QUESTION 5 Which of the following statements about venous blood pressure are true? Select ALL correct answers: Pressure in veins is much lower than pressure in arteries Arterial blood pressure fluctuates as the heart squeezes and relaxes, but venous blood pressure does not Valves in veins help prevent blood from flowing backward Contraction of skeletal muscles in the legs helps move venous blood back up towards the heart

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 side(s) of the heart would affected by high pressure in the pulmonary circuit? Which side(s)…

A: BASIC INFORMATION  PULMONARY CIRCUIT the blood pumped by right ventricles enters into the pulmonary…

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: Some diabetics develop abnormal ECGS before they show obvious symptoms of heart disease. For…

A: Electrocardiogram(ECG or EKG) a painless diagnostic test is performed to measure the electric…

Q: What would you expect to occur in heart failure?

A: The heart failure is also known as cardiac failure. It refers to the inability of the heart to…

Q: Which types of muscle can be inhibited? only smooth muscle smooth and cardiac only skeletal muscle O…

A: Muscles are the most essential structural components of the human body responsible for movement,…

Q: Phase 1 Phase 2 Phase 3 Phase 0 Phase 4

A: Action potential is a brief change in voltage across the cell membrane in a the heart cells. This…

Q: Why do peripheral arteries lack the valves that are commonly present in peripheral veins?…

A: Heart is the principal organ of the circulatory system. Heart pumps blood and keeps it flowing…

Q: Which are effective treatment options for hypertension?   Select 3 correct answer(s)     Lose…

A: Hypertension (high blood pressure) is a frequent disorder in which the long-term force of blood…

Q: Which of the following would not be a branch of the thoracic aorta?     posterior intercostal…

A: The aorta is the main artery that arises from the heart and then divides further into major arteries…

Q: he left ventricle:   Question 21 options:   Has thinner muscular walls than does the right…

A: Our heart is a muscular organ that is like a fist in its size and is located just behind with…

Q: Explain the term 'cardiac output' and discuss how cardiac output can be altered by heart rate and…

A: Note:- Sticking to our guidelines I have answered only ist three questions. Please ask rest of the…

Q: Which of the following is the THICKEST? Right ventricle endocardium Right atrial epicardium Right…

A: * Heart is the main pumping organ in body.The function of heart is to pump blood throughout the body…

Q: All of the followings are correct about the myogenic pacemaker except, --------------------- They…

A: The cardiovascular system is a principal organ system of the human body concerned with the transport…

Q: Smooth muscle is responsible for vasoconstriction. True O False

A: Cells are the basic structural and functional unit of all known organisms which help in the process…

Q: Name the three muscles making up heart wall? Where is each located and their respecFve funcFons?

A: * Heart wall consists of  layers : Pericardium Epicardium  Myocardium Endocardium Pericardium is…

Q: Why doesn’t blood volume change during isovolumetric ventricular systole?

A: Isovolumetric ventricular systole is the phase when the left ventricular phase rises above the…

Q: Which of the following is/are true for the ejection phase of the cardiac cycle? Check all that…

A: For a single complete heartbeat, the pattern of the heart's contraction and relaxation is referred…

Q: Explain how the manifold design of arteries and arterioles/capillaries regulate velocity of blood…

A: Arteries are large blood vessels that carry oxygenated blood away from the heart to the organs and…

Q: When the heart's electrical system misfires, it's called atrial [term]. The heart starts generating…

A: The heart's electrical system is also called the conducting system of the heart. This system…

Q: After being rescued from the pool by the lifeguards, Marco now makes his way to the powerlifting…

A: Exercise is the state of doing physical activity by the body involving voluntary movement of the…

Q: Which ONE of the following statements is TRUE? OA Cardiac myocyte contraction results primarily from…

A: Given here are some statements . Following I will be discussing which among them is correct and…

Q: What would be the drawback of cardiac contractions being the same duration as skeletal muscle…

A: Introduction: The cardiac muscles are responsible for pumping blood into the blood vessels through…

Q: Describe what the following variables are and how each impacts cardiac output: End diastolic volume,…

A: The amount of blood that the muscular thoracic cavity organ called the heart pumps in a minute…

Q: Let's review the electrical events that occur during a heartbeat. Match each phase of the ECG in the…

A: A. The atria depolarize ( P wave)B. The ventricles repolarize (T wave)C. (Diastolic interval; the…

Q: Which is NOT a factor that increases stroke volume with endurance training.       Reduced cardiac…

A: ANSWER;- Reduced cardiac and arterial stiffness is not a factor that increases stroke volume with…

Q: hich of the following is true for the ejection phase of the cardiac cycle  select all that apply…

A: The ejection phase of the cardiac cycle begins when the intraventricular pressure exceeds the…

Q: With endurance athletes, an increased stroke volume at rest will occur because of   Select 3…

A: Stroke volume is defined as the amount of blood that can be pumped out by heart per beat.

