安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- Heart - Wikipedia
Cardiac muscle tissue has autorhythmicity, the unique ability to initiate a cardiac action potential at a fixed rate—spreading the impulse rapidly from cell to cell to trigger the contraction of the entire heart
- Heart | Structure, Function, Diagram, Anatomy, Facts | Britannica
heart, organ that serves as a pump to circulate the blood It may be a straight tube, as in spiders and annelid worms, or a somewhat more elaborate structure with one or more receiving chambers (atria) and a main pumping chamber (ventricle), as in mollusks
- Heart disease - Symptoms and causes - Mayo Clinic
Coronary artery disease is a common heart condition that affects the major blood vessels that supply the heart muscle A buildup of fats, cholesterol and other substances in and on the artery walls usually causes coronary artery disease This buildup is called plaque
- American Heart Association | To be a relentless force for a world of . . .
Learn more about the American Heart Association's efforts to reduce death caused by heart disease and stroke Also learn about cardiovascular conditions, ECC and CPR, donating, heart disease information for healthcare professionals, caregivers, and educators and healthy living
- Cardiac | definition of cardiac by Medical dictionary
1 pertaining to the heart 2 pertaining to the ostium cardiacum cardiac arrest sudden and often unexpected stoppage of effective heart action
- Cardiovascular system: Function, organs, conditions, and more
The cardiac cycle consists of two phases: systole (contraction) and diastole (relaxation) Some conditions that can affect the heart include heart attack, stroke, heart failure, and arrhythmia
- About Heart Disease | Heart Disease | CDC
High blood pressure, high blood cholesterol, and smoking are key risk factors 1 out of every 5 deaths in the United States are due to heart disease What is heart disease? The term "heart disease" refers to several types of heart conditions The most common type of heart disease in the United States is coronary artery disease (CAD)
- Division of Cardiology | UCSF Cardiology
Fall 2024 marks the 15 th anniversary of the appointment of Jeffrey Olgin, MD, as chief of the UCSF Division of Cardiology
|
|
|