HUMAN ANATOMY
6th Edition
ISBN: 9781260986037
Author: SALADIN
Publisher: MCG
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 20, Problem 8TYR
Summary Introduction
Introduction:
The valves in the heart help to pump blood effectively by ensuring that the blood has a one-way flow. There is a valve between each atrium and the corresponding ventricle and another at the exit from each ventricle into its great artery.
The AV valve regulates the openings between the atria and ventricles.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Repolarization of ventricular myocardiocytes is caused by ______ the cells through voltage-gated channels.
A
potassium entering
B
potassium leaving
C
sodium entering
D
sodium leaving
E
calcium entering
Pressure in the ventricle would be lowest during _____.
atrial systole
ventricular systole
ventricular diastole
isovolumetric relaxation
diastisis
When the ventricles are no longer acting as a syncytium and can't pump blood, they are in ____.
Group of answer choices
ventricular tachycardia
fibrillation
bradycardia
AV node block
Chapter 20 Solutions
HUMAN ANATOMY
Ch. 20.1 - Answer the following questions to test you...Ch. 20.2 - Parts of the fibrous skeleton sometimes become...Ch. 20.2 - Prob. 3BYGOCh. 20.2 - Prob. 4BYGOCh. 20.2 - Answer the following questions to test you...Ch. 20.3 - Answer the following questions to test you...Ch. 20.3 - Prob. 7BYGOCh. 20.3 - Prob. 8BYGOCh. 20.3 - Answer the following questions to test you...Ch. 20.4 - Why should mitochondria be large and more abundant...
Ch. 20.4 - Answer the following questions to test you...Ch. 20.4 - Answer the following questions to test you...Ch. 20.4 - Prob. 12BYGOCh. 20.4 - Prob. 13BYGOCh. 20.4 - Prob. 14BYGOCh. 20.5 - Answer the following questions to test you...Ch. 20.5 - Answer the following questions to test you...Ch. 20.5 - Prob. 17BYGOCh. 20.5 - Answer the following questions to test you...Ch. 20 - Prob. 20.1.1AYLOCh. 20 - Prob. 20.1.2AYLOCh. 20 - Prob. 20.1.3AYLOCh. 20 - To test your knowledge, discuss the following...Ch. 20 - To test your knowledge, discuss the following...Ch. 20 - Prob. 20.1.6AYLOCh. 20 - Prob. 20.2.1AYLOCh. 20 - Prob. 20.2.2AYLOCh. 20 - Prob. 20.2.3AYLOCh. 20 - Reasons for the differences in muscularity between...Ch. 20 - Prob. 20.2.5AYLOCh. 20 - Prob. 20.2.6AYLOCh. 20 - The names, locations, and anatomy of the two...Ch. 20 - Prob. 20.2.8AYLOCh. 20 - Prob. 20.2.9AYLOCh. 20 - Prob. 20.2.10AYLOCh. 20 - Prob. 20.3.1AYLOCh. 20 - Prob. 20.3.2AYLOCh. 20 - Prob. 20.3.3AYLOCh. 20 - Prob. 20.3.4AYLOCh. 20 - Prob. 20.4.1AYLOCh. 20 - Prob. 20.4.2AYLOCh. 20 - Prob. 20.4.3AYLOCh. 20 - The Coronary Conduction System and Cardiac...Ch. 20 - Prob. 20.4.5AYLOCh. 20 - Prob. 20.5.1AYLOCh. 20 - Prob. 20.5.2AYLOCh. 20 - Prob. 20.5.3AYLOCh. 20 - Prob. 20.5.4AYLOCh. 20 - Prob. 20.5.5AYLOCh. 20 - Prob. 1TYRCh. 20 - To get from the right atrium to the right...Ch. 20 - There is/are_________ pulmonary vein(s) emptying...Ch. 20 - Prob. 4TYRCh. 20 - Prob. 5TYRCh. 20 - These are some of the points that the blood passes...Ch. 20 - The ascending aorta and pulmonary trunk develop...Ch. 20 - Prob. 8TYRCh. 20 - Blood in the anterior interventricular branch of...Ch. 20 - Which of these is not characteristic of the heart...Ch. 20 - Prob. 11TYRCh. 20 - The circulatory route from aorta to the venae...Ch. 20 - The circumflex branch of the left coronary artery...Ch. 20 - The finest passages through which electical...Ch. 20 - Electrical signal pass quickly from one...Ch. 20 - The abnormal bulging of the left AV valve into the...Ch. 20 - Prob. 17TYRCh. 20 - Prob. 18TYRCh. 20 - Prob. 19TYRCh. 20 - Prob. 20TYRCh. 20 - Prob. 1BYMVCh. 20 - Prob. 2BYMVCh. 20 - Prob. 3BYMVCh. 20 - Prob. 4BYMVCh. 20 - Prob. 5BYMVCh. 20 - Prob. 6BYMVCh. 20 - Prob. 7BYMVCh. 20 - Prob. 8BYMVCh. 20 - Prob. 9BYMVCh. 20 - Prob. 10BYMVCh. 20 - Prob. 1WWWTSCh. 20 - Prob. 2WWWTSCh. 20 - Prob. 3WWWTSCh. 20 - Briefly explain why each of the following...Ch. 20 - Briefly explain why each of the following...Ch. 20 - Prob. 6WWWTSCh. 20 - Briefly explain why each of the following...Ch. 20 - Prob. 8WWWTSCh. 20 - Prob. 9WWWTSCh. 20 - Prob. 10WWWTSCh. 20 - Prob. 1TYCCh. 20 - Becky, age 2, was born with a hole in her...Ch. 20 - Prob. 3TYCCh. 20 - Prob. 4TYCCh. 20 - Prob. 5TYC
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Put in Order (rearrange these heart structures in the order through which electrical signals are conducted in a single cardiac cycle) atrial myocardium AV bundle branches AV bundle AV node subendocardial (Purkinje) fibers SA node ventricular myocardiumarrow_forwardNon-ST segment elevation myocardial infarction (NSTEMI) typically affects the:A pericardiumB sub-endocardiumC left or right atriumD right ventriclearrow_forwardBranches of the right coronary supply the right atrium and ventricle and variably parts of the pericardium and atrioventricular septum. True False d 2年4 EN ASUSarrow_forward
