Many congenital heart defects cause mixing of oxygenated and deoxygenated blood. This is because: These can be a failure of the systemic and pulmonary circuits to become separated immediately after birth The weakened heart muscle causes backflow in the circulation The heart valves do not form normally O Blood vessels are in the wrong place

Q: The aorta, the largest artery in the body (in diameter), carries oxygen-rich blood away from the…

A: Aorta is the blood vessel that is most closely attached to..

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: A disease is characterized by an abnormally high number of red blood cells. This disease makes the…

A: Blood doping

Q: If the left side of the heart does not pump well enough to send all the blood contained in the…

A: The heart has four chambers:  1. The two superior which receive chambers are the atria 2. Two…

Q: Which one of the following is a matching pair?  A Pulsation of the radial artery - values in…

A: Heart is the muscular organ in most animals that is involved in pumping blood through blood vessels.…

Q: Which of the following conditions is characterized by the accumulation of plaque in a blood…

A: Heart and blood vessels form the cardiovascular system. Its main function is to transport oxygen,…

Q: Which of the following contains blood with a relatively high oxygen content? Group of answer…

A: Circulatory system is one of body system  that mainly comprises of :-  1 ) Heart  2 ) Blood  3 )…

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: 1 pc Which of the following best describes diastole? O The atria contract which force the…

A: Diastole :- In a cardiac cycle, a period when heart muscles attain relaxation which is accompanied…

Q: The blood vessels with venous blood proceeding from the right ventricle to the lungs are the Group…

A: Heart : It consists of four chambers i.e. right atrium, right ventricle, left atrium and left…

Q: The human heart is A) Neurogenic heart B) Myogenic heart O C) Pulsating heart D) Ampullary heart

A: Introduction:- The human heart is an organ that pumps blood through the circulatory system's veins,…

Q: A patient is admitted to the ER complaining of chest pains and difficulty breathing. He states that…

A: Myocardial infarction This is called heart attack occurs when one or more regions of the heart…

Q: he arteries that pass through the heart muscle are necessary for delivering enough oxygenated blood…

A: When the pressure inside the arteries is less than the pressure outside the arteries (due to…

Q: Which of the following correctly ranks pressures during isovolumetric contraction of a normal…

A: A normal cardiac cycle is characterised by revenant atrial and cavity contractions and…

Q: A key role of the atrioventricular node is to   act as a barrier to prevent the electrical impulse…

A: Heart pumps blood through a system of blood vessels, called the circulatory system. The heart is a…

Q: Which of the following is NOT one of the functions of the cardiovascular system? a) To exchange…

A: The cardiovascular system or the circulatory system comprises the heart and the network of blood…

Q: Fill in the following with the appropriate heart chamber,including the side it is on. Receives blood…

A: Heart is the vital organ of human body that help in transit of blood throughout the body

Q: An increase in end-diastolic volume always causes an increase in stroke volume in a normal heart…

A: Stroke volume It is the amount of blood that is forced out from the ventricle per cardiac cycle. It…

Q: The purposes of arteries are all these EXCEPT ___.     carry blood from left ventricle to the…

A: Blood vessels are the tubular structure carrying out the blood within them. These includes arteries,…

Q: Path of Blood in Heart Ventricles pump blood to body or lungs Atria fill with blood from body or…

A: The blood vascular system or the circulatory system is the transport system of the body. The…

Q: During systemic circulation, blood leaves the __________."   A right atrium and goes directly to…

A: Complete double circuit circulatory system is found in crocodiles, birds and Mammals. Their heart is…

Q: A child has chronic strep throat. If this condition is not treated, what heart disease can occur?…

A: The respiratory system is a network of tissues and organs that help an organism to breathe. In…

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

A: Heart- a organ in most of the  animals that pumps blood through the blood vessels of the…

Q: In humans the wall of the left ventricle is thicker than that of the right ventricle. This…

A: Cardiovascular system The circulatory system is also referred to as the cardiovascular system. It is…

Q: Which of the following is/are true concerning the opening and closing              of the  cardiac…

A: Cardiac valves present in the heart regulate the flow of blood from one chamber of the heart to the…

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: The blood vessels through which there is an exchange of nutrients and gas between the blood and body…

A: Blood is a constantly circulating fluid providing the body with nutrition, oxygen, and waste…

Q: In atrial fibrillation, the atria do not contract correctly, and not all blood exits this chamber.…

A: Pulmonary embolism can be a serious complication resulting from right atrial fibrillation. One of…

Q: he inferior vena cava brings blood from the lower regions of the body and empties into the…

A: the inferior vena cava is the largest vein and it carries deoxygenated blood from the lower body…

Q: Draw a flow chart of the circulatory system that includes the movement of blood from the Vena Cava…

A: Blood is the fluid that courses through the circulatory system and achieves many functions in its…

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: What is caused by an accumulation of blood in the pericardial space that results in impaired…

A: Cardiovascular disorder consists of diseased vessels, structural problems and blood clots.  Common…

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: What causes the atrial filling of blood?   high pressure in the atria   low pressure in the…

A: ATRIAL FILLING:- During the cardiac cycle, there is an alternating sequence of contractions and…

Q: What is the function of the valves in the heart? promote contraction of the ventricles O prevent…

A: Heart:  It is located in the chest cavity. It is protected by the layer called pericardium. The…

Q: Which of the following statements about the cardiovascular system is TRUE? (select multiple) o The…

A: Question - Which of the following statements about the cardiovascular system is TRUE? (select…

Q: The pointy, inferior part of the heart is the ___while the ___ is much broader with multiple blood…

A: This is a question about the heart.

Q: What is the key difference between veins and arteries? O Veins carry oxygen-rich blood; arteries…

A:

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

A: The cardiac cycle consists of a period of relaxation called diastole, during which the heart fills…

Q: Which heart chambers are used as route between heart and the entire body? right atrium, right…

A: Heart is a pumping organ. It is present in the circulatory system.

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: why is it important for a human heart to develop early and benign functioning

A: The fetal heart is the first developmental and functional organ.

Q: Blood within the pulmonary veins returns to the:     right atrium     right ventricle     left…

A: Closed circulatory system is a type of circulatory system in which blood flows inside the blood…

Q: The valve is also known as the mitral valve. One-way flow of blood from the right ventricle is…

A: Heart is the pumping organ and it transport blood to all the body parts.it is part of the…

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

A: The cardiac cycle is a series of electrical and mechanical occasions that get up during the levels…

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: In the pause between the 2nd sound (dub) of one beat and the 1st sound (lub) of the following beat…

A: The heart has two major sounds which are referred to as lub and dub. The first sound of the heart is…

Q: In a healthy heart, which of the following statements is TRUE? A) Depolarization of the…

A: Answer- Option C. It's description has been mentioned in next step that is as follows-:

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

A: A cardiac pacemaker is a medical device that sends electrical impulses to the heart muscle chambers…

Q: False statements about the cardiovascular system? (select multiple if necessary) o Deoxygenated…

A: The cardiovascular system is consisting of heart, arteries, veins and blood capillaries that are…