SEELEY'S ANATOMY+PHYSIOLOGY
12th Edition
ISBN: 9781260172195
Author: VanPutte
Publisher: RENT MCG
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Question
Chapter 20.6, Problem 23AYP
Summary Introduction
To analyze:
The change in the ion concentration during different phases of heart contraction.
Introduction:
The cardiovascular system is made of different components. The heart constitutes the primary organs of the system, and the arteries, veins, and blood capillaries form the associated structures of the cardiovascular system. Among the blood vessels, the pulmonary artery, vein, and aorta form the largest and most important vessel system.
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Chapter 20 Solutions
SEELEY'S ANATOMY+PHYSIOLOGY
Ch. 20.1 - State the four functions of the heart.Ch. 20.2 - What is the approximate size and shape of the...Ch. 20.2 - Where is the heart located? How does this...Ch. 20.3 - Describe the parts of the pericardium and their...Ch. 20.3 - Describe the three layers of the heart wall, and...Ch. 20.3 - Name the chambers of the heart, and describe their...Ch. 20.3 - List the major blood vessels that enter and leave...Ch. 20.3 - Prob. 8AYPCh. 20.3 - Prob. 9AYPCh. 20.3 - Prob. 10AYP
Ch. 20.3 - Describe the openings of the right and left atria....Ch. 20.3 - Prob. 12AYPCh. 20.3 - Prob. 13AYPCh. 20.3 - Prob. 14AYPCh. 20.4 - Prob. 15AYPCh. 20.5 - Prob. 16AYPCh. 20.5 - Prob. 17AYPCh. 20.5 - Prob. 18AYPCh. 20.5 - Prob. 19AYPCh. 20.5 - Identify the parts of the conducting system of...Ch. 20.5 - Prob. 21AYPCh. 20.5 - Prob. 22AYPCh. 20.6 - Prob. 23AYPCh. 20.6 - Prob. 24AYPCh. 20.6 - Prob. 25AYPCh. 20.6 - Prob. 26AYPCh. 20.6 - What does an ECG measure? Nome the waves...Ch. 20.7 - Define systole and diastole.Ch. 20.7 - List the five periods of the cardiac cycle (see...Ch. 20.7 - Define isovolumetric. When does most ventricular...Ch. 20.7 - Prob. 31AYPCh. 20.7 - Prob. 32AYPCh. 20.7 - Prob. 33AYPCh. 20.8 - Prob. 34AYPCh. 20.8 - Explain the role of MAP in causing blood flow.Ch. 20.8 - Prob. 36AYPCh. 20.8 - Prob. 37AYPCh. 20.8 - Prob. 38AYPCh. 20.9 - Prob. 39AYPCh. 20.9 - Prob. 40AYPCh. 20.9 - Prob. 41AYPCh. 20.9 - Prob. 42AYPCh. 20.9 - Prob. 43AYPCh. 20.10 - Prob. 44AYPCh. 20.10 - Prob. 45AYPCh. 20.10 - What effect does an increase or a decrease...Ch. 20.10 - Prob. 47AYPCh. 20.11 - Prob. 48AYPCh. 20.11 - Prob. 49AYPCh. 20.11 - Prob. 50AYPCh. 20.11 - Prob. 51AYPCh. 20 - Which of these structures returns blood to the...Ch. 20 - Prob. 2RACCh. 20 - Prob. 3RACCh. 20 - Prob. 4RACCh. 20 - Prob. 5RACCh. 20 - Prob. 6RACCh. 20 - Action potentials pass from one cardiac muscle...Ch. 20 - During the transmission of action potentials...Ch. 20 - Given these structures of the conducting system of...Ch. 20 - Prob. 10RACCh. 20 - Prob. 11RACCh. 20 - The greatest amount of ventricular filling occurs...Ch. 20 - Prob. 13RACCh. 20 - Prob. 14RACCh. 20 - Prob. 15RACCh. 20 - Cardiac output is defined as blood pressure times...Ch. 20 - Pressure in the aorta is at its lowest a. at the...Ch. 20 - Prob. 18RACCh. 20 - Prob. 19RACCh. 20 - Prob. 20RACCh. 20 - Prob. 21RACCh. 20 - Increased parasympathetic stimulation of the heart...Ch. 20 - Prob. 23RACCh. 20 - Prob. 24RACCh. 20 - Prob. 25RACCh. 20 - Prob. 1CTCh. 20 - In most tissues, peak blood flow occurs during...Ch. 20 - Prob. 3CTCh. 20 - Prob. 4CTCh. 20 - A patient has tachycardia. Would you recommended a...Ch. 20 - Prob. 6CTCh. 20 - A doctor lets you listen to a patient's heart with...Ch. 20 - Explain why it is sufficient to replace the...Ch. 20 - Prob. 9CTCh. 20 - Prob. 10CTCh. 20 - Prob. 11CT
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- Calculate the driving force for Na+, K+, and Ca2+ current in a neuron under physiological conditions.arrow_forwardIn your study of neuron physiology, you learned that depolarization is dependent on the sodium entry (influx), and repolarization contingent on the potassium exit (efflux.) Compare the action potential in the heart’s intrinsic conduction and contractile cells, then explain why the electrocardiogram has different parts (P, QRS complex, and T wave.)?arrow_forwardDuring the refractory period a second action potential______. A cannot occur because voltage-gated Na+ channels are inactivated B cannot occur because the heart muscle cell has already returned to resting potential C can be initiated more easily because the threshold potential is reduced D can be initiated more easily because the calcium level in the sarcoplasm is increasedarrow_forward
- Below are drawings of three different action potentials. Two of these occur in the heart, and one occurs in skeletal muscle. Which one comes from a contractile cardiac muscle cell? A skeletal muscle cell? A cardiac pacemaker cell? For each one, state which ion is responsible for the depolarization phase and which ion is responsible for the repolarization phase.arrow_forwardDraw a ventricular muscle cell action potential in the figure below.Briefly describe the changes in membrane permeability that underlie the potential changes.arrow_forwardThe entry of calcium into a ventricular muscle cell helps to maintain depolarization of the membrane during the plateau phase of the action potential, but this calcium also performs what other function?arrow_forward
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