Answered: Which of the following acts as the…

Which of the following acts as the natural pacemaker of the heart? Group of answer choices SA node Either the SA node or the AV node Purkinje fibers AV node

Biomedical Instrumentation Systems

1st Edition

ISBN:9781133478294

Author:Chatterjee

Publisher:Chatterjee

Chapter2: Anatomy And Physiology

Section: Chapter Questions

Problem 6Q

See similar textbooks

Related questions

Q: Which ion movement causes depolarization in the contractile cells of the heart? Ca++ leaving the…

A: The human heart is a muscular blood pumping organ made up of electrically excitable cardiac muscle…

Q: Which of the following lists the events of the cardiac cycle in thecorrect order?a. both atria…

A: Answer- Cardiac cycle is the process by which one total heartbeat is completed. It comprises of…

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: Which of the following is incorrect? Group of answer choices The walls of the cappillaries are…

A: Blood is a liquid comprising of plasma, red blood cells, white blood cells, and platelets which is…

Q: . ECG depicts the depolarization and repolarization processes of a cardiac cycle. In the ECG of a…

A: The electrocardiogram (ECG) is the total amount of the action potentials of millions of…

Q: Given these events, the correct sequence of the cardiac cycle is: i. Atrial diastole ii. Atrial…

A: In the cardiac cycle, diastole means that the heart chamber is filled with blood received from the…

Q: The steep depolarization phase of an action potential in the SA node of the heart is caused…

A: INTRODUCTION The action potential is a quick rise and sudden fall in voltage and membrane across a…

Q: Which part of the heart is responsible for the muscular contractions that pump blood through it?…

A: Heart is a muscular organ present in thoracic cavity which helps in blood flow through out the body.

Q: Sino-atrial node is called the pacemaker of our heart. Why?

A: The SA (sino-atrial) node is a neuron’s specialized bundle that is located in the upper part of…

Q: What is the relation of Electrocardiogram components with Heart function. Please briefly explain at…

A: Electrocardiogram (ECG) is also known as EKG is a device for recording the electrical activity of…

Q: Which row shows the chambers of the heart, from those with the thickest walls to those with the…

A: The human heart has two atrium which are separated by the interatrial septum from each other. There…

Q: The heart is resting during Select one: ventricular systole. the ejection period. ventricular…

A: Cardiac cycle The cardiac events that occur from the beginning of one heart beat to beginning of…

Q: Choose the best answer Which of the following lists the events of the cardiac cycle in thecorrect…

A: The cardiac cycle comprises of the phases of heart activities through a complete heartbeat, that is,…

Q: What may not be a reason for the evolution of heart valves from ball and cage to bi-/trivalve…

A: The cardiovascular system consists of the heart and the blood vessels. The heart is the pumping…

Q: Read the following statements: Statement A: Ventricular diastole leads to reduction in ventricular…

A: A heart is a muscular pumping organ of the circulatory system along with the blood and blood…

Q: Isovolumetric contraction" is a phase in the cardiac cycle in which the volume of a particular heart…

A: Isovolumetric contraction" is a phase in the cardiac cycle in which the volume of a particular heart…

Q: Which of the following best describes the flow of oxygenated blood in the heart? O Pulmonary veins -…

A: Human heart consists of 4 chambers: two upper chambers (right and left atria) and two lower chambers…

Q: The heart layer the lines the chambers is called the ___.

A: Question- The heart layer the lines the chambers is called the ___.

Q: Drag the steps below and place them in the order of blood flow through the heart. First: Second:…

A: Circulation system It is a network consisting of blood, blood vessels, and the heart. This network…

Q: A premature ventricular contraction (PVC) indicates which of the following

A: This question is based on the physiology of heart.

Q: Why is the left ventricle of the heart thicker than the right ventricle

A: Heart pumps blood to the body. Human heart has four chambers, 2 atria and 2 ventricles. Both the…

Q: The image above shows the change in blood volume in the left ventricle through time. Identify what…

A: Answer: CARDIAC CYCLE = This is the cycle in human system which involves the conversion of…

Q: Which chamber of human heart pumps fully oxygenated blood to aorta and hence to the body? A.…

A: The human circulatory system consists of three main parts: lungs, heart, and blood vessels including…

Q: The upper chambers of the heart are the: A) capillariesB) atriumsC) aortasD) ventricles

A: The organ system is the group of organs that functions together to maintain the biological system of…

Q: An individual presents with cardiac tamponade. Their heart would be the most efficient in pumping…

A: cardiac tamponade is a medical condition where there is build up of fuilds in the pericardial sacs.…

Q: Fill in the blank: The period during which a heart chamber is relaxing is called…

A: Human Heart is a four-chambered, fibro-muscular organ. There are two atria through which the heart…

Q: Choose all the statements that are correct. When the heart beats, first the right side of the heart…

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

Q: The electrocardiogram (EKG) is a tracing of the electrical events in the myocardium cardiac output…

A: Electrocardiogram is a very popular technique, used in medical biology, to determine the problems…

Q: During contraction of heart, what prevents backflow of blood?a) Thin walls of atriab) Thick muscular…

A: The heart is the muscular organ of the circulatory system of the vertebrates. The apes and mammals,…

Q: All of the following statements regarding the cardiovascular system are correct, EXCEPT blood is a…

A: The circulatory framework is comprised of veins that divert blood from and towards the heart.…

Q: stions. Which structure is labelled "E"? Aorta Black arrows indicate direction of blood flow Blue…

