The Heart - Ms. Mogck`s Classroom
... a. Calculate the cardiac output. Express your answer in liters ...
... a. Calculate the cardiac output. Express your answer in liters ...
Mass Transport and the Blood system
... Factors determining the presence of mass transport The surface area to volume ratio The activity of the organism Obviously, the greater the activity and smaller the ratio, the ...
... Factors determining the presence of mass transport The surface area to volume ratio The activity of the organism Obviously, the greater the activity and smaller the ratio, the ...
The Circulatory System
... that help and control the flow of the blood around the body. This process is called circulation. The main parts of the system are the heart, arteries, capillaries and veins. The average adult heart can beat up to 70 times per minute. If there are 1,440 minutes in a day there would be… ...
... that help and control the flow of the blood around the body. This process is called circulation. The main parts of the system are the heart, arteries, capillaries and veins. The average adult heart can beat up to 70 times per minute. If there are 1,440 minutes in a day there would be… ...
bio310 test2 with answers
... in the smooth muscle of arterioles supplying them B. decreases; increased sympathetic stimulation of alpha-adrenergic receptors in the smooth muscle of arterioles supplying them C. increases; local metabolic control D. decreases; local metabolic control E. does not change; flow autoregulation 20. Wh ...
... in the smooth muscle of arterioles supplying them B. decreases; increased sympathetic stimulation of alpha-adrenergic receptors in the smooth muscle of arterioles supplying them C. increases; local metabolic control D. decreases; local metabolic control E. does not change; flow autoregulation 20. Wh ...
Genefest programmes and links to syllabus
... Inheritance – sickle cell anaemia and thalassemia ...
... Inheritance – sickle cell anaemia and thalassemia ...
2) Pharynx
... • Upper and lower chambers are separated by valves – doors that open and close to prevent and allow blood flow between chambers ...
... • Upper and lower chambers are separated by valves – doors that open and close to prevent and allow blood flow between chambers ...
Ivabradine (Procoralan) for the indication chronic heart failure
... twice daily if the resting heart rate is persistently above 60 beats per minute or reduced to 2.5 mg twice daily if the resting heart rate is persistently below 50 beats per minute. Mechanism of action. Ivabradine works via selective and specific inhibition of the cardiac pacemaker current If that c ...
... twice daily if the resting heart rate is persistently above 60 beats per minute or reduced to 2.5 mg twice daily if the resting heart rate is persistently below 50 beats per minute. Mechanism of action. Ivabradine works via selective and specific inhibition of the cardiac pacemaker current If that c ...
Unit-2-Match-Up - Lesmahagow High School
... Cardiovascular Disease, Diabetes and Obesity 1. Cardiovascular Disease A. Insoluble molecule that platelets adhere to forming a blood ...
... Cardiovascular Disease, Diabetes and Obesity 1. Cardiovascular Disease A. Insoluble molecule that platelets adhere to forming a blood ...
Cardiac Auscultation
... diastole, the heart chambers fill with blood. Ventricular systole causes closure of the mitral and tricuspid valves. Cardiac sounds are named according to the sequence of occurrence and are produced at specific points in the cardiac cycle. The initial heart sound is called the first heart sound or S ...
... diastole, the heart chambers fill with blood. Ventricular systole causes closure of the mitral and tricuspid valves. Cardiac sounds are named according to the sequence of occurrence and are produced at specific points in the cardiac cycle. The initial heart sound is called the first heart sound or S ...
IGCSE Biology Chapter 5 ANSWERS 1. a) Single circulatory system
... c) A capillary has thin walls only one cell thick, to allow rapid diffusion of materials in & out of the blood. Capillaries are extremely narrow, so they can reach virtually all tissue cells. As red blood cells have to squeeze through the capillary they become slightly bell-shaped, which further inc ...
... c) A capillary has thin walls only one cell thick, to allow rapid diffusion of materials in & out of the blood. Capillaries are extremely narrow, so they can reach virtually all tissue cells. As red blood cells have to squeeze through the capillary they become slightly bell-shaped, which further inc ...
Cardiac Output Regulation of Cardiac Output Autonomic nervous
... Pressure remains relatively constant through arteries. ...
... Pressure remains relatively constant through arteries. ...
PDF - US Pharmacist
... by electrical impulses transmitted to the atria, the smaller upper chambers of the heart, and then to the ventricles, the larger, lower chambers of the heart. These electrical impulses result in a heartbeat, which allows the ventricles to pump blood throughout the body. Any time the normal electrica ...
... by electrical impulses transmitted to the atria, the smaller upper chambers of the heart, and then to the ventricles, the larger, lower chambers of the heart. These electrical impulses result in a heartbeat, which allows the ventricles to pump blood throughout the body. Any time the normal electrica ...
the effects of exercise
... changes occur within each body system. These are called the short term or immediate effects of exercise. Changes or adaptations will also occur in each body system if we exercise regularly or train over a period of time e.g. weeks/months. These are called the long term effects of exercise. ...
