Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Question
Chapter 33, Problem 4RQ
Summary Introduction
To explain:
The structure of cardiac, muscles and also to determine how it produces coordinated contraction in each heart chamber.
Introduction:
Muscle cells are the fundamental units of the muscle that carry multiple nuclei. It also has properties of excitability, contractility, extensibility, and elasticity. During embryonic development, many cells fuse together and form a muscle cell.
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Explain the structure of cardiac muscle and how it helps produce coordinated contraction in each heart chamber.
Discuss in details the unique structure of a cardiac muscle fiber.
define Cardiac muscle,
Chapter 33 Solutions
Biology
Ch. 33.1 - Why doesnt insect hemolymph need hemoglobin?Ch. 33.1 - Prob. 1CYLCh. 33.1 - compare open and closed circulatory systems?Ch. 33.1 - describe the functions of the vertebrate...Ch. 33.2 - Prob. 1CSCCh. 33.2 - Prob. 1TCCh. 33.2 - Prob. 1HYEWCh. 33.2 - describe the three types of vertebrate hearts and...Ch. 33.2 - Prob. 2CYLCh. 33.2 - Prob. 3CYL
Ch. 33.3 - Prob. 1TCCh. 33.3 - Prob. 2TCCh. 33.3 - describe each component of blood and explain its...Ch. 33.3 - Prob. 2CYLCh. 33.3 - explain the sequence of events during blood...Ch. 33.4 - Prob. 1TCCh. 33.4 - Prob. 2TCCh. 33.4 - Prob. 1CYLCh. 33.4 - Prob. 2CYLCh. 33.4 - Prob. 3CYLCh. 33.5 - Prob. 1TCCh. 33.5 - Prob. 1CSCCh. 33.5 - Prob. 1CYLCh. 33.5 - Prob. 2CYLCh. 33.5 - Prob. 3CYLCh. 33 - Prob. 1MCCh. 33 - Which of the following is True? a. Arteriole...Ch. 33 - Prob. 3MCCh. 33 - Prob. 4MCCh. 33 - Which of the following is true of blood pressure?...Ch. 33 - Prob. 1FIBCh. 33 - Prob. 2FIBCh. 33 - The hearts pacemaker is called the (complete term)...Ch. 33 - Prob. 4FIBCh. 33 - Prob. 5FIBCh. 33 - Prob. 6FIBCh. 33 - Lymph is ___________ that has entered lymphatic...Ch. 33 - List the major structures of all circulatory...Ch. 33 - Describe and compare the features of open and...Ch. 33 - Explain how two- and three-chambered vertebrate...Ch. 33 - Prob. 4RQCh. 33 - Prob. 5RQCh. 33 - Prob. 6RQCh. 33 - Prob. 7RQCh. 33 - Prob. 8RQCh. 33 - Describe the cardiac cycle, and relate the...Ch. 33 - Prob. 10RQCh. 33 - Prob. 11RQCh. 33 - Prob. 12RQCh. 33 - In what way do veins and lymphatic vessels...Ch. 33 - Prob. 1ACCh. 33 - Prob. 2AC
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- _____ contraction drives blood through the systemic and pulmonary circuits; outside the heart, blood pressure is highest in the _____. a. Atrial; ventricles b. Atrial; atria c. Ventricular; arteries d. Ventricular; aortaarrow_forwardDescribe the properties of the cardiac muscle, including automaticity, excitability, conductivity, and contractility.arrow_forwardName the characteristics of cardiac muscle tissue and cells.arrow_forward
- Differentiate the action potential of the types of the cardiac musclearrow_forwardWhat are three anatomic or physiologic differences between skeletal muscle and cardiac muscle?arrow_forwardDescribe the histology of cardiac muscle tissue, and differentiate ?it from that of skeletal muscle?arrow_forward
- How does digitalis result in an increased contractile force of cardiac muscle?arrow_forwardExplains the significance of long refactory period in cardiac muscle and the importance of anastomotic channels in heart musclearrow_forwardCompare the action potentials of contractile cardiac muscle. autorhythmic cardiac muscle and skeletal muscle.arrow_forward
- Describe the structural and functional characteristics of cardiac muscle tissue and the cardiac conduction system.arrow_forwardThe plasma membranes of adjacent cardiac muscle cells are connected via ____________, in which ____________ tie the cells together and ____________allow current (ions) to flow from one cell to the next (electrical coupling).arrow_forwardStates the histological similarities and differences between the cross section of smooth and that of cardiac muscle.arrow_forward
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