Basic Cardiology For EMT`s
... Each beat of the heart is actually just muscular contraction in reaction to an electrical impulse created by the heart itself. (Automaticity) The impulse starts at the Sinoatrial (SA) node located in the right atrium and travels through the atria, causing them to contract and squeeze the blood i ...
... Each beat of the heart is actually just muscular contraction in reaction to an electrical impulse created by the heart itself. (Automaticity) The impulse starts at the Sinoatrial (SA) node located in the right atrium and travels through the atria, causing them to contract and squeeze the blood i ...
Heart PowerPoint
... – Sinoatrial node- R atrial wall – Atrioventricular node- inferior portion of interatrial septum – Bundle of His- superior part of interventricular septum – R and L branches- bundle of His splits – Purkinje fibers – long strands of cells from inferior interventricular septum to apex, then up ventric ...
... – Sinoatrial node- R atrial wall – Atrioventricular node- inferior portion of interatrial septum – Bundle of His- superior part of interventricular septum – R and L branches- bundle of His splits – Purkinje fibers – long strands of cells from inferior interventricular septum to apex, then up ventric ...
Circulation!! - nslc.wustl.edu
... • Lub: the closing of the AV Valve – This happens just after the ventricles start contracting. (Contraction increases the pressure in the ventricle above the pressure in the atria, causing the valves to close.) ...
... • Lub: the closing of the AV Valve – This happens just after the ventricles start contracting. (Contraction increases the pressure in the ventricle above the pressure in the atria, causing the valves to close.) ...
Oral Presentation 3 - Research
... Hypoplastic Left Heart Syndrome (HLHS) is a condition in which the patient is missing his/her left ventricle 1440 babies are born each year with HLHS Approximately 75% 3-year survival rate No medical treatment for HLHS Only options are operation (reconstruction) or transplantation 300 patients with ...
... Hypoplastic Left Heart Syndrome (HLHS) is a condition in which the patient is missing his/her left ventricle 1440 babies are born each year with HLHS Approximately 75% 3-year survival rate No medical treatment for HLHS Only options are operation (reconstruction) or transplantation 300 patients with ...
Tissues in the lungs
... The heart sits slightly off-centre to the left of the chest cavity, with the atria in the middle of the cavity. The lower, main part of the heart is the firm muscle of the ventricles. Above the ventricles are two thin-walled atria. Coronary arteries lie over the surface of the heart, carrying oxygen ...
... The heart sits slightly off-centre to the left of the chest cavity, with the atria in the middle of the cavity. The lower, main part of the heart is the firm muscle of the ventricles. Above the ventricles are two thin-walled atria. Coronary arteries lie over the surface of the heart, carrying oxygen ...
Blood pressure - Cedar Crest College
... • ‘Lub-dub’ heart sounds during the cycle result from the valves closing. • Valve problems are diagnosed as heart murmurs. ...
... • ‘Lub-dub’ heart sounds during the cycle result from the valves closing. • Valve problems are diagnosed as heart murmurs. ...
Dyspnoea after pneumonectomy
... preferential flow possible from the vena cava inferior through the patent foramen ovale into the left atrium, even in the absence of a pressure gradient. Regarding the observations during operation, this mechanism could have played a role in our patient. However, reviewing the pressure relations bet ...
... preferential flow possible from the vena cava inferior through the patent foramen ovale into the left atrium, even in the absence of a pressure gradient. Regarding the observations during operation, this mechanism could have played a role in our patient. However, reviewing the pressure relations bet ...
The Heart and Circulation Review
... 5. In the diagram below, color the oxygenated blood RED, and the deoxygenated blood BLUE. Be sure to label the three types of blood vessels: artery, vein, and capillary. Also, label the four chambers of the heart! ...
... 5. In the diagram below, color the oxygenated blood RED, and the deoxygenated blood BLUE. Be sure to label the three types of blood vessels: artery, vein, and capillary. Also, label the four chambers of the heart! ...
Pig Heart Dissection
... Using your scissors, continue to cut open the heart. Start a cut on the outside of the left atrium downward into the left ventricle cutting toward the apex to the septum at the center groove. Push open the heart at this cut with your fingers & rinse out any dried blood with water. Examine the left a ...
... Using your scissors, continue to cut open the heart. Start a cut on the outside of the left atrium downward into the left ventricle cutting toward the apex to the septum at the center groove. Push open the heart at this cut with your fingers & rinse out any dried blood with water. Examine the left a ...
CVS
... travels out of the lungs via the pulmonary veins, and to the left atrium. From the left atrium, the blood is forced through the …….. valve into the critically important left ventricle. The left ventricle is the major muscular pump that sends the blood out to the body systems. When the left ventricle ...
