Homework Answers
The heartbeat is created by an electrical signal that starts in the heart’s upper right chamber (right atrium). The signal is produced in an area of specialized cells in the atrium called the sinus node.The electrical signal moves down through the heart to the atrioventricular node,that is located in the center of the heart between the atria and ventricles. The AV node is sometimes referred to as an electrical relay station because its function is to slow the electrical current before it passes to the lower chambers of the heart.From the AV node, the electrical current travels to the ventricles along special fibers embedded in the heart walls. When the current arrives in the ventricles, they contract and pump blood out to the body.
In heart block,the electrical signal that controls the heartbeat is partially or completely blocked from reaching the ventricles. Hence Causing the ventricles relax for a shorter period of time.
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Heart Block is one type of electrical defect in the heart in
which the electrical signal...
What happens immediately after an electrical signal is sent from the sinoatrial node before it reaches...
What happens immediately after an electrical signal is sent from the sinoatrial node before it reaches the atrioventricular node in a healthy heart? o Atrial contraction of both atria. o Ventricular contraction of the left ventricle. o Atrial contraction of the right atria. o Ventricular contraction of both ventricles.
In an adult, a heart rate of 60-100 beats/min is a normal sinus rhythm (NSR). A...
In an adult, a heart rate of 60-100 beats/min is a normal sinus rhythm (NSR). A heart rate at or above 101 beats/min is called tachycardia, but in young children, this rate would be considered normal. Heart rates belovw 60 beats/min are normal for highly conditioned individuals, but in most adults this is bradycardia I. Calculate the heart rate for the ECGx.0 Diagnosis P-R intervals: Normal P-R intervals are between 0.12 and 0.2 seconds, averaging about 0.16 seconds. P-F intervals...
please help me fill this ☺️ ons for Review: the letter for the correct word in...
please help me fill this ☺️
ons for Review: the letter for the correct word in each blank. A recording of the electrical activity of the heart. The period when the atria are depolarizing, A Angina pectoris The period when the ventricles are repolarizing B. Bradycardia The period during which the ventricles are depolarizing, C Electrocardiogram D. Fibrillation which precedes their contraction E Heart block 5. __ An abnormally slow heartbeat, that is, slower than 60 F. P wave beats...
You are studying the heart of a strange newly-discovered primate species. Its basic structure is like...
You are studying the heart of a strange newly-discovered primate
species. Its basic structure is like that of the human heart, but
the timing of the wave of excitation which emanates from the
SA-node and spreads throughout the atria and ventricles are quite
different. The figure below shows the time of arrival of the wave
at various points in the heart relative to its generation at the
SA-node.
Cardiac action potentials were recorded at different points in
the atrial and...
2 Physiology of the Heart he was in wahren in A Pins the answer Column Column...
2 Physiology of the Heart he was in wahren in A Pins the answer Column Column A Angina pector L. Anne of the cercalativity B. Bradycardia 2. The pred when the rare depolar C. Hectrocarde D. Fibrillation E Heart block The period when the ventricles are real The period during which the ventricles are depolarising, which precedes their contraction FP wave G. QRS wave 5. An abnormally slow heartbeat, that is, slower than 60 beats per minute HT Wave I...
7. Correlate heart sounds with heart action The first heart sound results from the closing of...
7. Correlate heart sounds with heart action The first heart sound results from the closing of which valves? The second heart sound results for the closing of which valves? 8. Describe the basic contraction characteristics of the heart. Contraction of the heart muscle is referred to as Relaxation of the heart muscle is referred to as Remember the ventricles contract 'upward from the apex to the base-forcing blood out of the heart, and that the atria contract downward' from the...
NAME SID__ 31. Which of the following is a correct statement when comparing Open Circulatory Systems...
NAME SID__ 31. Which of the following is a correct statement when comparing Open Circulatory Systems and Closed Circulatory Systems? a. Open Circulatory Systems generally require MORE energy to operate, since it is less efficient to circulate the entire amount of interstitial fluid in the body cavity. 8. Arthropods and Insects generally use a Closed Circulatory System, while vertebrates generally use an Open Circulatory System Both systems utilize some form of the following three components: (1) circulatory fluid, (2) vessels...
Please answer all questions. Thank You? 31) Sympathetic nerve stimulation and epinephrine heart activity. A) increase...
Please answer all questions. Thank You?
31) Sympathetic nerve stimulation and epinephrine heart activity. A) increase B) decrease C) have no effect on D) The heart responds to hormones, but not to nerve stimulation. E) The heart responds to nerve stimulation, but not to hormones. 52) Rheumatic Tever is a bacterial disease that can result in degeneration of heart valves. That would cause A) slower heartbeat. B) uncoordinated attraction of ventricles. C) faster heart beat. D) backfire of blood from...