Q: Which of these accounts for the similarity between the P wave duration and the QRS complex duration…

A: This question dives into the complexities of cardiac physiology, particularly centering on the…

Q: It ensures a unidirectional flow of blood between the left ventricle and its associated artery.…

A: Heart is a four chambered organ. Right atria, right ventricle, left atria and left ventricle are the…

Q: the liquid viscosity is density intendent. True O False during the diastolic of the cardiac cycle…

A: Introduction  When the membrane potential of a specific cell region rapidly rises and falls, it is…

Q: Put the following events in the proper order for cardiac conduction. Group of answer choices:   SA…

A: The activity of the heart depends upon electrical impulses.

Q: Inadequate tissue perfusion in hypovolemic shock occurs due to:   Question 9 options:   Decrease…

A: Hypovolemic shock is a medical emergency condition characterized by a severe decrease in the volume…

Q: Which formula correctly expresses cardiac output (O) through the end-diastolic volume of the…

A: The volume of blood being pumped by the left and right ventricle of heart per minute is known as…

Q: 140 120 100 OF Left ventricular 80 D pressure (mm Hg) G 60 20 50 70 120 Left ventricular volume (mL)…

A: NOTE: Options are numbered as 1, 2, 3, and 4.  Our heart is the major pumping muscular organ of the…

Q: In the heart, lub - dub refer to, in order, the O closing of all valves simultaneously O closing of…

A: The cardiac cycle explains the cardiac event that occurs during the contraction and relaxation of…

Q: During which phase of the cardiac cycle do the ventricles begin to contract while the semilunar…

A: Right semi lunar valve is present between the right ventricle and the Pulmonary artery . it pumps…

Q: The marks a spot of dead myocardial cells. How does this change the depolarization and muscle…

A: Myocardial cells myocardial cells are located in the heart forming a branched network in the heart,…

Q: Calculate the heart rate. This is a 6-second strip. O 80 O 40 O 120 O 60

A: When the cardiac rhythm is regular, the heart rate can be determined by the interval between two…

Q: Question 9 Smooth muscle is responsible for vasoconstriction. True False

A: Introduction :- Contracting is the primary function of smooth muscle. There are two forms of smooth…

Q: The first phase of the cardiac cycle is This is when a lot of blood is in the atria, which causes…

A: The cardiac cycle reffers the sequence of events which takes place during completionon of one…

Q: 5. Would defibrillation be recommended for someone producing this electrocardiogram? yes no

A: Electrocardiogram(ECG or EKG) is a medical test that is used in recording the electrical signals…

Q: With a defect in the ventricular wall, which part of the cardiac conduction system might be…

A: Question 9 The cardiac conduction system is the electrical system of the heart that is responsible…

Q: Capillary Refill Results: Table 2 Right Hand Refill Time Left Hand Refill Time Thumb Middle Pinky 1.…

A: Capillary refill test is a rapid test used for assessing the blood flow through peripheral…

Q: Which ECG component represents peak systole? O S-T segment O P-R interval O P-R segment

A: In electrocardiogram (ECG) beginning of ventricular systole is marked by deflection of QRS complex.…

Q: If the Mitral Valve failed in a patient, would the blood flow back into the Right Ventricle?…

A: Heart is chief pumping structure in the circulatory system that consists of 4 chambers : Right…

Q: Which of the following changes to blood flow is expected to occur as a result of dynamic exercise?…

A: Blood is pushed through the blood vessels by the action of the heart and it is circulated throughout…

Stress

Stress is defined as the feeling of being overwhelmed or unable to cope with emotional or mental pressure. Any event or action that makes a person annoyed, furious, or nervous can trigger it. Chemical changes in the body caused by stress can cause blood pressure, blood sugar levels, and heart rate to rise.