JacobKrueger_SPHE314_Week5Assg2

3. BI Heart muscle cell 00000000 silence! GOOGGOL 00000000 current high (everyone is quiet) current 00000 fibriliation కొ ం defibrillation 10r (1) In your own words, what is the main function of a defibrillator? (2) What scenario or situation was the defibrillator compared to? Give evidence. (3) What do we need if we want our defibrillator to work effectively?

ERCISE 36 Electrical Activity of the Heart Use this grid to graph the heart rates observed after exercise. Be sure to label your graph completely and accurately. bon Put in Order (rearrange these heart structures in the order through which electrical signals are conducted in a single cardiac cycle) Put in Order 1. atrial myocardium AV bundle branches nim 2. AV bundle AV node subendocardial (Purkinje) fibers SA node 3. 4. 5. ventricular myocardium 6. Fill-in (complete each statement with the correct term) 7. 1. Relaxation of a heart chamber is called _?_. 2. Contraction of a heart chamber is called _?_. 3. The portion of the ECG that represents ventricular repolarization is the _?. 4. Leads I, II, and III together are called the _?_ leads, or appendicular leads. 5. ? is the condition of elevated heart rate. Fill-in 1. 2. 3. 4. 5. a 0010 bu Floouior Inc All rights reserved.

Show all working explaining detailly each step Solution should be typewritten with a computer keyboard!

4.4. On the circulatory system, what are the correct statements? PHYSIOLOGY_advanced  (OJO) Pacemaker cells of the heart are neurons with a stable resting membrane potential. Pacemaker cells of the sinus node, located at the left atrium, determine the heart beat frequency. Cardiac output is a function of the heart beat frequency and the stroke volume. The Frank-Starling mechanism allows coupling of the venous return with the stroke volume. Within each capillary bed there is a net loss of liquid to the extracellular space; this imbalance depends on the hydrostatic pressure and the colloid osmotic pressure gradients.

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v. Test your knowledge of the flow of blood through the heart by placing the following cardiac events in the proper order. The first step has been provided to get you started. Arrange the subsequent events by inserting the numbers 2 through 18 in the spaces provided. 1. Deoxygenated blood flows through the superior and inferior vena cava and into the right atrium. _A. Blood fills the left atrium. _B. The right atrium contracts. _C. The pulmonary valve closes. D. Blood leaves the lungs via the pulmonary veins. E. The left atrium contracts. _F. The pulmonary valve opens. _G. Blood flows into the aorta for distribution throughout the body. _H. The mitral valve closes. 1. The left ventricle contracts. J. The aortic valve opens. _K. The right ventricle contracts. _L. The tricuspid valve opens. M. Rlood is pumped into the right and left pulmonary arteries and into the lungs. _N. Blood fills the left ventricle. _0. The mitral valve opens. _P. Blood flows into the right ventricle. _Q. The…

v. Test your knowledge of the flow of blood through the heart by placing the following cardiac events in the proper order. The first step has been provided to get you started. Arrange the subsequent events by inserting the numbers 2 through 18 in the spaces provided. 1. Deoxygenated blood flows through the superior and inferior vena cava and into the right atrium. A. Blood fills the left atrium. _B. The right atrium contracts. _C. The pulmonary valve closes. D. Blood leaves the lungs via the pulmonary veins. E. The left atrium contracts. _F. The pulmonary valve opens. G. Blood flows into the aorta for distribution throughout the body. _H. The mitral valve closes. _I. The left ventricle contracts. J. The aortic valve opens. _K. The right ventricle contracts. L. The tricuspid valve opens. M. Blood is pumped into the right and left pulmonary arteries and into the lungs. N. Blood fills the left ventricle. O. The mitral valve opens. P. Blood flows into the right ventricle. Q. The tricuspid…

After being rescued from the pool by the lifeguards, Marco now makes his way to the powerlifting competition, where he must deadlift (lift off the floor) 500kg. Consider how the following parameters would change during this bout of static exercise. Assume Marco can't actually lift the weight, but is trying really hard to do so. Cardiac output MAP AV conduction time [Choose ] [Choose ] [Choose ]

ASAP!  Conduction of a neural signal through the walls of the ventricles of the heart is accomplished along:   A. Interatrial Fibers B. The sinoatrial node C. The AV bundle D. The purkinje fibers

2.A. 1. 2. 3. 4. |||| ential (mv) 13. State the channels involved in an action potential in cardiac AUTORHYTHMIC cells, which ion moves across the channel, which direction each ion moves across the channel when the channel opens, the approximate membrane potential at which the channel is fully open. +20 !!| CE - | Channel AaBbCcDdEe AaBbCcD. AaBBCEDE Aal Emphasis Heading 1 Normal lon? Influx or Efflux? 14. Define the term pacemaker potential (=drifting potential) and be able to identify it when given a graph of an action potential in an autorhythmic cell such as the one below. I Membrane Potential at which channel opens or is fully open (mv)

O Question 55 In the heart, lub - dub refer to, in order, the O closing of all valves simultaneously O closing of the AV valves and closing of the semilunar valves opening of the semilunar valves and opening of the AV valves O closing of the AV valves and opening of the semilunar valves um #3 Lecture S..pdf Den file

We measured the stroke volume of the left ventricle. What was the average stroke volume of the right ventricle at rest and after exercise? 2. Assume that for one beat, the stroke volume of the left ventricle is greater than that of the right ventricle. Explain why in a normal heart this would be corrected on the next beat. 3. Explain why elite athletes have a lower than normal heart rate, yet have a higher than normal ability to increase cardiac output.

pls explain! please and thank you!

Exercise-induced stress increases cardiac output and vasoconstriction, so why does the amplitude of the pulse change the way it does (compare this to what happens during the dive response)?

Chapter 15: Lab Assignment: Heart Rate and Aerobic Prescription (2 pages) 1. Resting Heart Rate (RHR): record your resting heart rate by taking your pulse for 10 seconds and multiplying the number by 6. What is a normal resting heart rate_ ×6= (RHR). , and how does yours compare? 2. Maximum Heart Rate (MHR)-what is a Maximum Heart Rate? Calculate your maximum heart rate by subtracting your age in years from 220. 220- (age) = (MHR) 3. Calculating a Heart Rate Range: Using the Karvonen formula, calculate a range of 70% to 75% of your maximum heart rate. Target Heart Rate = [(max HR - resting HR) x %Intensity] + resting HR example (Max HR) - (Max HR)- (RHR) x 0.70+ (RHR) x 0.75 + (RHR) = (RHR) = Why should we figure out our Target Heart Rate? What is the benefit of using the Karvonen formula? 4. Utilize the Fartlek Aerobic Training/Speed Play Method for 10 minutes. 1 minute (run/jog/speed walk)-1 minute (jog, walk). Take your heart rate immediately upon completion for 1 minute.. Are you…

States) Show your workl 1. Juan has a cardiac output (CO) of 6000 mL per minute at rest. He has a resting heart rate (HR) of 60 beats/min. What is his stroke volume? I 2. Ejection fraction is the percentage of blood pumped out of the ventricles (EDV) with each heartbeat (see formula below). If Juan's EDV is 150 mL, what is his ejection fraction? Ejection Fraction = Stroke volume End diastolic volume X 100 3. Juan went for a walk and his heart rate climbed to 110 beats/min. his EDV decreased to 125 mL and his ejection fraction was 80%. What was his cardiac output? E Focus

sluis 1. Arteries that supply blood to cardiac muscle 2. Layer of heart wall containing cardiac muscle 3. Extensions of the atria alsoq ard 4. Heart is located here (area between the lungs)