Takes 50ms for ap to travel from SA to AV
... 3. Ventricular Systole (.3 seconds-contraction)- Ventricles receive action potential/signal & contract closes AV valves, pressure increases forcing semilunars open ventricles begin to relax, pressure drops & semilunars close ...
... 3. Ventricular Systole (.3 seconds-contraction)- Ventricles receive action potential/signal & contract closes AV valves, pressure increases forcing semilunars open ventricles begin to relax, pressure drops & semilunars close ...
The Heart
... • The flaps of tissue (endocardium) that make up the AV valves are connected to the muscular walls of the heart – Chordae tendineae – chords of connective tissue (collagen) that attach to the “ventricle-side” of the AV valves – Papillary muscles – Connect chords to the ventricle wall and maintain ch ...
... • The flaps of tissue (endocardium) that make up the AV valves are connected to the muscular walls of the heart – Chordae tendineae – chords of connective tissue (collagen) that attach to the “ventricle-side” of the AV valves – Papillary muscles – Connect chords to the ventricle wall and maintain ch ...
Angina - Philadelphia College of Osteopathic Medicine
... side of the heart which includes the right atrium and right ventricle. The right coronary artery branches into three main branches: the Sinoatrial(SA) nodal branch, the Right Marginal Branch, and the ...
... side of the heart which includes the right atrium and right ventricle. The right coronary artery branches into three main branches: the Sinoatrial(SA) nodal branch, the Right Marginal Branch, and the ...
Types of Blood Vessels
... • Shape: biconcave disc (like a lifesaver or donut) • How the shape helps the RBC to function: – Increase surface area through which gases diffuse ...
... • Shape: biconcave disc (like a lifesaver or donut) • How the shape helps the RBC to function: – Increase surface area through which gases diffuse ...
Heart Dissection Lab
... Most heart diagrams show the left atrium and ventricle on the right side of the diagram. Imagine the heart in the body of a person facing you. The left side of their heart is on their left, but since you are facing them, it is on your right. 1. Identify the right and left sides of the heart. Look cl ...
... Most heart diagrams show the left atrium and ventricle on the right side of the diagram. Imagine the heart in the body of a person facing you. The left side of their heart is on their left, but since you are facing them, it is on your right. 1. Identify the right and left sides of the heart. Look cl ...
Lecture`22`–`Heart`Anatomy` ` The Heart • muscular pump • circulates
... o electrical signal from SA node o atrial depolarisation o atria contract o once they’ve contracted, they relax again (repolarisation) ventricular systole o electrical signal from AV node o ventricular depolarisation o ventricles contract o AV valves snap shut, preventing backflow (first heart sound ...
... o electrical signal from SA node o atrial depolarisation o atria contract o once they’ve contracted, they relax again (repolarisation) ventricular systole o electrical signal from AV node o ventricular depolarisation o ventricles contract o AV valves snap shut, preventing backflow (first heart sound ...
The Heart
... • Bradycardia: Heart rate less than 60 bpm • Sinus arrhythmia: Heart rate varies 5% during respiratory cycle and up to 30% during deep respiration • Premature atrial contractions: Occasional shortened intervals between one contraction and succeeding, frequently occurs in healthy people ...
... • Bradycardia: Heart rate less than 60 bpm • Sinus arrhythmia: Heart rate varies 5% during respiratory cycle and up to 30% during deep respiration • Premature atrial contractions: Occasional shortened intervals between one contraction and succeeding, frequently occurs in healthy people ...
Development of the Cardiovascular System - Wykłady
... •        Mixing lesions (there are both L-to-R and R-to-L shunts without significant stenosis) – truncus arteriosus, total anomalous pulmonary venous return, hypoplastic left heart syndrome      In each group cyanotic and acyanotic conditions may be present ...
... •        Mixing lesions (there are both L-to-R and R-to-L shunts without significant stenosis) – truncus arteriosus, total anomalous pulmonary venous return, hypoplastic left heart syndrome      In each group cyanotic and acyanotic conditions may be present ...
Print - Circulation
... stated that this association was particularly uncommon. Contrary to this statement, CSD + PS is not rare in the Japanese congenital heart disease population, and constitutes a rather important part of -clinical ToF.' During the last three years, intracardiac repairs have been performed on 279 cases ...
... stated that this association was particularly uncommon. Contrary to this statement, CSD + PS is not rare in the Japanese congenital heart disease population, and constitutes a rather important part of -clinical ToF.' During the last three years, intracardiac repairs have been performed on 279 cases ...
ANATOMY AND PHYSIOLOGY TEST: THE HEART
... ___ 10. What portion of the heart functions as the pacemaker, initiating each heartbeat? A. sinoatrial (SA) node B. atrioventricular (A-V) node C. the neuromuscular junction where the parasympathetic nervous system innervates the heart D. Purkinje fibers E. Bundle of His ___ 11. What does the electr ...
... ___ 10. What portion of the heart functions as the pacemaker, initiating each heartbeat? A. sinoatrial (SA) node B. atrioventricular (A-V) node C. the neuromuscular junction where the parasympathetic nervous system innervates the heart D. Purkinje fibers E. Bundle of His ___ 11. What does the electr ...
Surgical Repair Is the Treatment of Choice for Native Aortic
... Neonatal LV adaptation is limited in patients with critical AS ...
... Neonatal LV adaptation is limited in patients with critical AS ...
Circulatory system
... tricuspid valve because it has three leaflets (cusps). The AV valve on the left side of the heart is called the ...
... tricuspid valve because it has three leaflets (cusps). The AV valve on the left side of the heart is called the ...
The Circulatory System
... Surgery: segments of leg veins are grafted between the aorta and coronary vessels, in order to bypass a blockage. Two to four such bypasses may be performed in a single operation. e.g. three such grafts would be known as a “triple-bypass” operation. ...
