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Anatomy chapter 12

QuestionAnswer
The area in which the heart is located is called the mediastinum
The outermost of the pericardial membranes is the fibrous pericardium
The middle layer of the pericardial membranes is the parietal
The innermost of the pericardial membranes is the visceral
The visceral pericardium is also called the epicardium
The function of the serous fluid of the pericardial membranes is to prevent friction
The lining of the chambers of the heart is the endocardium
The walls of the chambers of the heart are formed by the myocardium
The layer of the heart wall that prevents abnormal clotting in the endocardium
The layer of the heart wall that pumps blood is the myocardium
what returns blood from the upper body to the right atrium superior vena cava
what returns blood from the lower body to the right atrium inferior vena cava
what return blood from the lungs to the left atrium pulmonary veins
The general function of all the valves of the heart is to prevent backflow of blood
Within the heart, backflow of blood is prevented by the valves
The right and left AV valves close when the ventricles
The aortic and pulmonary semilunar valves close when the ventricles relax
For the myocardium, the most important substance in the blood is oxygen
The term for contraction of the chambers of the heart is systole
The term for relaxation of the chambers of the heart is diastole
The sequence of events in one heartbeat is called the cardiac cycle
The cardiac cycle is the sequence of events in one heartbeat
During the cardiac cycle, when the ventricles are in systole, the atria are in diastole
During the cardiac cycle, when the atria are in systole, the ventricles are in diastole
In the cardiac cycle, all blood from the ventricles to the arteries must be pumped
The part of the heart that initiates each beat is the SA node
The normal range of resting heart rate for a healthy adult is 60 to 80 bpm
The parts of the cardiac conduction pathway in the ventricles, in order, are the AV bundle, bundle branches and Purkinje fibers
The electrical activity of the heart may be seen in a tracing called a(n) ECG; electrocardiogram
The part of the heart muscle that usually depolarizes first in a heartbeat is the SA node
Cardiac output is the amount of blood pumped by the left ventricle in one minute
The amount of blood pumped by the left ventricle in one minute is called cardiac output
Stroke volume is the amount of blood pumped by a ventricle in one beat
The amount of blood pumped by a ventricle in one beat is called stroke volume
If cardiac output is 4900 mL and pulse is 70 bpm, then stroke volume is 70 mL
If stroke volume is 80 mL and pulse is 70 bpm, then cardiac output is 5600 mL
If cardiac output is 6000 mL and stroke volume is 75 mL, then pulse is 80 bpm
During exercise, if cardiac output is 15,000 mL and stroke volume is 120 mL, then pulse is 125 bpm
During exercise, if pulse is 140 and the stroke volume is 110 mL, the cardiac output is 15,400 mL
A basketball player has a resting cardiac output of 5400 mL, a stroke volumes of 90 mL, and a resting pulse of 60 bpm
The difference between the resting cardiac output and the maximum cardiac output is called the cardiac reserve
The percent of the blood in a ventricle that is pumped out during systole is called the ejection fraction
The part of the brain that regulates heart rate is the medulla
The heart rate is increased by impulses carried by sympathetic nerve
Impulses carried by sympathetic nerves to the heart will increase
The area in which the heart is located is called the mediastinum
The outermost of the pericardial membranes is the fibrous pericardium
The middle layer of the pericardial membranes is the parietal
The innermost of the pericardial membranes is the visceral
The visceral pericardium is also called the epicardium
The function of the serous fluid of the pericardial membranes is to prevent friction
The lining of the chambers of the heart is the endocardium
The walls of the chambers of the heart are formed by the myocardium
The layer of the heart wall that prevents abnormal clotting in the endocardium
The layer of the heart wall that pumps blood is the myocardium
what returns blood from the upper body to the right atrium superior vena cava
what returns blood from the lower body to the right atrium inferior vena cava
what return blood from the lungs to the left atrium pulmonary veins
The general function of all the valves of the heart is to prevent backflow of blood
Within the heart, backflow of blood is prevented by the valves
The right and left AV valves close when the ventricles
The aortic and pulmonary semilunar valves close when the ventricles relax
For the myocardium, the most important substance in the blood is oxygen
The term for contraction of the chambers of the heart is systole
The term for relaxation of the chambers of the heart is diastole
The sequence of events in one heartbeat is called the cardiac cycle
The cardiac cycle is the sequence of events in one heartbeat
During the cardiac cycle, when the ventricles are in systole, the atria are in diastole
During the cardiac cycle, when the atria are in systole, the ventricles are in diastole
In the cardiac cycle, all blood from the ventricles to the arteries must be pumped
The part of the heart that initiates each beat is the SA node
The normal range of resting heart rate for a healthy adult is 60 to 80 bpm
The parts of the cardiac conduction pathway in the ventricles, in order, are the AV bundle, bundle branches and Purkinje fibers
The electrical activity of the heart may be seen in a tracing called a(n) ECG; electrocardiogram
The part of the heart muscle that usually depolarizes first in a heartbeat is the SA node
Cardiac output is the amount of blood pumped by the left ventricle in one minute
The amount of blood pumped by the left ventricle in one minute is called cardiac output
Stroke volume is the amount of blood pumped by a ventricle in one beat
The amount of blood pumped by a ventricle in one beat is called stroke volume
If cardiac output is 4900 mL and pulse is 70 bpm, then stroke volume is 70 mL
If stroke volume is 80 mL and pulse is 70 bpm, then cardiac output is 5600 mL
If cardiac output is 6000 mL and stroke volume is 75 mL, then pulse is 80 bpm
During exercise, if cardiac output is 15,000 mL and stroke volume is 120 mL, then pulse is 125 bpm
During exercise, if pulse is 140 and the stroke volume is 110 mL, the cardiac output is 15,400 mL
A basketball player has a resting cardiac output of 5400 mL, a stroke volumes of 90 mL, and a resting pulse of 60 bpm
The difference between the resting cardiac output and the maximum cardiac output is called the cardiac reserve
The percent of the blood in a ventricle that is pumped out during systole is called the ejection fraction
The part of the brain that regulates heart rate is the medulla
The heart rate is increased by impulses carried by sympathetic nerve
Impulses carried by sympathetic nerves to the heart will increase the heart rate
The heart rate is decreased by impulses carried by parasympathetic; vagus nerve
Impulses carried by the vagus nerves to the heart will decrease the heart rate
The sensory nerves for the carotid sinus and body are the glossopharyngeal nerves
The sensory nerves for the aortic sinus and body are the vagus nerves
carotid sinus is strategically located to The detect changes as the blood is on its way to the brain
The aortic sinus is strategically located to detect changes as soon as the blood leaves the heart
 

 



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