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The Cardiovascular System: The Heart

Matt Hively

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Across
1.Folds of fibrous tissue that ensures a one-way flow of blood from the atria into the ventricles. (2 Words)
4.Receives blood from the systemic circuit. (2 Words)
7.A transthoracic interpretation of the electrical activity of the heart over a period of time. Detected by electrodes attached to the outer surface of the skin and recorded by a machine.
8.The innermost layer of tissue that lines the chambers of the heart.
10.Conduct an electrical stimulus or impulse that enables the heart to contract in a coordinated fashion. (2 Words)
11.The contraction of the heart.
15.A tissue mass embedded in the posterior wall of the right atrium near the entrance of the superior cava. (2 Words)
18.Ejects blood into the systemic circuit. (2 Words)
19.The location where cardiac muscle is in contact with one another. (2 Words)
20.The period of time when the heart refills with blood after contraction.
Down
2.Activates sympathetic motor neurons. (2 Words)
3.The lining of the pericardial cavity that is serous membrane.
5.Space between the parietal pericardium and visceral layer which contains a supply of serous fluid. (2 Words)
6.Produces adjustments in heart rate in response to an increase in the venous return, the flow of venous blood to the heart. (2 Words)
9.The muscular wall of the heart.
12.Covers the out surface of the heart.
13.Discharges blood into the pulmonary circuit. (2 Words)
14.The amount of blood pumped by each ventricle in 1 minute. (2 Words)
16.All or any of the events related to the flow or blood pressure that occurs from the beginning of one heartbeat to the beginning of the next. (2 Words)
17.Collects blood from the pulmonary circuit. (2 Words)

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