In a normal heart, the rate of atrial contraction is the same as the rate of ventricular contraction. At rest, the frequency of the discharges originating from the SA node is low, and the heart beats at the lower range of normal (60 to 80 beats/minute). During exercise or excitement, ...
【题目】选词填空:ordinary, common, normal,usual, general(1) A ___ heart beats around seventy-six ti mes a minute.(2)We have ___ topics to talk about.(3)As a ___ rule, prices follow demand.(4)My ___ bedtime is nine o'clock.(5)What do ___ people think of modern ar t?
Depending on the physical activity, the pulse can be divided into different types. At physical rest (lying or sitting), the so-called resting pulse or resting heart rate is normally between 60 and 80 beats per minute in healthy adults. The training heart rate is the optimal pulse rate for...
A normal heart rate for adults lies somewhere between 60 and 100 beats per minute (BPM), and varies based on age group and gender. Women's heart rates are about 2-7 BPM faster than men's on average. Generally speaking, you want to keep your resting heart rate as low as possible. On...
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, ...
My heart beats 72 times a minute ___ the normal condition. A. under B. below C. with D. for 扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析 解答一 举报 A 解析看不懂?免费查看同类题视频解析查看解答 特别推荐 热点考点 2022年高考真题试卷汇总 2022年高中期中试卷汇总 2022年高中期末...
Cardiac output is the amount of blood the heart pumps in one minute. It is figured by multiplying the stroke volume and heart rate. The heart rate is the number of beats per minute. The stroke volume relies on contractility, preload, and afterload of the heart. Cardiac output is one of ...
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Today, modern laboratory methods require sometimes minute amounts of blood, and ambulatory devices facilitate the monitoring of a variety of variables, such as activity, body temperature, blood pressure, heart rate, and brain activity, continuously throughout the 24 h. The findings of investigations...
Calculate how long it would take the average heart to circulate 2800ml of blood. How is the cardiac index (CI) calculated? If your heart pumps out 70 mL of blood per beat (stroke volume) and your heart rate is 60 beats per minute, what is the output of your heart in mL per...