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HW/ ch 19

Anatomy and Physiology = Bio 2020; CH 19

TermDefinition
Oxygen-poor blood enters which chamber of the heart? Right atrium
The right atrioventricular valve is also called the Tricuspid valve
The only arteries in the body that carry oxygen-poor blood are the coronary arteries. False
Left ventricular contraction propels blood through which valve? Aortic valve
How many pulmonary veins are there? Four
The right atrioventricular valve is also called the tricuspid valve
The only arteries in the body that carry oxygen-poor blood are the coronary arteries. False
Left ventricular contraction propels blood through which valve? Aortic valve
Which of the following is not true for ventricular systole? The ventricles relax
The ventricles begin to fill during ventricular diastole. True
The semilunar valves close during ventricular diastole
The atrioventricular valves open during ventricular diastole
The ventricles begin to fill during ventricular diastole. True
Atrial contraction accounts for most of the ventricular filling. False
Which of the following is not true for ventricular systole? The ventricles relax
The ventricles begin to fill during ventricular diastole. True.
During which event of the cardiac cycle does aortic pressure reach its maximum? Ventricular ejection
During which event of the cardiac cycle do the atria both relax and contract? Ventricular filling
During which event of the cardiac cycle do both the atria and ventricles relax? Isovolumetric relaxation
The audible heart sounds are caused by the contraction of the atria and ventricles. False
Pulmonary arteries carry highly oxygenated blood. False
Which of the following is the region of the thoracic cavity where the heart is located? Mediastinum
Function of pericardium Aid the heart in the strength of contractions
The external layer of the heart wall is the epicardium
In the right atrium, the auricle and anterior wall exhibit obvious muscular ridges called pectinate muscles
Characteristics of cardiac muscle Cells are long and cylindrical; Cells have multiple nuclei at the periphery of the cell
The cells of the ___________ act as the heart's pacemaker, which establishes the pace for cardiac activity. sinoatrial (SA) node
Check all that occur during ventricular systole
Created by: svalde1907