Campbell Biology In Focus
2nd Edition
ISBN: 9780134203072
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
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:
1 point
Which of the following best describes diastole?
The atria contract which force the atrioventricular valves to close
The ventricles contract forcing blood to leave the heart and the atrioventricular valves
close
The ventricles relax and re-fill with blood and the atrioventricular valves open
Both atria and ventricles contract at the same time and all valves are open
What is NOT the function of hemoglobin in red blood cells?
O Delivers CO2 from the body cells
Binds and delivers 02 to body cells
Involved in blood clotting
Involved in fighting off bacteria and viruses
The system of blood vessels that carry blood between the lungs and the
heart is called the:
Systemic circuit
Circulatory circuit
Pulmonary circuit
vascular circuit
Why does blood turn dark red as it circulates through the body?
It starts to clot.
It gets old and dirty flowing through the body.
The oxygen in the blood is replaced with carbon dioxide.
The farther blood is from the heart, the darker red it is.
ΟΟ
1 point…
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?
Chapter 34 Solutions
Campbell Biology In Focus
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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- Is it necessary to monitor our heart rate? Why or why not? Explain your Answerarrow_forwardQUESTION 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_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
- is it necessary to monitor our heart rate? Why or why not?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_forwardChapter 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_forward
- What do you mean by Synthetic heart valves ?arrow_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_forwardWHAT 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_forward
- 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.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%24 # 3 QUESTION 17 Blood enters the left side of the heart through: O pulmonary arteries O systemic arteries O pulmonary veins O systemic veins Click Save and Submit to save and submit. Click Save All Answers to save all an. 08 F3 esc 000 000 F4 F2 i 4.arrow_forward
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