... changes occur within each body system. These are called the short term or immediate effects of exercise. Changes or adaptations will also occur in each body system if we exercise regularly or train over a period of time e.g. weeks/months. These are called the long term effects of exercise. ...
Circulatory system - Atlanta International School
... Vena Cava-blood vessels transporting deoxynated blood back to the heart Red blood cells carry oxygen but they also transport nutrients and waste products such as carbon dioxide It is made of hemoglobin which is oxygen chemically attaching itself to the blood cell. 2 million red blood cells are made ...
... Vena Cava-blood vessels transporting deoxynated blood back to the heart Red blood cells carry oxygen but they also transport nutrients and waste products such as carbon dioxide It is made of hemoglobin which is oxygen chemically attaching itself to the blood cell. 2 million red blood cells are made ...
Elasticity-based determination of isovolumetric
... elastography (MRE) using the magnitude of the complex signal for deducing morphological information combined with the phase of the complex signal for tension-relaxation measurements. Methods: Thirty-five healthy volunteers and 11 patients with relaxation abnormalities were subjected to transthoracic ...
... elastography (MRE) using the magnitude of the complex signal for deducing morphological information combined with the phase of the complex signal for tension-relaxation measurements. Methods: Thirty-five healthy volunteers and 11 patients with relaxation abnormalities were subjected to transthoracic ...
Cardiovascular Physiology
... B. Calculate the pulse pressure and indicate its clinical significance C. Calculate mean arterial pressure (MAP) V. Conduction System of the Heart A. Identify the following intrinsic structures for the conduction system on heart models. 1. Sinoatrial (SA) node 2. Internodal fibers 3. Atrioventricula ...
... B. Calculate the pulse pressure and indicate its clinical significance C. Calculate mean arterial pressure (MAP) V. Conduction System of the Heart A. Identify the following intrinsic structures for the conduction system on heart models. 1. Sinoatrial (SA) node 2. Internodal fibers 3. Atrioventricula ...
Slide 1
... per minute • AV node fires at 40-50 times per minute • If both nodes are suppressed fibers in ventricles by themselves fire only 20-40 times per minute • Artificial pacemaker needed if pace is too slow • Extra beats forming at other sites are called ectopic pacemakers ...
... per minute • AV node fires at 40-50 times per minute • If both nodes are suppressed fibers in ventricles by themselves fire only 20-40 times per minute • Artificial pacemaker needed if pace is too slow • Extra beats forming at other sites are called ectopic pacemakers ...
Supplemental Content
... infarction, ICD implantation should be considered in the patient with cardiomyopathy if : LVEF is < 35% despite maximal medical therapy at least 40 days following myocardial infarction. Recurrent MI and cardiac rupture are common causes of death during 40 days post MI and not be prevented by ICD ...
... infarction, ICD implantation should be considered in the patient with cardiomyopathy if : LVEF is < 35% despite maximal medical therapy at least 40 days following myocardial infarction. Recurrent MI and cardiac rupture are common causes of death during 40 days post MI and not be prevented by ICD ...
The Cardiovascular System
... ◦ 25 grams 275 BPM (resting) – 400-600 BPM (restrained) ◦ 1000 grams 130 BPM (resting) – 150-350 BPM (restrained) ...
... ◦ 25 grams 275 BPM (resting) – 400-600 BPM (restrained) ◦ 1000 grams 130 BPM (resting) – 150-350 BPM (restrained) ...
Heart failure
... In the heart : Increase myocardial contraction In the peripheral vasculature : Dilatation of both arteries & veins → ↓ afterload & preload. ...
... In the heart : Increase myocardial contraction In the peripheral vasculature : Dilatation of both arteries & veins → ↓ afterload & preload. ...
Tobacco
... Increased heart rate Reduced energy Weakened and narrowed blood vessels Increased cholesterol levels Clogged blood vessels Reduced O2 flow to the heart Greater risk of heart disease or stroke ...
... Increased heart rate Reduced energy Weakened and narrowed blood vessels Increased cholesterol levels Clogged blood vessels Reduced O2 flow to the heart Greater risk of heart disease or stroke ...
ASD-Atrial Septal Defect
... body and lungs. These chambers are called the atria. The two bottom chambers pump blood to the body and lungs. These are called the ventricles. These chambers are separated by walls known as the atrial septum and ventricular septum. Atrial Septal Defect An atrial septal defect (ASD) is a congenital ...
... body and lungs. These chambers are called the atria. The two bottom chambers pump blood to the body and lungs. These are called the ventricles. These chambers are separated by walls known as the atrial septum and ventricular septum. Atrial Septal Defect An atrial septal defect (ASD) is a congenital ...
The Circulatory System
... Main artery called the aorta Aorta divides and branches Many smaller arteries Each region of your body has system of arteries supplying it with fresh, oxygen-rich blood. ...
... Main artery called the aorta Aorta divides and branches Many smaller arteries Each region of your body has system of arteries supplying it with fresh, oxygen-rich blood. ...
Myocardial infarction
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.