I would love to help answer, but i think i need a little more context here.
Cardiovascular system is gradually revved up during a warmup by increasing body temperature and boosting blood flow to the muscles.
<h3>What about cardiovascular system?</h3>
- Warming up may also assist lower injury risk and muscular discomfort.
- After working out, it should cool down to allow your heart rate and blood pressure to gradually return to normal.
- To obtain oxygen into the blood, the circulatory system (cardiovascular system) pumps blood from the heart to the lungs.
- The heart pumps oxygenated blood through the arteries to the rest of the body.
- Veins bring oxygen-depleted blood back to the heart to restart circulation.
- Humans and other vertebrates have a closed circulatory system called the cardiovascular system.
- Blood, blood arteries, and the heart are its constituent parts.
- The atrium (plural atria) and the ventricle are two of the heart's chambers.
- Human hearts have two atria and two ventricles, making a total of four chambers.
Learn more about cardiovascular system here:
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Is has to be d because all the other ones sound wrong
<span>The ovaries produce the female egg cells, called the ova or oocytes. The oocytes are then transported to the fallopian tube where fertilization by a sperm may occur. The fertilized egg then moves to the uterus, where the uterine lining has thickened in response to the normal hormones of the reproductive cycle. Hope this helps.</span>
