Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 44.3, Problem 4SB
Describe the electrical events that occur during the cardiac cyclein a mammalian heart.
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Chapter 44 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 44.1 - What are the three basic features of animal...Ch. 44.1 - Prob. 2SBCh. 44.1 - Prob. 3SBCh. 44.1 - Prob. 4SBCh. 44.2 - Outline the life cycle of an erythrocyte.Ch. 44.2 - Prob. 2SBCh. 44.2 - Prob. 3SBCh. 44.3 - Prob. 1SBCh. 44.3 - Prob. 2SBCh. 44.3 - How do neurogenic and myogenic hearts differ?
Ch. 44.3 - Describe the electrical events that occur during...Ch. 44.4 - Prob. 1SBCh. 44.4 - Prob. 2SBCh. 44.4 - Prob. 3SBCh. 44.5 - Prob. 1SBCh. 44.5 - Prob. 2SBCh. 44.5 - Prob. 3SBCh. 44.6 - Prob. 1SBCh. 44 - Prob. 1TYKCh. 44 - Prob. 2TYKCh. 44 - Prob. 3TYKCh. 44 - A characteristic of blood circulation through or...Ch. 44 - The heartbeat includes: a. the systole when the...Ch. 44 - Keeping the mammalian cardiac cycle balanced...Ch. 44 - Prob. 7TYKCh. 44 - Characteristics of veins and venules are: a. thick...Ch. 44 - Prob. 9TYKCh. 44 - Prob. 10TYKCh. 44 - Prob. 11TYKCh. 44 - Prob. 12TYKCh. 44 - Prob. 13TYKCh. 44 - Prob. 15TYKCh. 44 - Nifedipine is an antihypertension medication that...Ch. 44 - Prob. 2ITDCh. 44 - Nifedipine is an antihypertension medication that...
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- Why does the mammalian heart have 2 pumping chambers? What is the purpose?arrow_forwardDescribe two mechanisms by which the cardiac output of an animal’s heart can be adjusted and indicate which is more important for increasing cardiac output in mammals and which is more important in fish.arrow_forwardDescribe all the events (steps) that occur during a cardiac cycle for mammals (organisms with a double circulation). How does this cycle contribute to metabolic homeostasis for our cells, and what is the purpose of the valves?arrow_forward
- Explain, using diagrams where appropriate, the sequence of events in a cardiac cyclearrow_forwardexplain the cardiac cycle and how electrical impulses are conducted through the human heart?arrow_forwardlist in sequence the components of the elctrical conducting system of the human heartarrow_forward
- Describe how the four chambers of the fish heart function and the principal limitation of this design.arrow_forwardExplain how the conduction pathway in the heart co-ordinates the different stages of the cardiac cyclearrow_forwardTrace and describe the formation of postnatal heart structuresfrom the primitive heart tubearrow_forward
- Describe all the events (steps) that occur during a cardiac cycle for mammals (organisms with a double circulation). Please include in your description all the steps illustrated in slide #16 of the Cardiovascular System PowerPoint presentation (Lectures 5&6), as well as the opening and closing of all heart valves (refer to slide #21), and the signals arising from the SA and AV nodes (shown in slide #25). How does this cycle contribute to metabolic homeostasis for our cells, and what is the purpose of the valves?arrow_forwardDescribe the effect of an increased calcium ion (Ca++) concentration on the frog’s heart rate.arrow_forwardWhy does heart rate and contraction force change relative to resting values when the frog's heart was cooled?arrow_forward
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The Cardiovascular System: An Overview; Author: Strong Medicine;https://www.youtube.com/watch?v=Wu18mpI_62s;License: Standard youtube license