he arteries that pass through the heart muscle are necessary for delivering enough oxygenated blood to the eart. When the heart ventricles contract (in systole) the pressure around these vessels increases. The heart nuscle is likely to be relatively deprived of oxygen when the pressure inside the arteries minus the pressure outside the arteries is greater than zero. when the pressure inside the arteries minus the pressure outside the arteries is less than zero. when the pressure inside the arteries minus the pressure outside the arteries is greater than O zero and the stabilizing force of the vessel architecture is overcome

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: What is the effort of different types/intensity of exerise on heart rate

A: We can measure exercise intensity using target heart rates, the talk test, or the exertion rating…

Q: Blood entering systemic capillaries has the same oxygen and carbon dioxide concentration as the…

A: The respiratory system and circulatory system are responsible for gaseous exchange (oxygen and…

Q: Which of the following is TRUE of the cardiac action potential? O The cardiac action potential…

A: The muscle action potential is generated due to the contraction and relaxation of the muscle fiber.…

Q: Create a process flow that will the circulatory pathway starting from the Vena Cava

A: Each time your heart beats, it pumps out oxygen-and supplement rich blood to your body. Blood moves…

Q: the patient's heart makes a sound at systole, assuming it is the S1 sound made by closing of valves,…

A: Heart is the pumping organ in the body. It pumps the blood to various parts of the body.

Q: Define Starling law of the heart

A: The heart is the blood regulating organ of the body. It contains pericardial walls and blood vessels…

Q: In the following graph, curve (line) N represents a vascular function curve (venous return curve) in…

A: Introduction :- Venous return is the flow of blood from the periphery back to the right atrium, and…

Q: Which of the following contributes to 1st heart sound during systole? Select one: Flow of blood…

A: In the human circulatory system, the heart is considered the central organ that plays a significant…

Q: The pressure in the veins sufficiently high to drive the flow of blood into the heart is callec O…

A: The heart is a fist-sized organ that pumps the blood throughout the body. It is the primary organ of…

Q: a patients blood test showed high levels of myocardium-specific troponin, and her ECG showed ST…

A: ST elevation means that ST segment in ECG is abnormally high above the baseline. ST segment…

Q: Which factors reflect the oxygen demands of the myocardium?     heart rate multiplied by…

A: Myocardial oxygen demand can be defined as the amount of oxygen that is required by the heart to…

Q: Which best describes blood flow through the heart? oxygenated blood comes into the heart's left…

A: The heart, the lungs, and the blood vessels function to form the round circulatory system. The 3…

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

A: Human heart is four chambered. The left half of the heart act as the pump for systemic circulation…

Q: A decrease in the effective circulating blood volume occurs in the circulatory system when moving…

A: The cardiovascular system is an organ system which distributes blood to all the parts of the body…

Q: Plot the tension in the left ventricle, assuming that only the diameter changes during the cardiac…

A: The blood flows through the systemic and pulmonary circulation following a specific pathway known as…

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: The maintenance of pressure in the arterial tree in diastole is primarily related to which of the…

A: *The arterial system is divided into layers called tunics, which include the tunica intima, tunica…

Q: the amount of blood pumped by the ventricucles each is referred to as

A: The heart of a human being consists of 4 chambers with two on the right side and two on the left…

Q: You are studying bulk flow in a tissue. You have measured the following: Blood pressure at the…

A: The objective of the question is to understand the dynamics of bulk flow in a tissue, specifically…

Q: An increase in heart rate leads to a increase in arterial pressure leads to a in end diastolic…

A: The heart is the central organ of the cardiovascular system of the body. It is a myogenic organ that…

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: The second heart sound is caused by

A: Answer:  The Lub - Dup sound produced by the heart is basically the closing of the heart valves.

Q: visceral pericardium endocardium myocardium parietal pericardium pericardial cavity The heart is…

A: The human heart pumps blood during the frame thru the vessels of the circulatory system, providing…

Q: When person is standing quietly, the pressure in the capillaries of the feet can reach as high as…

A: Capillaries are abundantly found in the organs that are metabolically active as the heart, glands,…

Q: Imagine that you are feeling very anxious as you walk to the podium to deliver a speech. If your…

A: Ans: Cardiac output: The cardiac out put is the amount of blood pumped by heart to different organs…

Q: The sinoatrial node is also called the A. PacemakerB. Action potentialC. Resting membrane potent

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Q: Cardiac output is determined by what two variables ? preload and afterload end - diastolic volume…

A: Cardiac output, otherwise called heart output, is a term utilized in heart physiology that portrays…

Q: A blood clot in the first vessel branching from the aortic arch would affect the: left arm O lungs…

A: Circulatory system is a type of body system which is involved in circulation of body fluids  ,…

Q: mean arterial pressure is a product of  heart rate and cardiac output none of the abouve cardiac…

A: Mean arterial pressure is that average arterial pressure which is present in one cardiac cycle. It…

Q: During the isovolumetric periods there is no change in volume.

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Q: Which of the following is not true about the resting Cardiac membrane potential? OA. The membrane…

A: Action potentials are the means of signal transmission generated and conducted by neurons in an…

Q: Which of the following statements is correct: A rapid ejection occurs during early- ventricular…

A: A. A rapid ejection occurs during early-ventricular systole: This statement is incorrect. The rapid…

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: Which of the following are true of the pericardium? There is a small amount of fluid found deep to…

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Q: Considering the left ventricle, why does the ventricular volume have to decrease during ventricular…

A: Protruding of the mitral valve into the left atrium during isovolumetric contraction results in a…

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: Once you have studied the wiggers diagram   Create your own outline of the steps with a brief…

A: Cardiac cycle:The cardiac cycle describes the human heart's activity from the start of one heartbeat…

Q: Mean arterial pressure is likely to decrease when Oblood viscosity decreases heart rate increases…

A: Mean arterial pressure (MAP) is one of the key indicators of cardiovascular health. It is a measure…

Q: During the production of the waveform of the EKG indicated by the arrow, blood would pass through…

A:

Q: Number of double circulations completed by the human heart per minute under resting conditions is

A: Components of closed circulatory system It consists of heart to pump the blood, blood vessels like’s…