The heart's pacemaker is the O a. atrioventricular node O b. bicuspid node O c. sinoatrial node O d. Purkinje node

Q: If a baroreceptor detects low blood pressure, which of the following will result? Group of answer…

A: Monitoring of blood pressure and it's adjustment is done by baroreceptors. Baroreceptors are special…

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 second heart sound ("dub") results from vibrations generated by the A. closing of the AV valves…

A: A normal heartbeat consists of two sounds- LUB and DUB. These sounds often occur as pairs in a…

Q: What do you think about artificial heart? How is real heart different to artificial heart? do you…

A: The working of artificial Heart is very complex and so is its cost. The challenge is to make a…

Q: What will happen to the next level of exercise tolerance in a person whose heart is being paced by…

A: The human circulatory system, also called the cardiovascular system consists of a muscular chambered…

Q: When is the blood pressure in the left ventricle greater than the blood pressure in the aorta?   A…

A: Cardiac cycle is a cycle through which atrial contraction ends with  ventricular relaxation. When…

Q: Put these autorhythmic cells into the correct order for conveying electrical signals through a…

A: The sinoatrial node (SA node) acts as the pacemaker of the heart. By continuously creating new…

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

A: Answer is e.) positive chronotropic.

Q: Which neurotransmitter/target receptor combinations would you expect to find in these areas of the…

A: Neurotransmitter and target receptor combinations in the areas of the heart are as follows: SA…

Q: If both sympathetic and parasympathetic innervation to the heart conductive system were removed,…

A: As we know The heart is that organ that pumps oxygenated blood into circulation. The heart has four…

Q: If leaky Na+ channels in the cells of the SA Node became more leaky (allowed Na+ through at a faster…

A: Generation of the action potential is a significant characteristic of the cells of the sinoatrial…

Q: use the word bank to complete the concept map

A: The cardiovascular system, sometimes referred to as the circulatory system, is in charge of…

Q: Diastole is associated with which of the following? a. The P wave of the ECG o b. Isovolumetric…

A: Heart is the part of circulatory sytem. It is responsible for pumping the blood to different parts…

Q: The heart chamber that receives oxygenated blood from the lungs of animals with a double circulation…

A: Human heart is the Center for regulating blood across the body. It is located within the thoracic…

Q: The period during which a heart chamber is contracting is called _______ . The period during which…

A: Heart helps in the circulation of blood in the human body. It works like a pump. It is situated…

Q: All of the following are true of cardiac arrest except A. It is the cessation of all heart activity…

A: The heart is a muscular organ that pumps oxygenated blood to the aorta, which conveys it to the…

Q: An embolus lodged in the circumflex artery could impair blood flow to what portion of the heart? O…

A: The cardiovascular system is also known as the circulatory system allows the blood flow throughout…

Q: Which of the following anatomical structures is not part of the systemic circuit a. left ventricle O…

A: The cardiovascular system is composed of two main circuits - A. The pulmonary circuit B. The…

Q: parasympathetic nerve stimulation in the heartt will result in A.decreased heart rate B.increased…

A: Parasympathetic nerve stimulation refers to the activation of the parasympathetic nervous system,…

Q: Complete ventricular filling occurs during what phase of the cardiac cycle? a. when the atria are…

A: The heart is the part of circulatory system. It pumps blood to various parts of the body.

Q: пишпипшити A. Agonal rhythm/asystole B. Atrial fibrillation C. Atrial flutter D. Monomorphic…

A: The electrical activity pattern that regulates the heart's contractions is referred to as cardiac…

Q: 1. Which phase of Ventricular Filling increases the volume of blood in the ventricles the most?…

A: The heart is a pump that transports blood through a network of arteries. Its function is to send…

Q: Why do you think it is important for heart valves to ensure that blood flows in only one direction…

A: Human heart is the Center for regulating blood across the body. It is made up of cardiac Muscles…

Q: Which of the following channels are involved in the action potential in contractile cells of the…

A: An action potential is a sudden, fast, transitory, and propagating shift in the resting membrane…

Q: What is the primary reason for why pulse pressure increases with aging? a. Decrease in the number…

A: The objective of the question is to identify the primary reason for the increase in pulse pressure…

Q: Which of the following is true about the pacemaker potential in the heart? a. Decreased K+ efflux…

A: The pacemaker potential, also known as the prepotential, is the slow, positive increase in voltage…

Q: What valve is located between the left atrium and left ventricle? a-Tricuspid valve b-Bicuspid valve…

A: Heart is a muscular organ. Heart pumps blood, it has four chambers having two atrium and two…

Q: The function of structure X is to Select one: a. act as the pacemaker of the heart. b. initiate the…

A: Heart is located in the chest cavity and derived from mesodermal tissue. Heart is surrounded and…

Q: When the ventricles contract, all of the following occur excepta. closing of the AV valves.b. blood…

A: Ventricles are the larger chambers of the heart which receives blood from the atrium. The right…

Q: which of the following factors will increase the cardiac output? a. decreased heart rateb. increased…

A: The objective of the question is to identify the factors that can increase the cardiac output.…

Q: Which of the following is the correct circulatory sequence forblood to pass through part of the…

A: The heart is a pumping organ that continuously pumps blood to the entire body. It comprises four…

Q: What is the correct sequence for flow of blood in the heart? o Superior vena cava → right ventricle…

A: The circulatory system delivers oxygen and nutrients to cells and takes away wastes. The heart pumps…

Q: cardiac output will increase by a. decreased blood volume and decrease of heart contractility b.…

A: When both ventricles ( left as well as right ) pump some amount of blood in a given time , it is…

Q: The second heart sound is caused by: a. closure of the aortic and pulmoary valvesb. vibrations in…

A: The objective of this question is to understand what causes the second heart sound in the cardiac…

Q: Cardiac output measures blood ejected from a. both atria each minute b. each ventricle each minute…

A: Cardiac output refers to the volume of blood that is pumped by the heart per unit of time, usually…

Q: Which of the following has a correct sequence in cardiac cycle? A. Atrial depolarization →…

A: The cardiac cycle is the performance of the human heart from the beginning of one heartbeat to the…

Q: The only area of the heart that receives innervation from the brain is called the: A.…

A: Cranial nerves are the part of the nervous system that assists in a variety of functions. These…

Q: The sinoatrial node sets the pace for the heart as a whole because sinoatrial node cells _____.   A…

A: The human heart is located in the mediastinum (It is the central place in the chest or thoracic…

Q: Which is not true about our heart A. ventricular systole squeezes blood to the lungs and the body B.…

A: Heart is a muscular organ that helps puno blood to different body organs. It has four chambers,…

Q: The thickest part of the heart wall is thea. pericardium.b. epicardium.c. myocardium.d. endocardium.

A: The body comprises a total of eleven organ systems, and each of them is specialized to perform a…