- The right coronary artery typically: supplies the pericardium has a circumflex branch supplies most of the interventricular septum O supplies both the AV and SA nodes passes to the left side of the pulmonary trunk after arising from the right aortic sinusarrow_forwardrganization of the peripheral ner Cusp of the mitral valve (cut to show aortic valve) Pulmonary trunk 8 Continue the cut into the left ventricle. Note the thickness of the left ventricle, as shown in Figure 12.8. How does it compare with the thickness of the right ventricle? Why is there a difference? Aorta Left auricle Cusp of the mitral valve Chordae tendineae Left ventricle wall Papillary muscle Opening to coronary artery Aortic valve Figure 12.8 Left ventricle of a sheep heart 9 Insert the scissors into the aorta. Extend the cut until you can see the aortic valve. Draw the aortic valve below. Is it structurally more similar to the pulmonary valve or the mitral valve? What is the function of this valve? 10 Draw the aortic valve structure below. h23 11 Your instructor may wish you to identify other structures on the heart. List any additional structures below 62 I BIO 142 Northern Virginia Community College Human Anatomy and Physiology lIarrow_forwardThe aortic semilunar valve has ____ pocket-like flaps of tissue.arrow_forward
- This ECG shows all these findings, except? II II V1 10 Old inferior myocardial infarction 2 O Multifocal atrial tachycardia 3 0 remature supraventricular beat with aberrancy (left bundle branch block pattern). Pacemaker rhythmarrow_forwardDetermine the missing word/phrase to correctly complete the explanation of conduction of the heart beat. Heart Conduction & the ECG The signal along nerves to the This node is located in the the right atrium. An electrical signal is sent and causes The signal is received by the the This signal causes corresponds to the the ECG. This node sends a signal to through the hormone P wave heart. This corresponds to the hormone node in the heart. AV bundle branches R wave S-T P-Q segment segment increased in the brain sends a ; this corresponds to of the ECG. purkinjie fibers node located in the right atrium. There is a slight delay before the next heartbeat as the dissipates from the of the septum and to in the walls of the The sympathetic nervous system causes an heart rate due to the of the ECG. The parasympathetic nervous system causes a heart rate due to the T wave and ofarrow_forwardwhen the loudest onset of the murmur is. If the patient has aortic stenosis? Pressure (mmHg) Volume (mL) Aortic 120 valve 100 opens 80 60- 40 20 0 130 90 Isovolumic contraction 50 A-V valve closes Isovolumic relaxation Ejection 1st Systole Rapid inflow Diastasis 2nd I Aortic valve doses A-V valve opens 3rd Atrial systole Diastole Systole Aortic pressure Atrial pressure Ventricular pressure Ventricular volume Electrocardiogram Phonocardiogramarrow_forward
- The patient's ECG indicates that _____. action potentials are passing from his atria into his ventricles before they are supposed to A his ventricles are not spending enough time in systole B the patient is suffering from a first degree cardiac block C the patient has atrial fibrillation D the patient is suffering from a second degree cardiac blockarrow_forwardLooking at the wiggers diagram. Notice, time stamp 370-410msec in the left ventricular volume the ventricles are in diastole, but there is no rise in the volume of blood, till the making “F”. Why is that?arrow_forwardWhat ECG is this? For example: is it a ventricular tachycardia or etc.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Comprehensive Medical Assisting: Administrative a...NursingISBN:9781305964792Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy CorreaPublisher:Cengage Learning
Basic Clinical Lab Competencies for Respiratory C...NursingISBN:9781285244662Author:WhitePublisher:Cengage
Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning- Understanding Health Insurance: A Guide to Billin...Health & NutritionISBN:9781337679480Author:GREENPublisher:Cengage
Comprehensive Medical Assisting: Administrative a...
Nursing
ISBN:9781305964792
Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy Correa
Publisher:Cengage Learning
Basic Clinical Lab Competencies for Respiratory C...
Nursing
ISBN:9781285244662
Author:White
Publisher:Cengage
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Understanding Health Insurance: A Guide to Billin...
Health & Nutrition
ISBN:9781337679480
Author:GREEN
Publisher:Cengage
TISSUE REPAIR Part 1: Repair - Regeneration; Author: ilovepathology;https://www.youtube.com/watch?v=t-5EjlS6qjk;License: Standard YouTube License, CC-BY