the peripheral blood to reach the…

Q: When the ventricular walls contract A.  the mitral valve opens, and the tricuspid valve closes. B.…

A: Introduction  Ventricles are the two lower chambers of the heart, located below the atria. The heart…

Q: Which condition would cause a diastolic murmur?   A regurgitation of blood through an incompetent…

A: Diastolic murmur refers to the sound that occurs for some period during diastole. The diastolic…

Q: An increase in TPR will lead to: A decreased afterload decreased stroke volume C decreased EDV D…

A: Total Peripheral Resistance (TPR) is the total resistance offered by the systemic circulation. It is…

Q: sinus is the largest located laterally and slightly inferior to nasal cavity Oa. Maxillary sinus Ob.…

A: Sinuses are also known as paranasal sinuses. These are air-filled extensions of the nasal cavity.…

Q: A pacemaker is a small device that is placed in the chest or abdominal help control abnormal heart…

A: Introduction A pacemaker is a small, battery-operated device used to control an irregular heart…

Q: The patient's ECG indicates that _____.   A action potentials are passing from his atria into his…

A: Electrocardiography -- The process by which electrocardiogram is done defined as electrocardiography…

Q: The Right Subclavian artery is a:     A. Visceral branch of the aorta     B. Parietal branch of…

A: Blood vessels are one of the three key components (The other 2 being the heart and the blood) are…

Q: At the time point indicated on the ECG ____.   A blood would be flowing from the ventricles into…

A: An electrocardiogram can be defined as the type of test in which the heart's electrical activity is…

Q: Draw an ECG and label the waves. Indicate the electrical events in the heart that produce these…

A: Introduction: The human body is a volume conductor, which means that the body fluids are good…

Q: To get from the right atrium to the right ventricle, blood flows througha. the pulmonary valve.b.…

A: To get from the right atrium to the right ventricle, blood flows through the right AV valve or…

Q: The atrioventricular valves open because ______.   A relaxation of the ventricles causes the…

A: Atrioventricular valves These are the valves which connect the atrium to the ventricles. There are…

Q: Most blood enters the ventricle during ________.a. atrial systoleb. atrial diastolec. ventricular…

A: Each cardiac cycle comprises of a time duration starting with the contraction of atria and ending…

Q: he blood pressure in the left ventricle during systole is ______ the blood pressure in the right…

A: The blood pressure is the pressure of the blood within the arteries. It is produced primarily by the…

Q: The ECG records the electrical stimulation of cardiac muscle by the conduction system and not the…

A: We can say that Electrocardiogram (ECG) is used to measure the changes in the electrocardiograph.…

Q: ECG

A: Absence of P waves with a flat baseline is an indication of fine atrial fibrillation.

Q: The first heart sound is heard as the ECG records the end of the ______.   A P wave   B T-P…

A: An electrocardiogram (ECG or EKG) records the electrical signal from your heart to examine for…

Q: After passing through the inferior vena cava blood passes through the ____.   A coronary sinus   B…

A: The cardiovascular system or circulatory system is comprised of blood pumping muscular organ, heart,…

Q: pocket-like

A: There are four valves whose function is maintaining the unidirectional flow of blood through the…

Q: Which vessel would blood in the right coronary artery pass through next?   A anterior…

A: The circulatory system consists of three systems that work together; the heart (cardiovascular),…

Q: In 1st degree heart block there is Progressively prolonged PRI followed by QRS drop O PRI > 0.20 in…

A: Heart block is a medical emergency where the heart beats at a slower or irregular rate. A…

Q: While the semilunar valves are open during a normal cardiac cycle, thepressure in the left ventricle…

A: The human heart beats 72 times per minute. During each heart beat, the chambers of the heart…

Q: During diastole the blood pressure in the left ventricle is _______.   A lower than the pressure in…

A: The heart is a highly muscularized, involuntary organ of the body. It has four chambers consisting…

Q: Select the letter of the choice that best completes the statement. A heart rate below 60 is calleda.…

A: Heart rate referred to as the speed at which the heart beats every minute. The average heart rate is…

Dissection

Dissection is the process of cutting up the tissue of a dead or live animal or plant, to do anatomical studies and surgical treatments. The purpose of dissection is to learn more about the overall structure of organs and organ systems and thereby understand the physiology of the organism.