EP HUMAN BIOLOGY-MODIFIED MASTERING
8th Edition
ISBN: 9780134326436
Author: Johnson
Publisher: PEARSON CO
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Textbook Question
Chapter 8, Problem 7CR
Describe the function of the SA and AV nodes as they control contraction of the heart.
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Describe the function of the SA and AV nodes as they control contraction of the heart.
You have a young woman on your ward who is awaiting heart surgery. She is keen to know about the structure and function of the heart and asks you to explain the flow of blood through the heart from start to finish. She wants to hear anatomical names and learn about physiological processes ejecting blood from her heart, your response will help keep her distracted from thinking about her upcoming operation.
a. Describe the flow of blood through the heart, naming each of the vessels bringing and taking blood to and from the heart. Include chambers of the heart and name structures in the correct sequence along the blood's pathway through the heart - begin with blood returning to the heart from the body and end with blood being ejected into the systemic circulation. Include the names of the valves and identify which valves are open and closed during each cardiac cycle. Describe, using terms like diastole and systole, the changes in ventricular pressure during one cardiac cycle and…
Describe intrinsic regulation of the heart.
Chapter 8 Solutions
EP HUMAN BIOLOGY-MODIFIED MASTERING
Ch. 8 -
1. Who do you want to help you decide which...Ch. 8 - Do you think cost-effectiveness should be a part...Ch. 8 -
1. Why is it so important that the heart always...Ch. 8 - Compare and contrast the structures and functions...Ch. 8 - Prob. 3CRCh. 8 - Describe the function of the heart valves.Ch. 8 - Compare the functions of the pulmonary circuit and...Ch. 8 -
6. Describe the cardiac cycle of relaxation and...Ch. 8 - Describe the function of the SA and AV nodes as...Ch. 8 - Prob. 8CR
Ch. 8 - Prob. 9CRCh. 8 - Prob. 10CRCh. 8 -
1. _______ carry blood away from the heart and...Ch. 8 - Prob. 2TYCh. 8 - Which of the choices represents the order of...Ch. 8 - Prob. 4TYCh. 8 - Prob. 5TYCh. 8 - Prob. 6TYCh. 8 - Prob. 7TYCh. 8 - A pacemaker is used to correct: a. coronary artery...Ch. 8 - Prob. 9TYCh. 8 - Prob. 10TYCh. 8 - Prob. 11TYCh. 8 - Prob. 12TYCh. 8 - Prob. 13TYCh. 8 - Prob. 14TYCh. 8 - Prob. 15TYCh. 8 - Prob. 1AWKCh. 8 - When a coronary artery bypass graft (CABG) is...Ch. 8 - Soldiers have to stand in formation at full...Ch. 8 - Prob. 4AWKCh. 8 - Prob. 5AWKCh. 8 - Ventricular fibrillation is a potentially fatal...Ch. 8 - Prob. 7AWKCh. 8 - Last night, you and your roommate were sound...
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- Describe the cardiac cycle.arrow_forwardContraction of _______ drives the flow of blood through the aorta and pulmonary arteries. a. atria b. veins c. arterioles d. Ventriclesarrow_forwardState the main functions of venules and veins. What forces work together in returning venous blood to the heart?arrow_forward
- Explain how the structure of the heart relates to its functionarrow_forwardDescribe how the major pumping chambers, the ventricles, form within the developing heart.arrow_forwardDescribe in detail the effect of the automatic nervous system on the cardiac system. Include all associated structuresarrow_forward
- During a lethal heart attack, a blood clot lodges in the first part of the circumflex branch of the left coronary artery, blocking blood flow through this vessel. What regions of the heart will become ischemic and die?arrow_forwardDescribe the pathway of action potentials through the cardiac conduction system and explain its association with contractions of the atria and ventriclesarrow_forwardDescribe the cardiac center and innervation of the heart.arrow_forward
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