Label the axons, dendrites, and soma of the nerve cell. Then, give a short description of this cell. Also, label all the visible parts of the cardiac muscle, describe the cell and identify its shape.
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Label the axons, dendrites, and soma of the nerve cell. Then, give a short description of this cell.
Also, label all the visible parts of the cardiac muscle, describe the cell and identify its shape.
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- Fill in the blank: Endings of sympathetic nerve fibers secrete _______________________, which causes the heart rate to increase.Cardiac muscle tissue (____×) Location _______________________ Function _______________________Select 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.
- Fill in the blanks below by tracing a drop of blood through the heart and lungs (include the pulmonary vessels). [Starting with the superior vena cava, which vessel, valve, or chamber does the blood go next…] superior vena cava _________ _________ _________ _________ _________ pulmonary capillaries ________ ________ ________ ________ ________ aortaChoose the statement(s) that are correct about serous membranes. Select all that apply. Visceral pericardium covers the surface of the heart, and parietal pericardium lines the interior of the heart. Serous membranes line body cavities that are open to the outside. Serous membranes are very thin, double-layered structures. Serous membranes secrete a watery lubricating fluid.Unlike skeletal and smooth muscle tissue, cardiac muscle is “self-excitable”. Explain how this property of cardiac muscle works, and why it is important in the cardiac cycle. please help with examples
- What factors increase the chance of surviving a cardiac arrest? a)______________________________________________ B______________________________________________ c)______________________________________________Consider the circulation of blood through the heart. Put the structures in the order that blood flows through them, starting with the superior and inferior venae cavae|(#1) and ending with the ascending aorta (#14).NOTES 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 circulation