Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)
12th Edition
ISBN: 9780135755785
Author: Gerald Audesirk, Teresa Audesirk
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.
define Cardiac muscle,
Describe the properties of the cardiac muscle, including automaticity, excitability, conductivity, and contractility.
Chapter 33 Solutions
Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)
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_forwardExplain the role of tropomyosin in the muscle contraction process? How are the intercalated discs involved in the contraction of cardiac muscles?arrow_forwardName the characteristics of cardiac muscle tissue and cells.arrow_forward
- List the steps of a cardiac muscle cell CONTRACTION. Compare this to a skeletal muscle cell contraction.arrow_forwardExplain why it is important for cardiac muscle to havelonger-lasting contractions than skeletal muscle.arrow_forwardCompare excitation-contraction coupling and relaxation in cardiac and skeletal muscles.arrow_forward
- Describe the histology of cardiac muscle tissue, and differentiate ?it from that of skeletal muscle?arrow_forwarddescribe the structural and physiological differencesbetween cardiac muscle and skeletal muscle;arrow_forwardDescribe the structural and functional characteristics of cardiac muscle tissue and the cardiac conduction system.arrow_forward
- Explain the concept of tetany in skeletal muscle. Can cardiac muscle be tetanized? Explain the physiological significance of your answer.arrow_forwardWhich is more resistant to fatigue, cardiac muscle or skeletal muscle? What is the anatomical basis for this difference, and why is it important?arrow_forwardThe contracting cells of the heart are a type of striated muscle that is said to work as a functional syncytium. Provide a definition for “functional syncytium” and describe important functional characteristics and cellular specializationsarrow_forward
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