<span><span><span>Is this a true or false question? If so, the answer would be false.
While Swimming has many benefits, it does not burn the most calories. It provides a full body work out and goes easy on your joints. However, in order to burn a ton of calories, you need to sweat. Running at 7mph for one hour will help you burn about 700 calories, while swimming at 50 yards-per-minute burns about 550 per hour.
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<u>d) observing how the heart contracts to pump blood
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Most likely because of malnutrition and she could be under stress which also stops periods
Answer:
B) physiological
Explanation:
When we feel under pressure, our nervous system instructs the body to release stress hormones, such as adrenaline and cortisol, that produce <u>physiological changes</u> in order to help us cope with the threat or danger we see looming over us. It is what is called "stress response" or "fight or flight" reaction.
When we are stressed, the respiratory system suffers the effect immediately. It usually costs us more to breathe and we do it faster in an attempt to quickly bring oxygen-rich blood to the body.
Cardiovascular effects also occur. When the stress is acute (at that precise moment), the heart rate and blood pressure rise, but return to normal once this has passed. If acute stress is experienced repeatedly or if the stress becomes chronic (if it lasts for a long period of time), it can cause damage to the veins and arteries. <u>This increases the risk of hypertension, heart attacks or heart attacks</u>.
