Laboratory Manual For Human Anatomy & Physiology
4th Edition
ISBN: 9781260159363
Author: Martin, Terry R., Prentice-craver, Cynthia
Publisher: McGraw-Hill Publishing Co.
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Textbook Question
Chapter 45, Problem 1.4A
During ventricular relaxation, the AV valves are ______.
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One complete heart beat goes from _______.
Chapter 45 Solutions
Laboratory Manual For Human Anatomy & Physiology
Ch. 45 - The _______ of the conduction system is known as...Ch. 45 - The ________ of the conduction system is/are...Ch. 45 - The first of two heart sounds (lubb) occurs when...Ch. 45 - One cardiac cycle would consist of a. left chamber...Ch. 45 - The SA node of the heart is located in the a....Ch. 45 - The depolarization of ventricular fibers is...Ch. 45 - The dupp sound occurs when the semilunar valves...Ch. 45 - The P wave of an ECG occurs during the...Ch. 45 - The period during a heart is contracting is called...Ch. 45 - The period during which a heart chamber is...
Ch. 45 - During ventricular contraction, the AV valves...Ch. 45 - During ventricular relaxation, the AV valves are...Ch. 45 - The pulmonary and aortic valves open when the...Ch. 45 - The first sound of a cardiac cycle occurs when the...Ch. 45 - The second sound of a cardiac cycle occurs when...Ch. 45 - The sound created when blood leaks back through an...Ch. 45 - What changes did you note in the heart sounds when...Ch. 45 - What changes did you note in the heart sounds...Ch. 45 - Prob. 3.1ACh. 45 - The ____________________ node is located in the...Ch. 45 - The fibers that carry cardiac impulses from the...Ch. 45 - Prob. 3.4ACh. 45 - The P wave corresponds to depolarization of the...Ch. 45 - The QRS complex corresponds to depolarization of...Ch. 45 - The T wave corresponds to repolarization of the...Ch. 45 - Why is atrial repolarization not observed in the...Ch. 45 - Identify the heart chambers and conduction system...Ch. 45 - How much time passed from the beginning of the P...Ch. 45 - What is the significance of this P-R interval?Ch. 45 - How can you determine heart rate from an...Ch. 45 - As blood in the ventricles surges back against the...
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- The term _________________ ECG means a record or picture of the electrical activity of the heart electr/o means electric, and cardi/o means heart.arrow_forwardTrabeculae ___ are visible on the inner surface of the ventriclesarrow_forwardRepolarization 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 enteringarrow_forward
- 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 blockarrow_forwardperkinje fibers located in endocardium myocardium pericardium serosa non of abovearrow_forwardncreasing preload __________ ventricular contractility. decreases has no effect on increasesarrow_forward
- The first heart sound is heard as the ECG records the end of the ______. A P wave B T-P interval C QRS wave D T wave E S-T segmentarrow_forwardThe location in the heart indicated by letter ___ is the last one to get activatedarrow_forwardThe ___ valves are positioned between the atria and the ventricles.arrow_forward
- The origin of the coronary arteries are labelled ___ in this image. D A E Karrow_forwardUpward deflection due to atrial depolarization = P wave PR interval QRS complex T wavearrow_forwardThe type(s) of vessels which could develop an aneurysm is (are) ___. arteries only veins only veins and arteries veins and capillariesarrow_forward
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