Campbell Biology in Focus; Modified Mastering Biology with Pearson eText -- ValuePack Access Card -- for Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780134433776
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman
Publisher: PEARSON
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Chapter 34.3, Problem 3CC
Summary Introduction
To determine:
The advantages and disadvantages of having additional heart in human body.
Introduction:
Heart is muscular organ help in circulation of blood into whole body. It also helps in transportation of oxygen and nutrients to the body through blood and removes carbon dioxide and
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Scenario 2-One very unhealthy-looking human goes into atrial fibrillation while working out in
the Vegan gym. This is when the SA node is not generating coordinated electrical impulses. Instead,
impulses are flowing randomly over the atrial walls eventually making their way to the AV node. The
AV node then generates normal electrical impulses. The result of this appears to be normal ventricular
contraction, but the atria just wiggle around, and atrial contraction is not well coordinated.
Predicted effect on systolic and dastolic blood
Predicted effect on the EKG trace. Present both
a drawing of the trace and explain how/why it is
different from the normal trace.
pressure:
WHAT IF? If your doctor gave you a copy of your ECG recording, how could you determine what your heartrate had been during the test?
#11.
Chapter 34 Solutions
Campbell Biology in Focus; Modified Mastering Biology with Pearson eText -- ValuePack Access Card -- for Campbell Biology in Focus (2nd Edition)
Ch. 34.1 - How is the now of hemolymph through an open...Ch. 34.1 - Three-chambered hearts with incomplete septa were...Ch. 34.1 - Prob. 3CCCh. 34.2 - Prob. 1CCCh. 34.2 - Why is it important that the AV node delay the...Ch. 34.2 - Prob. 3CCCh. 34.3 - What is the primary cause of the low velocity of...Ch. 34.3 - Prob. 2CCCh. 34.3 - Prob. 3CCCh. 34.4 - Prob. 1CC
Ch. 34.4 - Prob. 2CCCh. 34.4 - Prob. 3CCCh. 34.4 - Prob. 4CCCh. 34.5 - Why is an internal location for gas exchange...Ch. 34.5 - After a heavy rain, earthworms come to the...Ch. 34.5 - MAKE CONNECTIONS Describe similarities in the...Ch. 34.6 - Prob. 1CCCh. 34.6 - Prob. 2CCCh. 34.6 - WHAT IF? If an injury tore a small hole in the...Ch. 34.7 - What determines whether O2, or CO2, undergoes net...Ch. 34.7 - How does the Bohr shift help deliver O2, to very...Ch. 34.7 - Prob. 3CCCh. 34 - Which of the following respiratory systems is not...Ch. 34 - Blood returning to the mammalian heart in a...Ch. 34 - Pulse is a direct measure of A. blood pressure. B....Ch. 34 - Prob. 4TYUCh. 34 - One feature that amphibians and humans have in...Ch. 34 - If a molecule of CO2 released into the blood in...Ch. 34 - Prob. 7TYUCh. 34 - DRAW IT Plot blood pressure against time for one...Ch. 34 - Prob. 9TYUCh. 34 - Prob. 10TYUCh. 34 - Prob. 11TYUCh. 34 - SYNTHESIZE YOUR KNOWLEDGE The diving bell spider...
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- QUESTION 3 What would happen if the AV node failed to delay transmission of signals from the SA node? The atria and ventricles would contract at the same time The ventricles would start squeezing from the top to the bottom The AV node and the SA node would be unable to communicate Neuronal regulation of heart rate would be impaired None of the above are correctarrow_forwardRestate your predictions that were not correct and correct them, give supporting data from your experiment that supports your corrections.arrow_forwardQUESTION 2 What would happen if the electrical signals radiated out from the AV node rather than being routed to the apex of the heart? The atria and ventricles would contract at the same time The ventricles would start squeezing from the top to the bottom The AV node and the SA node would be unable to communicate Neuronal regulation of heart rate would be impaired None of the above are correctarrow_forward
- 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…arrow_forwardCreate a flow diagram for this cardiovascular system that has these elements in correct order • Vena cava, heart, aorta, left ventricle, right ventricle, right atrium, left atrium, lungs JUN 21 tv speaker notes Q E 4 R E % 5 T MacBook Pro CO 6 Y & 7 U * CO 8 8 ( 9 O 0 I P Iarrow_forward* ? Which one is true For few seconds the blood supplies CO2 to cells and picks up 02. For few mints the blood supplies 02 to cells and picks up CO2. For few seconds the blood supplies 02 to cells and picks up CO2. The blood is pumped by contraction of the heart muscle None From left ventricle at pressure of 125 mmHg and finally into very fine meshwork. From right ventricle at pressure of 125 mmHg and finally into very fine meshwork.arrow_forward
- WHAT IF? Suppose that after you exercise regularly forseveral months, your resting heart rate decreases, butyour cardiac output at rest is unchanged. Based on theseobservations, what other change in the function of yourheart at rest likely occurred?arrow_forward4.4. 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.arrow_forwardHelp ?arrow_forward
- down DATA ANALYSIS 1. Typical resting heart rates range from 55-100 beats per minute. What was the subject's resting heart rate? How much did the subject's heart rate increase above resting rate with exercise? What percent increase was this? Explain. alt 2. How does the subject's maximum heart rate compare with other students in the group or class? Is this what you expected? Explain. Explain- 3. Recovery time has been shown to correlate with degree of physical fitness. How does the subject's recovery rate compare to that of your classmates? Is this what you expected? page 94 4. Congestive heart failure is a condition in which the strength of contraction with each beat may be significantly reduced. For example, the ventricle may pump only half the usual volume of blood with each beat. Would you expect a person with congestive heart failure to have a faster or slower heart rate at rest? With exercise? 5. Certain medications are prescribed by medical professionals to slow a patient's…arrow_forwardCanvas ← X Ⓡ Question 22 The corresponding mechanical events of P wave and the QRS complex are oo O Depolarization of the ventricles; repolarization of the atria O O O Depolarization of the ventricles; polarization of the SA Node contraction of the atria; contraction of the ventricle Contraction of the AV node; relaxation of the SA node Repolarization of the ventricles; polarization of the atria and ventricles and respectively?arrow_forward#9arrow_forward
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