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Circulatory System - Greenacre Academy Trust
... Describe how the circulatory system transports substances around the body in terms the structures and functions of arteries, veins and capillaries. Label the images of the blood vessels with their names. For each blood vessel, give at least one feature of its structure and at least one reason for ea ...
... Describe how the circulatory system transports substances around the body in terms the structures and functions of arteries, veins and capillaries. Label the images of the blood vessels with their names. For each blood vessel, give at least one feature of its structure and at least one reason for ea ...
Cardiovascular System
... Structure of the Heart Heart Size – about 14 cm x 9 cm (the size of a fist). Located in the mediastinum (space between lungs, backbone, sternum), between the 2nd rib and the 5th intercostal space. The distal end of the heart is called the apex. ...
... Structure of the Heart Heart Size – about 14 cm x 9 cm (the size of a fist). Located in the mediastinum (space between lungs, backbone, sternum), between the 2nd rib and the 5th intercostal space. The distal end of the heart is called the apex. ...
EKG
... ELECTROCARDIOGRAM An electrocardiogram (EKG or ECG) is a graphic representation of the heart’s electrical activity. ...
... ELECTROCARDIOGRAM An electrocardiogram (EKG or ECG) is a graphic representation of the heart’s electrical activity. ...
L5 Heart anatomy
... The left ventricle is considerably larger than the right ventricle because while the right ventricle only pumps blood to the lungs, the left ventricle must pump to the rest of the body ...
... The left ventricle is considerably larger than the right ventricle because while the right ventricle only pumps blood to the lungs, the left ventricle must pump to the rest of the body ...
Ventricular Tachyarrhythmia
... decompensation can be treated medically to achieve acute termination by the intravenous administration of amiodarone, lidocaine, or procainamide, followed by an infusion of the successful drug ...
... decompensation can be treated medically to achieve acute termination by the intravenous administration of amiodarone, lidocaine, or procainamide, followed by an infusion of the successful drug ...
Pulmonary and Systemic Circulations
... • Adjacent endothelial cells tightly joined together. – Intercellular channels that permit passage of molecules (other than proteins) between capillary blood and tissue fluid. » Muscle, lungs, and adipose tissue. ...
... • Adjacent endothelial cells tightly joined together. – Intercellular channels that permit passage of molecules (other than proteins) between capillary blood and tissue fluid. » Muscle, lungs, and adipose tissue. ...
The Heart - Cloudfront.net
... Vein that carries deoxygenated blood from upper body to the Right Atrium. Such as arms, neck, and head. ...
... Vein that carries deoxygenated blood from upper body to the Right Atrium. Such as arms, neck, and head. ...
SPM 100 Clinical Skills Lab 5 Pulse Oximetry and Cardiac Monitoring
... Monitor power Monitor gain Change leads ...
... Monitor power Monitor gain Change leads ...
Cardiovascular System
... Blood vessels ◦ Arteries = vessels that carry blood away from the heart ◦ Veins = vessels that carry blood to the heart ◦ Capillaries = very small blood vessels that distribute blood to all parts of the body ...
... Blood vessels ◦ Arteries = vessels that carry blood away from the heart ◦ Veins = vessels that carry blood to the heart ◦ Capillaries = very small blood vessels that distribute blood to all parts of the body ...
Complex rhythmic processes are typical for living organisms
... to a critical dynamical state intrinsic to the heart because of the antagonistically acting systems regulating heart beats. But the mechanism responsible for the complex heart dynamics is still being discussed . The so-called open loop conditions, where parts of the control system are studied in is ...
... to a critical dynamical state intrinsic to the heart because of the antagonistically acting systems regulating heart beats. But the mechanism responsible for the complex heart dynamics is still being discussed . The so-called open loop conditions, where parts of the control system are studied in is ...
Gastrointestinal System Defects
... Turner’s Syndrome • Genetic disorder • Female without usual pair of 2 X chromosomes • Cells are missing all or part of an X chromosome. The condition only occurs in females. Most commonly, the female patient has only one X chromosome. Others may have two X chromosomes, but one of them is incomplete ...
... Turner’s Syndrome • Genetic disorder • Female without usual pair of 2 X chromosomes • Cells are missing all or part of an X chromosome. The condition only occurs in females. Most commonly, the female patient has only one X chromosome. Others may have two X chromosomes, but one of them is incomplete ...
the Note
... Why do we need a Transport System? There is a need to pick up & deliver the supplies & wastes around the body. Why do the following organisms NOT need a circulation system? ...
... Why do we need a Transport System? There is a need to pick up & deliver the supplies & wastes around the body. Why do the following organisms NOT need a circulation system? ...
Unit II – Transport Cardiovascular System
... —All chambers are relaxed. The ventricles fill passively to roughly 70% of their final volume. Blood flows into the relaxed atria but the AV valves remain closed. This is known as the period of isovolumetric relaxation. ...
... —All chambers are relaxed. The ventricles fill passively to roughly 70% of their final volume. Blood flows into the relaxed atria but the AV valves remain closed. This is known as the period of isovolumetric relaxation. ...
Chapter 18 ()
... automatically generate action potentials and conduct cardiac impulse through heart 2. conducting system sinoatrial (SA) node = normal pacemaker of heart located in superior, lateral right atrium ...
... automatically generate action potentials and conduct cardiac impulse through heart 2. conducting system sinoatrial (SA) node = normal pacemaker of heart located in superior, lateral right atrium ...
Chapter 7 - Revsworld
... • Some of the glucose absorbed from the digestive system is used immediately • Most is stored – As glycogen in muscle and the liver – As fat – Converted to fuel for energy later • Insulin helps transport glucose from the blood into cells ...