A: The human heart is a muscular organ that pumps blood. It is about the sized of a clenched fist. The…

Q: What is the tissue type for the following structures of the heart Fibrous pericardium Serous…

A: The tissue is the group of cells, that have the same function and structure. Different organs…

Q: The atrioventricular valve on the same side of the heart as the origin of the aorta is the _____…

A: ATRIOVENTRICULAR VALVE It is the valve present between atrium and ventricle. It allows the flow of…

Q: The cardiac cycle includes all the events associated with the flow of blood through the heart during…

A: * cardiac cycle is series of events of heart from beginning of one heartbeat to the beginning of the…

Q: The first heart sound represents which portion of thecardiac cycle?a. atrial systoleb. ventricular…

A: The heart is a hollow muscular organ. It pumps the blood via circulatory system through rhythmic…

Q: During heart development, the primary outcome of cardiac looping is Fusion of the aortic sac vessels…

A: Heart development occur in various stages.

Q: True or false: Impulses through the conduction system of the heart follow the ordered path SA…

A: INTRODUCTION SA node causes the atrial muscle contraction. From here the signal travels to AV node…

Q: The structures in the heart which assure the proper direction of blood flow through that organ are…

A: In the heart there are 4 chamber . 2 upper chamber called right and left atrium. and 2 low chamber…

Q: The cardiologist used a stethoscope to listen to your heart. He heart rapidly beating sound or…

A: Electrocardiography is a method used to record the electrical activity of the heart. It records the…

Q: If the AV node was damaged, the parts of the heart that would fail to contract are (the) O a. right…

A: The cardiovascular system is a network of arteries and veins in which the heart pumps blood. One of…

Q: The intrinsic heart rate is established by O Sympathetic innervation of the SA node O Autorhythmic…

A: Answer: Intrinsic heart rate is defined as the rate at which heart beats when all cardiac neural and…

Q: The electrocardiogram is a test by which is it possible to:

A: The electrocardiogram is a test by which is it possible to: Answer. detect abnormalities in the…

Q: Which of the following are ways that substances can pass into or out of capillaries? Select ALL…

A: Option (d) simple diffusion through capillary wall cells

Q: . Evaluate the following statements as true or false T/F T/F T/F T/F T/F Jet lesions are most common…

A: The heart is the main organ of the cardiovascular system which is self-beating and can be myogenic…

Q: The conduction system of the heart: 1. SA node 2. AV node 3. 4. __ 5. -

A: The heartbeat is controlled by a set of nodes, cells, and impulses known as the cardiac conduction…

Q: The left and right sides of the heart are separated by a structure called the ___ .

A: Heart is chief pumping organ in the circulatory system which supply blood to each and other parts of…

Q: A membrane called the _____ covers the heart. A membrane superficial to this membrane is the _____.…

A: The pericardium is the thin sac-like covering of the heart. It lubricates the heart and is required…

Q: Which fiber system is the first to depolarize in a cardiac cycle? Group of answer choices AV node…

A: Question - Which fiber system is the first to depolarize in a cardiac cycle? Group of answer choices…

Q: Which of the following statements regarding congestive heart failure is correct? Group of answer…

A: Congestive heart failure (CHF) is a condition when muscles of the heart are affected to pump the…

Q: Which of the events below does not occur when the semilunar valves are open? A Ventricles are in…

A: The heart valves regulate the blood flow into and out of the heart. The normal human heart contains…

Question

Which of the following acts as the natural pacemaker of the heart?

Group of answer choices

SA node

Either the SA node or the AV node

Purkinje fibers

AV node

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.

Similar questions

The term _________________ ECG means a record or picture of the electrical activity of the heart electr/o means electric, and cardi/o means heart.
Which heart chamber has the thickest wall? a. right atrium c. left atrium b. right ventricle d. left ventricle
The pulmonary trunk and aorta are derived from which primitive heart structure? bulbus cordis primitive ventricle sinus venosus truncus arteriosus
Visit this site (http://openstaxcollege.org/l/heartvalve) to observe an echocardiogram of actual heart valves opening and closing. Although much of the heart has been removed from this gif loop so the chordae tendineae are not visible, why is their presence more critical for the atrioventricular valves (tricuspid and mitral) than the semilunar (aortic and pulmonary) valves?
In which of the following does a blood vessel burst, sending bloodinto the surrounding tissues, such as the brain.a. angina pectorisb. a heart attackc. atherosclerosisd. a stroke
The lower chambers of the heart are the: A) aortasB) capillariesC) ventriclesD) atriums
Which primitive area of the heart will give rise to theright ventricle?a. bulbus cordisb. primitive ventriclec. sinus venosusd. truncus arteriosus
Which of the following statements is correct? Group of answer choices Veins carry blood away from the heart A stenotic heart valve would restrict the flow of blood through the valve Semilunar valves are located between the atria and the ventricles The right ventricle pumps blood to the systemic circulation
The upper chambers of the heart are the: A) capillariesB) atriumsC) aortasD) ventricles
Which component of the heart conduction systemwould have the slowest rate of firing?a. atrioventricular nodeb. atrioventricular bundlec. bundle branchesd. Purkinje fibers
Which chamber of human heart pumps fully oxygenated blood to aorta and hence to the body? A. Right AuricleB. Left AuricleC. Right VentricleD. Left Ventricle
Automaticity of the heart is the result of: Group of answer choices K+ leaking into the cell. Na+ leaking into the cell. K+ leaking out of the cell. Ca++ leaking out of the cell. more than one of the above.