A heart attack happens when the blood vessels that supply blood to your heart are blocked. This can damage your heart or lead to an abnormal heart rhythm or heart failure. A heart attack is also called a myocardial infarction.What are the signs and symptoms of a heart attack?
The difference between systolic and diastolic blood pressure is that systolic refers to the highest pressure when the heart contracts and pumps blood, while diastolic represents the lowest pressure when the heart relaxes between beats. When you measure your blood pressure, you’ll see two numbers, ...
Feeling lightheaded when you stand up Purple color around your mouth and nails Confusion or anxiety Chest pain at night Periods of no breathing, then breathing fast Lack of energy (often worsened by physical activity), or trouble sleeping Swelling in your ankles, legs, or abdomen Heartbeat that...
Lies make most people feel bad. Your heart beats fast. A part of your brain wakes up. It usually turns on when the person is scared or plans to run away. Lies are bad for health, so don’t tell lies. People tell more lies than they think, a report (报告) by US scientists finds...
When a person feels scared, his eyes are openHis heart beats fastFeet become warmWhat should we do when we feel scared?We should take a deep breathIt We should close our eyes.We should run and hide.What is the main(主要的) idea of this passage?
Like the rest of your body, your brain needs oxygen to survive and thrive. It gets that oxygen from the blood flowing from your heart through a network of arteries. Astrokehappens when the blood supply to the brain slows to a trickle or gets cut off completely. Your brain cells become ...
When a person feels scared, his eyes are openHis heart beats fastFeet become warmWhat should we do when we feel scared?We should take a deep breathIt We should close our eyes.We should run and hide.What is the main(主要的) idea of this passage?
Or, to paraphrase the Celine Dion song, will your heart go on? RELATED MYSTERIES —How many hearts does an octopus have? —Do other animals get heart attacks? —What happens when a baby takes its first breath? Factors such as age, genetics, injury and disease can gra...
The Beats Fit Pro True Wireless is an earbud that has what the company calls “flexible, secure-fit wingtips” that hold the earbuds in your ear more securely. These are great for when you’re moving around a lot, and are ideal for runners and serious exercisers. With up to 6 hours ...
When we exercise, what happens to our heart? A. Beats slower. B. Stops beating. C. Beats faster. D. Beats irregularly. 相关知识点: 试题来源: 解析 C。原因:文中提到 When we exercise, our heart beats faster and our blood circulates better....