... • Some of the glucose absorbed from the digestive system is used immediately • Most is stored – As glycogen in muscle and the liver – As fat – Converted to fuel for energy later • Insulin helps transport glucose from the blood into cells ...
Heart Anatomy
... Intercalated discs contain: Desmosomes and Gap Junctions • Many mitochondria • Large T tubes Heart Physiology: Intrinsic Conduction System • Autorhythmic cells: • Initiate action potentials • Have unstable resting potentials called pacemaker potentials • Use calcium influx (rather than sodium) for r ...
... Intercalated discs contain: Desmosomes and Gap Junctions • Many mitochondria • Large T tubes Heart Physiology: Intrinsic Conduction System • Autorhythmic cells: • Initiate action potentials • Have unstable resting potentials called pacemaker potentials • Use calcium influx (rather than sodium) for r ...
The Pumping Heart
... off into the rest of the body. • No other muscle in the human body has the strength and endurance of the heart muscle. • The heart is 1/200 of the bodies weight but requires 1/29 of the body’s blood to function because it has a very high metabolic rate. ...
... off into the rest of the body. • No other muscle in the human body has the strength and endurance of the heart muscle. • The heart is 1/200 of the bodies weight but requires 1/29 of the body’s blood to function because it has a very high metabolic rate. ...
Structure and Function of the Heart
... property of rhythmicity. The cardiac muscle enables improved conductivity due to specialised tracts known as the conducting system of the heart. It propogates through low resistance pathways alongside the intercalcated discs and easily crosses the gap junctions. The benefit of this system is improve ...
... property of rhythmicity. The cardiac muscle enables improved conductivity due to specialised tracts known as the conducting system of the heart. It propogates through low resistance pathways alongside the intercalcated discs and easily crosses the gap junctions. The benefit of this system is improve ...
Cardiac_Cycle
... • The atria and ventricles relax and blood flows into the heart from the veins. • Blood flows into the atria, through the AV valves and into the ventricles. – Atrial diastole - atria relax (0.7s) – Ventricular diastole - ventricles relax (0.5s) ...
... • The atria and ventricles relax and blood flows into the heart from the veins. • Blood flows into the atria, through the AV valves and into the ventricles. – Atrial diastole - atria relax (0.7s) – Ventricular diastole - ventricles relax (0.5s) ...
NOTES - Circulatory
... Cardiopulmonary Resuscitation (CPR) – requires breathing for the victim and forcing the heart to pump blood through the body ONLY WHEN VICTIMS HEART IS STOPPED! Heart Attack (myocardial infarction) – caused by a full or partial blockage of a blood vessel of the heart. Signs: Extreme chest pain, ...
... Cardiopulmonary Resuscitation (CPR) – requires breathing for the victim and forcing the heart to pump blood through the body ONLY WHEN VICTIMS HEART IS STOPPED! Heart Attack (myocardial infarction) – caused by a full or partial blockage of a blood vessel of the heart. Signs: Extreme chest pain, ...
ventricular septal defect (vsd)
... A VSD is the most common type of congenital heart problem. They occur in about 2 in ...
... A VSD is the most common type of congenital heart problem. They occur in about 2 in ...
Myocardial infarction
![](https://commons.wikimedia.org/wiki/Special:FilePath/AMI_scheme.png?width=300)
Myocardial infarction (MI) or acute myocardial infarction (AMI), commonly known as a heart attack, occurs when blood flow stops to a part of the heart causing damage to the heart muscle. The most common symptom is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw. Often it is in the center or left side of the chest and lasts for more than a few minutes. The discomfort may occasionally feel like heartburn. Other symptoms may include shortness of breath, nausea, feeling faint, a cold sweat, or feeling tired. About 30% of people have atypical symptoms, with women more likely than men to present atypically. Among those over 75 years old, about 5% have had an MI with little or no history of symptoms. An MI may cause heart failure, an irregular heartbeat, or cardiac arrest.Most MIs occur due to coronary artery disease. Risk factors include high blood pressure, smoking, diabetes, lack of exercise, obesity, high blood cholesterol, poor diet, and excessive alcohol intake, among others. The mechanism of an MI often involves the rupture of an atherosclerotic plaque, leading to complete blockage of a coronary artery. MIs are less commonly caused by coronary artery spasms, which may be due to cocaine, significant emotional stress, and extreme cold, among others. A number of tests are useful to help with diagnosis, including electrocardiograms (ECGs), blood tests, and coronary angiography. An ECG may confirm an ST elevation MI if ST elevation is present. Commonly used blood tests include troponin and less often creatine kinase MB.Aspirin is an appropriate immediate treatment for a suspected MI. Nitroglycerin or opioids may be used to help with chest pain; however, they do not improve overall outcomes. Supplemental oxygen should be used in those with low oxygen levels or shortness of breath. In ST elevation MIs treatments which attempt to restore blood flow to the heart are typically recommended and include angioplasty, where the arteries are pushed open, or thrombolysis, where the blockage is removed using medications. People who have a non-ST elevation myocardial infarction (NSTEMI) are often managed with the blood thinner heparin, with the additional use angioplasty in those at high risk. In people with blockages of multiple coronary arteries and diabetes, bypass surgery (CABG) may be recommended rather than angioplasty. After an MI, lifestyle modifications, along with long term treatment with aspirin, beta blockers, and statins, are typically recommended.Worldwide, more than 3 million people have ST elevation MIs and 4 million have NSTEMIs each year. STEMIs occur about twice as often in men as women. About one million people have an MI each year in the United States. In the developed world the risk of death in those who have had an STEMI is about 10%. Rates of MI for a given age have decreased globally between 1990 and 2010.