Cardiovascular system
... The onset is marked by closure of AV- valves and terminated by opening of the SLvalves (0.05 sec). Intraventricular pressure is highest. Rapid and slow ejection period: • After 0.05 sec the SL valves gets opened and the blood is ejected to the respected arteries. This is rapid ejection period (0.15 ...
... The onset is marked by closure of AV- valves and terminated by opening of the SLvalves (0.05 sec). Intraventricular pressure is highest. Rapid and slow ejection period: • After 0.05 sec the SL valves gets opened and the blood is ejected to the respected arteries. This is rapid ejection period (0.15 ...
Angina Pectoris: Review Questions
... medium-sized coronary arteries with increased coronary blood flow to the subendocardium. Nitroglycerin reduces the afterload, reduces preload coronary disease ventricular volume, and increases ventricular compliance. 4. (C) Reducing influx of calcium to the cell. Verapamil hydrochloride, nifedipine, ...
... medium-sized coronary arteries with increased coronary blood flow to the subendocardium. Nitroglycerin reduces the afterload, reduces preload coronary disease ventricular volume, and increases ventricular compliance. 4. (C) Reducing influx of calcium to the cell. Verapamil hydrochloride, nifedipine, ...
Anaesthesia for implantation of assist devices
... Patients needing this hemodynamic support are severly limited in their cardiac function and often have other organ failures. The diminished renal and hepatic functions create additional challenges to the anaesthesiologist. Maintaining an adequate cardiac output and hemodynamic stability during the a ...
... Patients needing this hemodynamic support are severly limited in their cardiac function and often have other organ failures. The diminished renal and hepatic functions create additional challenges to the anaesthesiologist. Maintaining an adequate cardiac output and hemodynamic stability during the a ...
Blood and Circulatory system
... • Areas with a great deal of metabolic activity (leg muscles, for example) have higher densities of capillaries. – If blood is needed elsewhere in the body, the capillary beds in less important areas are shut down. ...
... • Areas with a great deal of metabolic activity (leg muscles, for example) have higher densities of capillaries. – If blood is needed elsewhere in the body, the capillary beds in less important areas are shut down. ...
blood vessels
... leaves the heart from the Right ventricle into the Pulmonary Artery and travels through to the lungs to get oxygen OXYGENATED blood leaves lungs in the Pulmonary Veins, travels back to the heart entering the L. atria. ...
... leaves the heart from the Right ventricle into the Pulmonary Artery and travels through to the lungs to get oxygen OXYGENATED blood leaves lungs in the Pulmonary Veins, travels back to the heart entering the L. atria. ...
HEALTH POWERPOINT
... spasms. During a coronary spasm, the coronary arteries restrict or spasm on and off, reducing blood supply to the heart muscle (ischemia). It can even occur in people without significant coronary artery disease. Each coronary artery supplies blood to a region of heart muscle. The amount of damage to ...
... spasms. During a coronary spasm, the coronary arteries restrict or spasm on and off, reducing blood supply to the heart muscle (ischemia). It can even occur in people without significant coronary artery disease. Each coronary artery supplies blood to a region of heart muscle. The amount of damage to ...
Neuron Structure and Function
... Baroreceptor reflex • Baroreceptors are stretchsensitive mechanoreceptors located in the walls of many major blood vessels • Most important of these are located in the carotid artery and aorta • Baroreceptor reflex regulates MAP ...
... Baroreceptor reflex • Baroreceptors are stretchsensitive mechanoreceptors located in the walls of many major blood vessels • Most important of these are located in the carotid artery and aorta • Baroreceptor reflex regulates MAP ...
Answers to Mastering Concepts Questions
... blood throughout the body. 2. Vertebrates have closed circulatory systems, as do earthworms and mollusks. Most other invertebrates have open circulatory systems. 3. Arteries bring blood away from the heart; veins return blood to the heart. Arterioles are smaller branches of arteries; venules are sma ...
... blood throughout the body. 2. Vertebrates have closed circulatory systems, as do earthworms and mollusks. Most other invertebrates have open circulatory systems. 3. Arteries bring blood away from the heart; veins return blood to the heart. Arterioles are smaller branches of arteries; venules are sma ...
Stroke: an introduction
... • Visual problems (e.g. double vision, loss of visual field) • Dyspraxia (difficulty with complex tasks) • Perceptual problems e.g. neglect • Memory and thinking • Incontinence ...
... • Visual problems (e.g. double vision, loss of visual field) • Dyspraxia (difficulty with complex tasks) • Perceptual problems e.g. neglect • Memory and thinking • Incontinence ...
Circulatory System
... – Atrioventricular valves and surrounding fluid vibrations as valves close at beginning of ventricular systole ...
... – Atrioventricular valves and surrounding fluid vibrations as valves close at beginning of ventricular systole ...
The Heart - Peoria Public Schools
... - chemicals can affect heart rate and stroke volume - epinephrine and norepinephrine from adrenal medulla can increase heart rate and stroke volume - excitement, anxiety, anger an increase cardiac output - depression can decrease cardiac output ...
... - chemicals can affect heart rate and stroke volume - epinephrine and norepinephrine from adrenal medulla can increase heart rate and stroke volume - excitement, anxiety, anger an increase cardiac output - depression can decrease cardiac output ...