... travels out of the lungs via the pulmonary veins, and to the left atrium. From the left atrium, the blood is forced through the …….. valve into the critically important left ventricle. The left ventricle is the major muscular pump that sends the blood out to the body systems. When the left ventricle ...
the tip of the heart is
... that can be detected on the body surface. The recording of these currents is called an electrocardiogram ELECTROCARDIOGRAM (EEG) - electrical activity of the conduction system of the heart recorded with an electrocardiograph - there are three types of ECG's (EKG's) 1. Resting 2. Stress 3. Ambulatory ...
... that can be detected on the body surface. The recording of these currents is called an electrocardiogram ELECTROCARDIOGRAM (EEG) - electrical activity of the conduction system of the heart recorded with an electrocardiograph - there are three types of ECG's (EKG's) 1. Resting 2. Stress 3. Ambulatory ...
22. congenital cardiopathies
... ventricle, then is pumped into the lungs where it receives oxygen. Oxygenrich (red) blood returns to the left atrium from the lungs, passes into the left ventricle, and then is pumped out to the body through the aorta. ...
... ventricle, then is pumped into the lungs where it receives oxygen. Oxygenrich (red) blood returns to the left atrium from the lungs, passes into the left ventricle, and then is pumped out to the body through the aorta. ...
What Is A Patent Foramen Ovale?
... The foramen ovale is a small hole located in the atrial septum, used during fetal circulation to pass the oxygenated blood from the placenta directly to the left side circulation. Normally the foramen ovale closes at birth, when the increased blood pressure on the left side of the heart forces the o ...
... The foramen ovale is a small hole located in the atrial septum, used during fetal circulation to pass the oxygenated blood from the placenta directly to the left side circulation. Normally the foramen ovale closes at birth, when the increased blood pressure on the left side of the heart forces the o ...
Lecture 18 Foreign Bodies, Masses, etc.
... – To rule out artifacts, try to visualize the mass at different depths and from two or more views – Right sided masses can be delineated with micro-cavitation injections. – Angiosarcoma seen most often in the RA: is the most common primary tumor Know how to identify a TEE image of a left atrial appe ...
... – To rule out artifacts, try to visualize the mass at different depths and from two or more views – Right sided masses can be delineated with micro-cavitation injections. – Angiosarcoma seen most often in the RA: is the most common primary tumor Know how to identify a TEE image of a left atrial appe ...
Congenital cardiac defect in a pygmy goat (Capra hircus)
... ultrasonographic examination after the therapy, but the sudden death of the goat prevented it. Our hypothesis is that the heart failure already present at the time of the first echocardiogram became worse, causing the death of the animal. We feel that the present case report is interesting because b ...
... ultrasonographic examination after the therapy, but the sudden death of the goat prevented it. Our hypothesis is that the heart failure already present at the time of the first echocardiogram became worse, causing the death of the animal. We feel that the present case report is interesting because b ...
The Cardiac Cycle
... The atria contract and rising atrial pressure pushes blood into the ventricles through the open AV valves This atrial contraction "tops off" the ventricles, adding another 30 % of the total volume of blood to the 70% of the volume that has passively "dripped". The ventricles now contain the maximum ...
... The atria contract and rising atrial pressure pushes blood into the ventricles through the open AV valves This atrial contraction "tops off" the ventricles, adding another 30 % of the total volume of blood to the 70% of the volume that has passively "dripped". The ventricles now contain the maximum ...
PEAK 485 Cardiac Anatomy / Physiology Review I. Anatomy A
... e. Another depolarization must wait during a refractory period, thus preventing tetany and early contractions (ensures time to fill chambers). 2. Autorhythmic regions of the heart a. Sino atrial node (SA node) in right atrial wall near opening of superior vena cava. AP per min: 70-80. This is the pa ...
... e. Another depolarization must wait during a refractory period, thus preventing tetany and early contractions (ensures time to fill chambers). 2. Autorhythmic regions of the heart a. Sino atrial node (SA node) in right atrial wall near opening of superior vena cava. AP per min: 70-80. This is the pa ...
circulation - WordPress.com
... every part of the body except the lungs. The heart pumps oxygenated blood to the body and deoxygenated blood to the lungs. In the human heart there is one atrium and one ventricle for each circulation, and with both a systemic and a pulmonary circulation there are four chambers in total: left atrium ...
... every part of the body except the lungs. The heart pumps oxygenated blood to the body and deoxygenated blood to the lungs. In the human heart there is one atrium and one ventricle for each circulation, and with both a systemic and a pulmonary circulation there are four chambers in total: left atrium ...
