How could the cardiovascular system maintain constant mean arterial pressure following vasodilation and decreased resistance in peripheral blood vessels? O increasing stroke volume or heart rate O decreasing stroke volume or heart rate O increasing stroke volume or decreasing heart rate O decreasing stroke volume or increasing heart rate

Q: Bob has a body mass of 74 Kg His blood pressure is 134/74 Heart rate is 68 b/min His cardiac…

A: Given: Body mass of Bob = 74kg blood pressure = 134/74 heart rate =68 per minute  Cardiac output =…

Q: stroke volume, end systolic volume, end diastolic volume, resistance, venous return, mean arterial…

A: Cardiac output is the volume of blood being pumped by the heart, by the left and right ventricle,…

Q: during a procedure, a patient's end diastolic volume was found to be 127mL. The end systolic volume…

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

Q: Cardiac output increases during exercise due to an increase in both heart rate and stroke volume.…

A: The cardiovascular system has an important role in regulating homeostasis in the human body by…

Q: In terms of the mechanics of blood flow, discuss why a pulse is evident on the arterial side but not…

A: The movement of blood in the different vessels refers to as blood flow. The blood generally flows…

Q: After exercising many of you saw an INCREASE in the amplitude of the pulse transducer suggesting…

A: The sympathetic nervous system is stimulated by exercise and various changes take place in body as a…

Q: What effect does a drug have that block the calcium channel in a cardiac muscle cells? What is the…

A: A calcium channel is an ion channel which shows selective permeability to positively charged calcium…

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: Consider the equation cardiac output (CO) = stroke volume (SV) X heart rate Which of the following…

A: Afterload is the pressure the heart must work against to eject blood during systole. When…

Q: A decrease in parasympathetic stimulation of the SA NODE Increase in HR;decrease in cardiac output;…

A: The heart has an autorhythmicity trait that allows it to beat without being controlled by the…

Q: Sympathetic stimulation of the veins Causes vasodilation and an increase in stroke volume Causes…

A: Autonomic nervous system (ANS) is responsible for controlling involuntary muscle movements and…

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: Based on your data, how was your heart rate different during the first and last 10 seconds…

A: Heart rate is the pounding of the heart in one minute. Normal heart rate is -60 to 100beats /…

Q: Leaky Na+ channels in the cells of the SA Node do which of the following?   a-allow a slow…

A: d-allow a slow depolarization that eventually reaches the threshold for voltage-gated Ca2+ channels.

Q: Extreme increase in the heart rate can cause a decrease in the CO if ventricular filling is…

A: The amount of blood the heart pumps per minute is known as cardiac output, and it is measured by…

Q: Individual A B C Resting Heart Rate (beats/min) 70 98 35 Stroke Volume (ml/beat) 70 50 140 Cardiac…

A: Heart is the major organ of blood pumping and circulation.  It sends oxygenated blood to different…

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: Why is it possible for acetylcholine to actually cause an increase in stroke volume, even though…

A: Acetylcholine is one of the most vital neurotransmitter in the human body, that is seen in both the…

Q: Moving from a SUPINE to a STANDING position result in an:  a. decrease in heart rateb. increase in…

A: The question is asking about the physiological changes that occur in the body when moving from a…

Q: Athletes often have a slower resting cardiac rate than the average (a condition called athlete’s…

A: Heart rate is essential as the work of the heart is so important. Throughout the body, the heart…

Q: Where does a ventricular contraction begin? O In the left ventricle O None of these is correct O In…

A: Rught Ventricular contraction begins when the righr ventricle contract and pours its deoxygenated…

Q: An athlete suddenly develops hypoglycemia. You are aware that when blood glucose levels fall, O…

A: To determine: The answer for two questions from the following options. What happens when blood…

Q: In the Sino-Atrial Node which is not true? O A. Shows spontaneous (oscillatory) electrical behavior.…

A: The SA node, which is commonly known as the pacemaker is a half moon like cluster of  myocytes…

Q: Which of these is an example of autoregulation? O The increased force response of the heart…

A: Autoregulation is a process that is well equipped in various biological systems within the body. It…

Q: This will result in:

A: This will result in an increase in preload.Preload is the amount of force that stretches the…

Q: Match the pieces of the negative feedback arc that regulated the increase in stroke volume seen…

A: Answer given in step 2. Thank you.

Q: cardiac output drops, then A and B • A and C Blood flow must decrease Blood flow must increase  The…

A: The objective of the question is to understand the physiological changes that occur when cardiac…

Q: If you were running late for lab and had to run to get there on time, the sympathetic neurons of…

A: The sympathetic nervous system (or SNS) is involved in the innervation of major organ systems across…

Q: The pulse rate will on standing and the pulse rate standing after 5 minutes will to normal.…

A: Pulse rate is commonly called heart rate, and it refers to the number of contractions caused by the…

Q: Predict the effects of a drug that blocks the sympathetic nervous system on blood pressure and heart…

A: Sympathetic nervous system (SNS) and para sympathetic nervous system are the two main divisions of…

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: Central venous pressure is increased by

A: Central venous pressure (CVP) refers to the pressure in the vena cava that is used as an estimation…

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: 8. The closure of the tricuspid valve separates which two events in the cyclic changes of the left…

A: A single cardiac cycle includes all the events associated with one heartbeat. Thus, a cardiac cycle…

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: Why would blocking the action of a vasoconstriction lower blood pressure?

A: Circulatory system is a type of body system in which circulation of body fluids occur and…

Q: If SA node (=natural pacemaker) fıring rate is 100 potentials per minute, but resting heart rate of…

A: Introduction: Some cardiac tissues are concerned with the initiation (impulse generation), and…

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: The pausing of electrical conduction at the AV node is critical to heart function because O ATP…

A: AV mode, also known as atrioventricular mode, refers to the electrical conduction pathway that…

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: Cardio 2 Question 2 Unanswered Which of these phrases accurately describes Starling's Law? Increased…

A: The Starling law, also known as frank-starling law, and the Starling mechanism is related to the…

Q: Why is your heart rate high after running a short distance, but not as elevated after running a much…

A: Introduction: To maintain blood circulation throughout the body, the heart beats nonstop. Its rate…