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 1.3A
During ventricular contraction, the AV valves (tricuspid and mitral valves) are __________.
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During ventricular relaxation, the A-V valves remain _______________________.
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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- During exercise, the regulation of blood flow to the skeletal muscle occurs at the____________. Group of answer choices Aorta Vena Cava arterioles venuolesarrow_forwardSignificant ST-segment elevation represents potential myocardialarrow_forwardSignificant ST-segment depression represents potential myocardialarrow_forward
- Fill in the blank: A pulse that feels full and is not easily compressed is produced by an elevated _______________________.arrow_forwardThe left ____________________________ can often be seen superior to the aortic arch as it courses horizontally towards the _____.arrow_forwardThe great cardiac vein and anterior interventricular artery can be found along the anterior _____________ sulcus.arrow_forward
- Fill in the blank: The period during which a heart chamber is contracting is called _______________________.arrow_forwardA stenotic valve __________________. Group of answer choices 1) has an opening that is narrowed, allowing less blood to move through the valve. 2)between the atrium and ventricle in the L heart, would back up blood in the ventricle. 3)can only occur in the bicuspid valve 4)never occurs in a young (under 65 years) individualarrow_forwardOne of the most common heart conditions in the United States is valvular disease. Diseased valves are often described as “leaky” because they allow blood to regurgitate or flow backward. The most commonly impacted valve is the aortic semilunar valve. Explain why a “leaky” aortic semilunar valve would be detrimental to patients. _________________________________________________________________________________________________________________arrow_forward
- Fill in the blank: The sound created when blood leaks back through an incompletely closed valve is called a_______________________.arrow_forwardFill in the blank: The QRS complex corresponds to depolarization of the muscle fibers of the _______________________.arrow_forwardFill in the blank: Baroreceptors (pressoreceptors) located in the walls of the aorta and carotid arteries are sensitive to changes in_______________________.arrow_forward
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