... Surgery: segments of leg veins are grafted between the aorta and coronary vessels, in order to bypass a blockage. Two to four such bypasses may be performed in a single operation. e.g. three such grafts would be known as a “triple-bypass” operation. ...
Cardiovascular System
... ventricles contract) over diastolic (pressure in arteries when ventricles are filling up with blood) pressure • 120/80 is normal • Pulse (normal is 60 to 100 beats)-expanding and recoiling of arteries • Many factors influence blood pressure ...
... ventricles contract) over diastolic (pressure in arteries when ventricles are filling up with blood) pressure • 120/80 is normal • Pulse (normal is 60 to 100 beats)-expanding and recoiling of arteries • Many factors influence blood pressure ...
Do Now
... 1) Pressure is low during ventricular diastole, opening the A-V valves (tricuspid/bicuspid) 2) Ventricles fill with blood, atrial systole occurs 3) A-V valves close when ventricular pressure exceeds atrial pressure 1) Papillary muscles pull on chordae tendinae to prevent valves from bulging back int ...
... 1) Pressure is low during ventricular diastole, opening the A-V valves (tricuspid/bicuspid) 2) Ventricles fill with blood, atrial systole occurs 3) A-V valves close when ventricular pressure exceeds atrial pressure 1) Papillary muscles pull on chordae tendinae to prevent valves from bulging back int ...
INDICATIONS The Medtronic CoreValve system is indicated for
... In the event that valve function or sealing is impaired due to excessive calcification or incomplete expansion, a postimplant balloon dilatation of the bioprosthesis may improve valve function and sealing. To ensure patient safety, valve size and patient anatomy must be considered when selecting the ...
... In the event that valve function or sealing is impaired due to excessive calcification or incomplete expansion, a postimplant balloon dilatation of the bioprosthesis may improve valve function and sealing. To ensure patient safety, valve size and patient anatomy must be considered when selecting the ...
The HEART
... • Incompetent valves-allow some blood to flow back into the chamber from which it came • Stenosed Valves- valves that are narrower than normal, slowing blood flow from a heart chamber • Mitral Valve Prolapse- (MVP) when the flaps of the Mitral valve extend back into the left atrium, causing incompet ...
... • Incompetent valves-allow some blood to flow back into the chamber from which it came • Stenosed Valves- valves that are narrower than normal, slowing blood flow from a heart chamber • Mitral Valve Prolapse- (MVP) when the flaps of the Mitral valve extend back into the left atrium, causing incompet ...
Echocardiographic longitudinal systolic displacement indices of right
... TDI derived Peak S wave velocity (S’) , IVCT and Tei index measured in apical 4 chamber view tricuspid and pulmonary annular systolic displacement towards the RV apex in hypoplastic left heart syndrome (HLHS) would be useful to evaluate RV systolic function Peak S wave velocity (S’) RV Tei in ...
... TDI derived Peak S wave velocity (S’) , IVCT and Tei index measured in apical 4 chamber view tricuspid and pulmonary annular systolic displacement towards the RV apex in hypoplastic left heart syndrome (HLHS) would be useful to evaluate RV systolic function Peak S wave velocity (S’) RV Tei in ...
Lecture 11 - Heart_kz
... • Similar to arteries but have thinner and less elastic walls • These transport deoxygenated blood back to the heart. • Smallest veins (venules) collect blood from the capillaries before connecting to larger veins and finally joining the vena cava to return to the heart. ...
... • Similar to arteries but have thinner and less elastic walls • These transport deoxygenated blood back to the heart. • Smallest veins (venules) collect blood from the capillaries before connecting to larger veins and finally joining the vena cava to return to the heart. ...
Cardiovascular Physiology - Mr. Bell`s Anatomy and Physiology
... • Shape: biconcave disc (like a lifesaver or donut) • How the shape helps the RBC to function: – Increase surface area through which gases diffuse ...
... • Shape: biconcave disc (like a lifesaver or donut) • How the shape helps the RBC to function: – Increase surface area through which gases diffuse ...
TYPES OF BLOOD VESSELS
... Shape: biconcave disc (like a lifesaver or donut) How the shape helps the RBC to function: Increase surface area through which gases diffuse ...
... Shape: biconcave disc (like a lifesaver or donut) How the shape helps the RBC to function: Increase surface area through which gases diffuse ...
Chapter 33 - IWS2.collin.edu
... Represents the closing of the AV valves It happens at the beginning of the systole Second heart sound (S2- dup) It represents the closing of the semilunar valves It happens at the end of the systole ...
... Represents the closing of the AV valves It happens at the beginning of the systole Second heart sound (S2- dup) It represents the closing of the semilunar valves It happens at the end of the systole ...
Circulatory System - Heart - Westgate Mennonite Collegiate
... during exercise • Hypertrophy of left ventricle • Maximum heart rate decreases • Increased tendency for valves to function abnormally and arrhythmias to occur • Increased oxygen consumption required to pump same amount of blood ...
... during exercise • Hypertrophy of left ventricle • Maximum heart rate decreases • Increased tendency for valves to function abnormally and arrhythmias to occur • Increased oxygen consumption required to pump same amount of blood ...
Artificial heart valve
An artificial heart valve is a device implanted in the heart of a patient with valvular heart disease. When one of the four heart valves malfunctions, the medical choice may be to replace the natural valve with an artificial valve. This requires open-heart surgery.Valves are integral to the normal physiological functioning of the human heart. Natural heart valves are evolved to forms that perform the functional requirement of inducing unidirectional blood flow through the valve structure from one chamber of the heart to another. Natural heart valves become dysfunctional for a variety of pathological causes. Some pathologies may require complete surgical replacement of the natural heart valve with a heart valve prosthesis.