CARDIOVASCULAR SYSTEM Cardiovascular system HeartBlood vessels.
Cardiovascular System
description
Transcript of Cardiovascular System
• Red blood cells removed and stored• Reinjected a few days before an athletic
event• Shown to improve endurance events
(more oxygen to body)• Dangerous practice as heart load
increased (thicker blood)
Artherosclerosis
• One or more bypass grafts are implanted between the aorta and the coronary blood vessel
• Saphenous veins (from the leg) or arteries (like the IMA = internal mammary artery) are commonly used as grafts
• Tetralogy of Fallot- four different heart defects:– Ventricular septal
defect (VSD)- hole between ventricles of the heart.
– Pulmonary Stenosis- narrowing at or just below the pulmonary valve
– Aorta positioned over the ventricular septal defect instead of in the left ventricle
– Right ventricle is more muscular than normal
Former Student
• Ductus arteriosus- temporary vessel between aorta and pulmonary trunk
• Normally closes shortly after birth
• Remains open increasing pressure and overworks both ventricles
• Interatrial- between atria
• Interventricular- between ventricles
• Heart block: beat “blocked”- different degrees–Diminished blood flow
• Flutter- Rapid atrial contractions followed by AV block
• Tachycardia- rapid heart rate (over 100)• Brachycardia- slow heart rate (under 60)
• Fibrillation- asynchronous contraction of atrial (reduces effectiveness 20-30%) or ventricular muscle (very serious)
Varicose Veins