Gases- Oxygen, hydrogen, carbon monoxide, nitrogen
Which of the following is covered in the usage and mechanics section of the ACT English test?
A.
Punctuation
The answer is: the <span>epiglottis .
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If jorge is<span> feeling sluggish and having trouble concentrating in class, he should (option A) go to sleep earlier. So he could have enough amount of time to sleep (between 8 and 9 hours depending on each person), his brain and body would rest properly and he is going to feel better in the morning. If he does this every day and respect his night sleep, he won´t have any of these problems in the future. </span>
Answer: To increase arterial pressure you need to increase the cardiac output
Explanation:
Cardiac output is the volume of blood being pumped by the heart in one minute. It is equal to heart rate multiplied by stroke volume.
Two factors affect the strength of the blood: cardiac output and peripheral resistance. Cardiac output is the volume of blood circulated by the heart. Increasing heart rate also results in increased cardiac output, which increases blood pressure.
