haney apch14 Word Scramble
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Question | Answer |
How is the heart positioned? | The heart is positioned obliquely between the lungs in the mediastinum. |
How much bulk likes to the left side of the midline of the body? | two thirds |
What is the bulk shaped like? | a Blunt cone |
What is another name for the pericardial sac? | parietal pericardium |
What is the outer most layer of the pericardial sac? | fibrous pericardium |
What is the fibrous pericardium made of? | Though fibrous connective tissue and connects to the large blood vessels that enter and leave the heart. |
What does the fibrous pericardium prevent? | overdistention of the pumping heart by acting as a tough protective membrane. |
What is the inner most layer of the pericardial sac? | serous pericardium |
Is the layer thin? | yes |
What does the serous pericardium continue? | the outermost layer of the wall of the heart called the epicardium at the base of the heart. |
What is the outermost layer of the wall of the heart called? | epicardium or visceral pericardium |
Is the epicardium thin? | yes |
Is the epicardium transparent? | yes |
what is the space in between the epicardium and the serous pericardium called? | the pericardial cavity |
What is the fluid called in the pericardial carity? | pericardial fluid |
what does the pericardial fluid prevent? | friction and erosion of the tissue between the membranes |
What is the second layer of the wall of the heart? | myocardium |
Where is the layer located? | layer of cardiac muscle tissue |
Are the cells or fibers in the myocardium involuntary? | yes |
What is the myocradium layer responsible for? | contractions of the heart |
What is the thrid layer of the wall of the heart called? | endocardium |
What is the endocardium a thin layer of? | the endothelium |
What is the name of the two sides of the heart? | the right atrium and left atruim |
What is the external appendage called? | auricle |
How did auricle get its name? | because of its similarity to the ear of a dog. |
What does the auricle do? | it increases the bolume of the atrium |
Is he liking of the atrium smooth? | yes except for the anterior atrial walls and the lining of thhe two auricles. |
What are the two atria separated by? | an internal interatrial septum |
What is the projecting muscle bundle called? | musculi perctinati |
What is the left and right ventrical separated by? | an internal interventricular septum |
What are the irregular rides and folds of the myocardium of the ventricles called? | trabeculae |
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sderifaj
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