Anatomy & Physiology
1st Edition
ISBN: 9781938168130
Author: Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher: OpenStax College
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Textbook Question
Chapter 19, Problem 7RQ
The myocardium would be the thickest in the ________.
- left atrium
- left ventricle
- right atrium
- right ventricle
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Chapter 19 Solutions
Anatomy & Physiology
Ch. 19 - Visit this site...Ch. 19 - Which of the following is not important in...Ch. 19 - Which valve separates the left atrium from the...Ch. 19 - Which of the following lists the valves in the...Ch. 19 - Which chamber initially receives blood from the...Ch. 19 - The ________ layer secretes chemicals that help to...Ch. 19 - The myocardium would be the thickest in the...Ch. 19 - In which septum is it normal to find openings in...Ch. 19 - Which of the following is unique to cardiac muscle...Ch. 19 - The influx of which ion accounts for the plateau...
Ch. 19 - Which portion of the ECG corresponds to...Ch. 19 - Which component of the heart conduction system...Ch. 19 - The cardiac cycle consists of a distinct...Ch. 19 - Most blood enters the ventricle during ________....Ch. 19 - The first heart sound represents which portion of...Ch. 19 - Ventricular relaxation immediately follows...Ch. 19 - The force the heart must overcome to pump blood is...Ch. 19 - The cardiovascular centers are located in which...Ch. 19 - In a healthy young adult, what happens to cardiac...Ch. 19 - What happens to preload when there is venous...Ch. 19 - Which of the following is a positive inotrope? Na+...Ch. 19 - The earliest organ to form and begin function...Ch. 19 - Of the three germ layers that give rise to all...Ch. 19 - The two tubes that eventually fuse to form the...Ch. 19 - Which primitive area of the heart will give rise...Ch. 19 - The pulmonary trunk and aorta are derived from...Ch. 19 - Describe how the valves keep the blood moving in...Ch. 19 - Why is the pressure in the pulmonary circulation...Ch. 19 - Why is the plateau phase so critical to cardiac...Ch. 19 - How does the delay of the impulse at the...Ch. 19 - How do gap junctions and intercalated disks aid...Ch. 19 - Why do the cardiac muscles cells demonstrate...Ch. 19 - Describe one cardiac cycle, beginning with both...Ch. 19 - Why does increasing EDV increase contractility?Ch. 19 - Why is afterload important to cardiac function?Ch. 19 - Why is it so important for the human heart to...Ch. 19 - Describe how the major pumping chambers, the...
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- The term _________________ ECG means a record or picture of the electrical activity of the heart electr/o means electric, and cardi/o means heart.arrow_forwardThe abnormal narrowing of a blood vessel is ____________________.arrow_forwardJuanita Gomez was diagnosed as having ___________________________. This bone marrow disorder is characterized by the insufficient production of one or more types of blood cells.arrow_forward
- The myocardium of the ____________ ventricle is normally thickest. left rightarrow_forwardThe left atrium is the most posterior cardiac chamber. True/falsearrow_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 source of blood carried to capillaries in the myocardium would be the _____. Coronary veins Coronary sinus Fossa ovalis Coronary arteriesarrow_forward
- In the human heart, the right atrium is _________ to the right ventricle.arrow_forwardThe wall of the aorta is _______ (thicker/thinner) than the wall of the superior vena cava.arrow_forwardBlood flows directly from __________ into capillary beds. A arterioles B venules C muscular arteries D elastic arteriesarrow_forward
- Why is the left ventricle more muscular than the right ventricle (in heart)? Please write very detailed (at least 300 words) explanation. Thanksarrow_forwardIn the sheep's heart, the right atrium is _______ to the right ventricle.arrow_forwardPressure in the ventricle would be lowest during _____. atrial systole ventricular systole ventricular diastole isovolumetric relaxation diastisisarrow_forward
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