Circulatory System
... • .carries oxygen and food to cells in the body • carries carbon dioxide and waste away from cells • aids in coagulation process • assists in defending body against disease ...
... • .carries oxygen and food to cells in the body • carries carbon dioxide and waste away from cells • aids in coagulation process • assists in defending body against disease ...
Anatomy of the Heart
... of fluid separates the two layers of membrane, letting the heart move as it beats, yet still be attached to your body. ...
... of fluid separates the two layers of membrane, letting the heart move as it beats, yet still be attached to your body. ...
Identifying and Treating Patients at High Risk for Heart Failure
... medications to achieve target blood pressure goals.16 The ACC/AHA guidelines state that drugs such as angiotensin-converting enzyme (ACE) inhibitors and β-blockers, which are useful for the treatment of both hypertension and heart failure, are preferred therapies for the at-risk hypertensive patient ...
... medications to achieve target blood pressure goals.16 The ACC/AHA guidelines state that drugs such as angiotensin-converting enzyme (ACE) inhibitors and β-blockers, which are useful for the treatment of both hypertension and heart failure, are preferred therapies for the at-risk hypertensive patient ...
Circulatory system
... there are many different types and all contain a big nucleus. the two main ones are the lymphocytes and the macrophages. macrophages ‘eat’ and digest microorganisms . ...
... there are many different types and all contain a big nucleus. the two main ones are the lymphocytes and the macrophages. macrophages ‘eat’ and digest microorganisms . ...
Hypertrophic Cardiomyopathy Explained - New
... If parts of the clot become dislodged they can travel in the bloodstream and become lodged in smaller vessels. The most common place for them to lodge is at the bottom of the aorta, obstructing blood supply to the back legs. This is usually very painful and the back legs become paralysed and cold to ...
... If parts of the clot become dislodged they can travel in the bloodstream and become lodged in smaller vessels. The most common place for them to lodge is at the bottom of the aorta, obstructing blood supply to the back legs. This is usually very painful and the back legs become paralysed and cold to ...
Heart Disease and Stroke
... Patients with CHF are among the most expensive to treat in the entire health care system. Several studies have found key savings: hospitalizations, surgeries, and ER use are all key drivers of the high costs of CHF, with hospitalizations for a typical CHF patient costing up to $21,868 (in 2010 USD). ...
... Patients with CHF are among the most expensive to treat in the entire health care system. Several studies have found key savings: hospitalizations, surgeries, and ER use are all key drivers of the high costs of CHF, with hospitalizations for a typical CHF patient costing up to $21,868 (in 2010 USD). ...
Packet for the Human Body Virtual Trip
... _____________________ enters the blood from the ____________________ in the _________________. Next, __________________ travels to the __________________ in ___________________________ VEIN. It enters the _________________________________, the ___________________ chamber of the heart. Next stop is t ...
... _____________________ enters the blood from the ____________________ in the _________________. Next, __________________ travels to the __________________ in ___________________________ VEIN. It enters the _________________________________, the ___________________ chamber of the heart. Next stop is t ...
Model of the Cardiovascular System: Pump Control
... The cardiovascular system (CVS) of the human body is a complex system consisting of various types of bloodvessels with a wide range of diameters, 4-chamber heart that serves as the initiator of blood flow, control system consisting of a hormonal and nervous system, which provides auto-regulation. Th ...
... The cardiovascular system (CVS) of the human body is a complex system consisting of various types of bloodvessels with a wide range of diameters, 4-chamber heart that serves as the initiator of blood flow, control system consisting of a hormonal and nervous system, which provides auto-regulation. Th ...
Antihypertensive drug
Antihypertensives are a class of drugs that are used to treat hypertension (high blood pressure). Antihypertensive therapy seeks to prevent the complications of high blood pressure, such as stroke and myocardial infarction. Evidence suggests that reduction of the blood pressure by 5 mmHg can decrease the risk of stroke by 34%, of ischaemic heart disease by 21%, and reduce the likelihood of dementia, heart failure, and mortality from cardiovascular disease. There are many classes of antihypertensives, which lower blood pressure by different means. Among the most important and most widely used drugs are thiazide diuretics, calcium channel blockers, ACE inhibitors, angiotensin II receptor antagonists (ARBs), and beta blockers.Which type of medication to use initially for hypertension has been the subject of several large studies and resulting national guidelines. The fundamental goal of treatment should be the prevention of the important endpoints of hypertension, such as heart attack, stroke and heart failure. Patient age, associated clinical conditions and end-organ damage also play a part in determining dosage and type of medication administered. The several classes of antihypertensives differ in side effect profiles, ability to prevent endpoints, and cost. The choice of more expensive agents, where cheaper ones would be equally effective, may have negative impacts on national healthcare budgets. As of 2009, the best available evidence favors the thiazide diuretics as the first-line treatment of choice for high blood pressure when drugs are necessary. Although clinical evidence shows calcium channel blockers and thiazide-type diuretics are preferred first-line treatments for most people (from both efficacy and cost points of view), an ACE inhibitor is recommended by NICE in the UK for those under 55 years old.