Essentials of Human Anatomy & Physiology (12th Edition)
12th Edition
ISBN: 9780134395326
Author: Elaine N. Marieb, Suzanne M. Keller
Publisher: PEARSON
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Chapter 1, Problem 22CT
Summary Introduction
To analyze:
Whether the feedback system is positive or negative during the blood clotting process.
Introduction:
The homeostasis is the tendency of the body of a living organism to maintain the relatively balanced or stable internal environment, even though the external environment changes continuously. The components or factors like receptor, control center, effector, and feedback are components of homeostasis that bring about the changes involved in maintaining the internal environment of an organism.
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| 15
HEART
The structure of the heart allows it to serve as two distinct pumps. One side of the heart pumps blood to the lungs
while the other side propels oxygenated blood throughout the body. The heart is unique in other ways as well. For
example, it consists of muscle found nowhere else in the body. What's more, cardiac cells can generate and
transmit electrical impulses spontaneously. Learn more about the characteristics of this vital organ by completing
the activities in this chapter.
Conceptualize in Color Heart Layers
Test your knowledge of the layers of the heart's wall and the pericardium by coloring the figure as suggested.
• Endocardium: Light pink
• Myocardium: Dark pink
• Fibrous pericardium: Orange
• Serous pericardium: Light blue
• Place green Xs in the pericardial space.
• Draw a bracket linking the layers that make up the
serous pericardium.
Chapter 15 Heart
185
chapter
Chapter 1 Solutions
Essentials of Human Anatomy & Physiology (12th Edition)
Ch. 1 - Prob. 1MCCh. 1 - Prob. 2MCCh. 1 - More than one choice may apply. Using the terms...Ch. 1 - Match the proper anatomical term (column B) with...Ch. 1 - Anatomical terms that apply to the backside of the...Ch. 1 - A neurosurgeon orders a spinal tap for a patient....Ch. 1 -
7. Which of the following groupings of the...Ch. 1 - Which of the following is (are) involved in...Ch. 1 - Define anatomy and physiology.Ch. 1 - List the 11 organ systems of the body, briefly...
Ch. 1 - Many body structures are symmetrical. Are the...Ch. 1 - 12. On what body surface is each of the following...Ch. 1 - 13. Which of the following organ...Ch. 1 - Explain the meaning of bomeostasis as applied to...Ch. 1 - 15. What is the consequence of loss of...Ch. 1 - 16. A nurse informed John that she was about to...Ch. 1 - Jennifer fell off her motorcycle and tore a nerve...Ch. 1 - Mr. Garica is behaving abnormally and doctors...Ch. 1 - 19. Parathyroid hormone (PTH) is secreted in...Ch. 1 - 20. Mr. Harvey, a computer programmer, has been...Ch. 1 - Prob. 21CTCh. 1 - Prob. 22CTCh. 1 - 23. How is the concept of homeostasis (or its...
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- Figure 33.21 State whether each of the following processes are regulated by a positive feedback loop or a negative feedback loop. A person feels satiated after eating a large meal. The blood has plenty of red blood cells. As a result, erythropoietin, a hormone that stimulates the production of new red blood cells, is no longer released from the kidney.arrow_forwardAn example of a positive feedback mechanism is blood clotting in which certain clotting factors active other factors until a plug forms to stop bleeding. Is this process involved in homeostasis? no, positive feedback mechanisms cannot regulate homeostasis no, it is not a negative feedback mechanism no, it does not fit into a classic "push-pull" action no, because it does not result in restoring blood volume O yes, because it is part of a bigger negative feedback mechanism to maintain optimal levels of blood volume. E O O O O Carrow_forwardFill in the table below by indicating the organ, region or vessel that the named vessel receives blood from, and the organ, region or vessel to which it delivers blood (see example for aorta and coronary arteries). If you’re doing it right, both columns will have the same answer. You will need to refer to the images in your textbook and lab models to do this. VESSELS OF THE THORACIC CAVITY Artery Blood goes to (organ/region) Blood comes from (organ/region) Vein Aorta entire systemic circuit entire systemic circuit vena cava inferior & superior coronary left & right myocardium coronary left & right Brachiocephalic Brachiocephalic subclavian left & right subclavian left & right Intercostals azygos (not pictured) Pulmonary Pulmonary VESSELS OF THE ABDOMINAL CAVITY Artery Blood goes to (organ/region) Blood comes from (organ/region) Vein celiac trunk…arrow_forward
- Why is human heart important?arrow_forwardMay I get help with this question? Scenario: Michelle Q. experienced a recent chest injury, and now her ventricular contractions pump less blood into her pulmonary arteries & aorta as they did during her days as an Olympian. The cardiologist tells her this will lower her cardiac output, but doesn't elaborate. Michelle is a curious sort and would like you to tell her why her cardiac output is going to decrease. You tell Michelle….arrow_forwardBlood flows from the heart (specifically, the left ventricle) into the aorta to feed the rest of the body oxygen. As blood flow moves from the ascending aorta and downward to the abdominal aorta, some of the volume is directed through a branching network. As the blood reaches the pelvic region, there is a bifurcation, as shown in figure, into the left and right common iliac arteries. This bifurcation is symmetrical but the common iliac vessels are not the same diameter. Given that the kinematic viscosity of blood is 4 cSt (centistokes), the abdominal aorta’s diameter is 15 mm, the right common iliac artery’s diameter is 10 mm, and the left common iliac artery’s diameter is 8 mm, determine the mean flow rate through the right common iliac artery if the abdominal aorta’s mean velocity is 30 cm/s and the left common iliac artery’s mean velocity is 40 cm/s.arrow_forward
- Miriam goes on a hunger strike and enters into starvation. This would result in: Group of answer choices increased tissue colloidal osmotic pressure. increased blood pressure. increased lymph production. increased blood colloidal osmotic pressure. more than one of the above.arrow_forwardAt that time balloon angioplasty was carried out and a stent placed inside his left anterior descending artery. Leo then spent several days in the cardiac intensive care unit followed by time in a rehab unit to complete his recovery. What long term effects might an MI have on Leo’s heart muscle tissue?arrow_forwardCardiomyocytes are similar to skeletal muscle because: a. they beat involuntarily b. they are used for weight lifting c. they pulse rhythmically d. they are striatedarrow_forward
- What happens to your veins as your arm reaches the height of your heart? Why do you think this happens>arrow_forwardIn bypass surgery, the cardiovascular surgeon will collect a portion of the living saphenous vein from the patient and implant it as a shunt between the same patient's ascending aorta and distal coronary artery. What do you think would happen to the vein tissue after a few weeks of exposing the vein cells to arterial pressure and flow conditions? (minimum 30 words)arrow_forwardWhich of the following is the correct sequence of blood flow through pulmonary circulation? Group of answer choices Right atrium → right ventricle → pulmonary arteries → pulmonary capillaries (in lungs) → pulmonary veins → left atrium Left atrium → left ventricle → pulmonary arteries → pulmonary capillaries (in lungs) → pulmonary veins → right atrium Right atrium → right ventricle → pulmonary capillaries (in lungs) → pulmonary arteries → pulmonary veins → left atrium Left atrium → left ventricle → pulmonary capillaries (in lungs) → pulmonary arteries → pulmonary veins → right atrium Left atrium → left ventricle → pulmonary veins → pulmonary arteries → pulmonary capillaries (in lungs) → right atriumarrow_forward
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