Laboratory Manual For Human Anatomy & Physiology
4th Edition
ISBN: 9781260159080
Author: Martin, Terry R., Prentice-craver, Cynthia
Publisher: Mcgraw-hill Education,
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Chapter 10, Problem 7PL
Summary Introduction
Introduction:
Cardiac muscle is limited to the heart wall and the cardiac muscle cells are branched, striated and have a single nucleus. It is under involuntary control. Its cells are often called cardiocytes. Intercalated discs are unique structures found in heart tissue, which helps in signal transmission between cardiocytes.
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Chapter 10 Solutions
Laboratory Manual For Human Anatomy & Physiology
Ch. 10 - Which muscle tissue is under conscious control?...Ch. 10 - Which of the following organs lacks smooth muscle?...Ch. 10 - Which muscle tissue lacks striations? cardiac...Ch. 10 - Which of the following conduct action potentials?...Ch. 10 - Muscles of facial expression are smooth muscles....Ch. 10 - Which muscle tissue is multinucleated? skeletal...Ch. 10 - Prob. 7PLCh. 10 - Both cardiac and skeletal muscle cells are under...Ch. 10 - Match the tissues in column A with the...Ch. 10 - The word fiber is used to describe a structure in...
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- Please help me label theses itemsarrow_forwardFill in the blank: In the presence of damaged blood vessels, platelets release a substance called _______________________ thatcauses smooth muscle contraction.arrow_forwardWhat factors increase the chance of surviving a cardiac arrest? a)______________________________________________ B______________________________________________ c)______________________________________________arrow_forward
- Draw a labeled cardiac muscle action potential.arrow_forwardCan cardiac muscle exhibit (normally or under experimental conditions) summation or complete tetanus as does skeletal muscle? Why not? (highlight the main answer)arrow_forwardSelect the correct answer for each question. Explain why you chose that answer as opposed to the others. In other words, explain why the other choices are incorrect. Select the correct statement about the function of myocardial cells. Cardiac muscle cells are innervated by sympathetic, parasympathetic, and somatic nerve fibers so that the nervous system can increase heart rate. The refractory period in skeletal muscle is much longer than that in cardiac muscle. The influx of potassium ions from extracellular sources is the initiating event in cardiac muscle contraction. The entire heart contracts as a unit or it does not contract at all.arrow_forward
- Fill in the blank: The _______________________ normally controls the heart rate.arrow_forwardSelect the correct answer for each question. Explain why you chose that answer as opposed to the others. In other words, explain why the other choices are incorrect. The plateau phase of an action potential in cardiac muscle cells is due to the _____. Efflux of K+ through K+ channels Efflux of Ca2+ through fast Ca2+ channels Influx of Ca2+ through slow Ca2+ channels Influx of Na+ through fast Na+ channelsarrow_forwardUnlike skeletal muscle, cardiac muscle doesn’t undergo tetany. Explain how this is achieved and why is this necessary?arrow_forward
- Fill in the blank: The QRS complex corresponds to depolarization of the muscle fibers of the _______________________.arrow_forwardCan cardiac muscle exhibit (normally or under experimental conditions) summation or complete tetanus as does skeletal muscle? Why not? (highlight the main concepts)arrow_forwardNOTES and the left side serving the systemic circuit. In Figure 16-15, complete the schematic showing the blood flow to and from the heart (the starting points are given to you). Use a blue pen or pencil to denote the direction of deoxygenated blood and a red pen or pencil for oxygenated blood flow. Include the names of the major vessels, chambers, and valves involved, based on the following list: lung capillary beds body capillary beds right ventricle left ventricle bicuspid valve superior vena cava tricuspid valve inferior vena cava pulmonary semilunar valve pulmonary trunk aortic semilunar valve R. and L. pulmonary arteries R. and L. pulmonary veins aorta Pulmonary Circulation Systemic Circulation Right atrium Left atrium URA--YCK HAT Lungs Body Figure 16-15. Schematic of circulationarrow_forward
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