Pathophysiology and Therapy for Atrial Septal Defects
... right bundle branch block, RA enlargement, and normal or right axis deviation (Figure 2). This is a result of increased volume on the right side of the heart. Patients with ostium primum–type defects classically have first-degree atrioventricular (AV) block, incomplete right bundle branch block, and ...
... right bundle branch block, RA enlargement, and normal or right axis deviation (Figure 2). This is a result of increased volume on the right side of the heart. Patients with ostium primum–type defects classically have first-degree atrioventricular (AV) block, incomplete right bundle branch block, and ...
Science: Grade 8
... Internal structure of the heart 1. Using a scalpel, make an incision on the side so that the heart is sliced into halves. However, DO NOT completely separate the two parts. 2. Look at the dissected heart on your tray. Use your finger or a probe to identify the blood pathways. Observe and feel the si ...
... Internal structure of the heart 1. Using a scalpel, make an incision on the side so that the heart is sliced into halves. However, DO NOT completely separate the two parts. 2. Look at the dissected heart on your tray. Use your finger or a probe to identify the blood pathways. Observe and feel the si ...
File
... from the head to the right atrium. a) Aorta b) Nervous Veins c) Deoxy receptor and transferal vessel d) Superior vena cava 7. Contraction of the right ventricle forces blood into the: a) Right atrium b) Pulmonary arteries c) Pulmonary veins d) Septum 8. Which is the correct order of blood flow throu ...
... from the head to the right atrium. a) Aorta b) Nervous Veins c) Deoxy receptor and transferal vessel d) Superior vena cava 7. Contraction of the right ventricle forces blood into the: a) Right atrium b) Pulmonary arteries c) Pulmonary veins d) Septum 8. Which is the correct order of blood flow throu ...
Mitral
... ○ Auricles (ear-like) pouch-like extensions tip of left ventricle forms the apex Sulci: grooves where coronary blood vessels & ...
... ○ Auricles (ear-like) pouch-like extensions tip of left ventricle forms the apex Sulci: grooves where coronary blood vessels & ...
File
... epicardium (aka visceral pericardium)– the outermost layer – usually has fat deposits along the surface myocardium – thick cardiac muscle – large blood supply, large nerve supply endocardium – elastic and collagen fibers ...
... epicardium (aka visceral pericardium)– the outermost layer – usually has fat deposits along the surface myocardium – thick cardiac muscle – large blood supply, large nerve supply endocardium – elastic and collagen fibers ...
A2.2.1HowManyChambers
... 1. In most of the body the arteries carry oxygenated blood and the veins carry unoxygenated blood. The exception to this pattern is the heart. Explain how and why specific arteries and veins of the heart are different from the pattern seen in the rest of the body. 2. Describe and explain the mechani ...
... 1. In most of the body the arteries carry oxygenated blood and the veins carry unoxygenated blood. The exception to this pattern is the heart. Explain how and why specific arteries and veins of the heart are different from the pattern seen in the rest of the body. 2. Describe and explain the mechani ...
Atrial septal defect
Atrial septal defect (ASD) is a congenital heart defect in which blood flows between the atria (upper chambers) of the heart. Normally, the atria are separated by a dividing wall, the interatrial septum. If this septum is defective or absent, then oxygen-rich blood can flow directly from the left side of the heart to mix with the oxygen-poor blood in the right side of the heart, or vice versa. This can lead to lower-than-normal oxygen levels in the arterial blood that supplies the brain, organs, and tissues. However, an ASD may not produce noticeable signs or symptoms, especially if the defect is small.A ""shunt"" is the presence of a net flow of blood through the defect, either from left to right or right to left. The amount of shunting present, if any, determines the hemodynamic significance of the ASD. A ""right-to-left-shunt"" typically poses the more dangerous scenario.During development of the fetus, the interatrial septum develops to separate the left and right atria. However, a hole in the septum called the foramen ovale, allows blood from the right atrium to enter the left atrium during fetal development. This opening allows blood to bypass the nonfunctional fetal lungs while the fetus obtains its oxygen from the placenta. A layer of tissue called the septum primum acts as a valve over the foramen ovale during fetal development. After birth, the pressure in the right side of the heart drops as the lungs open and begin working, causing the foramen ovale to close entirely. In approximately 25% of adults, the foramen ovale does not entirely seal. In these cases, any elevation of the pressure in the pulmonary circulatory system (due to pulmonary hypertension, temporarily while coughing, etc.) can cause the foramen ovale to remain open. This is known as a patent foramen ovale (PFO), which is a type of atrial septal defect.