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erickamiles1797
23.01.2020 •
Biology
Are performed to assess the adequacy of the amount of oxygen getting to the heart muscle and thus indicate the presence or absence of heart disease. the top number on a blood pressure reading is ; the bottom number on a blood pressure reading is
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Ответ:
STRESS TEST
SYSTOLE
DIASTOLE
Explanation:
A standard exercise stress test employs an EKG (electrocardiogram) to watch closely any variation in the heart's electrical activity, the heart valves, the activities of the heart muscle, if the heart does not have shortage of blood flow during exercise and to study how heart functions when undergoing physical activity.
Diastole and systole are two levels of the cardiac cycle. They are seen during heart beats function as it pumps blood using a collection of blood vessels that transports blood to each and every singular part of the body. Systole is produced during contraction of the heart to pump blood out, and diastole is produced during relaxation of the heart when it contracts.
Let's consider, 120/80 mm Hg. The up figure stands for the level of pressure in the arteries when the heart muscle contracts --- systolic pressure. The below figure stands for blood pressure as seen when the heart muscle is between beats--- diastolic pressure.
Ответ:
Stress Test
Systole
Diastole
Explanation:
Stress Test is a medical test the determines the heart potentiality to reply to external stress in a controlled observed environment. The stress response can be triggered or evoked by exercise. Stress Tests are performed to assess the adequacy of the amount of oxygen getting to the heart muscle and thus indicate the presence or absence of heart disease. During this test, a device known as Electrocardiogram (ECG) is used to measure and record the electrical activity of the heart.
The top number on a blood pressure reading is Systole because during this period, it is a period of contraction, therefore the heart muscles are contracting thereby ejecting blood into the aorta and pulmonary trunk.
The bottom number on a blood pressure reading is Diastole because it is a period of relaxation of the heart muscle. Here, three coronary arteries surrounds the heart whereby the heart receives blood. When these arteries are clear, amount of blood moving into the heart muscle is supplied in adequate proportion. The heart muscles receives little blood and oxygen during low blood pressure level. This is caused by some certain event (e.g exercise) where the heart beats faster and as the heart beats faster, the heart rate drops in level and started to increase and the diastolic pressure decreases. This is what results to little amount of blood and oxygen that is received by the heart muscles as being said earlier.
Ответ:
Step-by-step explanation:
the 2nd line can be rewritten as y < x-3
So, any value that is less than both 4x+4 and x-3 will work
Pick any value you want for x, and figure y possibilities
x=0; x-3=-3, 4x+4=4, so y<-3 ... (0,-5) will work
I'm sure you can now come up with other pairs.