This is an example of what type of heart rhythm? sal-ns-acls Asystole Ventricular fibrillation Normal sinus...
This is an example of what type of heart rhythm? sal-ns-acls Asystole Ventricular fibrillation Normal sinus rhythm Atrial fibrillation Thirty ____________ and two ____________ equal one cycle of CPR. Chest compressions, ventilations Chest compressions, pulse checks Ventilations, compressions Chest compressions, jaw lifts Which of the following can be a result of prolonged asystole? Severe brain damage Lack of oxygen to vital organs Severe myocardial ischemia All of the above The following drugs and/or interventions may be used in the ACS...
.. FVC d. EKG c. Band D 53. The valve between the left upper and lower chambers of the heart is the a p...
.. FVC d. EKG c. Band D 53. The valve between the left upper and lower chambers of the heart is the a pulmonic semilunar valve. b. tricuspid valve. e. mitral valve. d. aortic semilunar valve. 54. Another name for the bicuspid valve is pulmonic semilunar valve. b. tricuspid valve. c. mitral valve d. aortic semilunar valve. 55. Use of ultrasonic waves directed through the heart to study the structure and motion of the heart is a FCHO. b. ECG...
In an adult, a heart rate of 60-100 beats/min is a normal sinus rhythm (NSR). A heart rate at or above 101 beats/min is called tachycardia, but in young children, this rate would be considered normal. Heart rates belovw 60 beats/min are normal for highly conditioned individuals, but in most adults this is bradycardia I. Calculate the heart rate for the ECGx.0 Diagnosis P-R intervals: Normal P-R intervals are between 0.12 and 0.2 seconds, averaging about 0.16 seconds. P-F intervals...
please help me fill this ☺️
ons for Review: the letter for the correct word in each blank. A recording of the electrical activity of the heart. The period when the atria are depolarizing, A Angina pectoris The period when the ventricles are repolarizing B. Bradycardia The period during which the ventricles are depolarizing, C Electrocardiogram D. Fibrillation which precedes their contraction E Heart block 5. __ An abnormally slow heartbeat, that is, slower than 60 F. P wave beats...
You are studying the heart of a strange newly-discovered primate
species. Its basic structure is like that of the human heart, but
the timing of the wave of excitation which emanates from the
SA-node and spreads throughout the atria and ventricles are quite
different. The figure below shows the time of arrival of the wave
at various points in the heart relative to its generation at the
SA-node.
Cardiac action potentials were recorded at different points in
the atrial and...
2 Physiology of the Heart he was in wahren in A Pins the answer Column Column A Angina pector L. Anne of the cercalativity B. Bradycardia 2. The pred when the rare depolar C. Hectrocarde D. Fibrillation E Heart block The period when the ventricles are real The period during which the ventricles are depolarising, which precedes their contraction FP wave G. QRS wave 5. An abnormally slow heartbeat, that is, slower than 60 beats per minute HT Wave I...
7. Correlate heart sounds with heart action The first heart sound results from the closing of which valves? The second heart sound results for the closing of which valves? 8. Describe the basic contraction characteristics of the heart. Contraction of the heart muscle is referred to as Relaxation of the heart muscle is referred to as Remember the ventricles contract 'upward from the apex to the base-forcing blood out of the heart, and that the atria contract downward' from the...
NAME SID__ 31. Which of the following is a correct statement when comparing Open Circulatory Systems and Closed Circulatory Systems? a. Open Circulatory Systems generally require MORE energy to operate, since it is less efficient to circulate the entire amount of interstitial fluid in the body cavity. 8. Arthropods and Insects generally use a Closed Circulatory System, while vertebrates generally use an Open Circulatory System Both systems utilize some form of the following three components: (1) circulatory fluid, (2) vessels...
Please answer all questions. Thank You?
31) Sympathetic nerve stimulation and epinephrine heart activity. A) increase B) decrease C) have no effect on D) The heart responds to hormones, but not to nerve stimulation. E) The heart responds to nerve stimulation, but not to hormones. 52) Rheumatic Tever is a bacterial disease that can result in degeneration of heart valves. That would cause A) slower heartbeat. B) uncoordinated attraction of ventricles. C) faster heart beat. D) backfire of blood from...
.. FVC d. EKG c. Band D 53. The valve between the left upper and lower chambers of the heart is the a pulmonic semilunar valve. b. tricuspid valve. e. mitral valve. d. aortic semilunar valve. 54. Another name for the bicuspid valve is pulmonic semilunar valve. b. tricuspid valve. c. mitral valve d. aortic semilunar valve. 55. Use of ultrasonic waves directed through the heart to study the structure and motion of the heart is a FCHO. b. ECG...
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