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 2PL
The ________ of the conduction system is/are located throughout the ventricular walls.
a. AV node
b. left bundle branch
c. right bundle branch
d. Purkinje fibers
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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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- Blood is supplied to the left side of the head and neck by the ______ artery. A. Left Subclavian B. Brachiocephalic C. Left Common Carotid D. Right Common Carotidarrow_forwardAnytime there is a sustained change in blood pressure (longer than 2-5 minutes) ______ is responsible for sensing this change and restoring normal blood pressure. a. Carotid sinus baroreceptors b. Both the aortic arch and carotid sinus baroreceptors c. Renal baroreceptors d. Aortic arch baroreceptorsarrow_forwardCoronary artery disease can diminish myocardial blood flow resulting in the death of myocardial cells. This condition is known as a myocardial_________. Select one: a. angina b. necrosis c. infarction d. attack e. cirrhosisarrow_forward
- The term ______ is synonymous with the Bundle of His. A. Atrioventricular bundle B. Sinoatrial bundle C. Sinoatrial node D. Interventricular bundle A good example of a superficial vein in the upper extremity is the: A. Brachial B. Axillary C. Median cubital D. Brachial femorisarrow_forwardA(n) ___________ is a type of vessel with the smallest pressure gradient that must be overcome by contraction of skeletal muscles and breathing. a. artery b. vein c. capillary d. sinusoidarrow_forwardThe ____________ follows the coronary sulcus around the heart and supplies blood to the left atrium and ventricle. a. left coronary artery b. right coronary artery c. circumflex artery d. anterior interventricular arteryarrow_forward
- In electrocardiography (=EKG, =ECG), what causes a P wave?______ A. atrial repolarization B. ventricular repolarization C. atrial depolarization D. ventricular depolarizationarrow_forwardA patient who has a history of coronary artery disease (CAD) is admitted with acute coronary syndrome (ACS). The EKG shows ST-segment depression. The nurse knows that this most likely indicates? a. Myocardial injury b. Myocardial infarction c. Pacemaker is present d. Myocardial ischemiaarrow_forwardBlood flows directly from the left atrium to_____ . a. the aorta c. the right atrium b. the left ventricle d. the pulmonary arteriesarrow_forward
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