AP BIOLOGY

ANIMAL PHYSIOLOGY

HUMAN CIRCULATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If there is a sudden drop in blood pressure, what happens to the heart rate?
A
Increases
B
Decrease
C
Returns to Normal
D
Stays the same
Explanation: 

Detailed explanation-1: -When your blood pressure drops, your heart rate increases and the blood vessels in other parts of the body constrict (narrow) to help maintain blood pressure.

Detailed explanation-2: -Sudden severe drops in your blood pressure starves your body of oxygen. This can lead to damage of the heart, brain, and other organs. This type of low blood pressure can be life threatening if not treated right away.

Detailed explanation-3: -Low blood pressure with a high heart rate is common and can be caused by various factors. These include vasovagal syncope, atrial fibrillation, weakening of heart muscles, and certain medications, among others. If you think that your symptoms may be due to low blood pressure with a high heart rate, see your doctor.

Detailed explanation-4: -Having low blood pressure can sometimes lead to a higher pulse. If your blood pressure is low, your heart may have to work extra hard to deliver enough oxygen-rich blood to the organs, resulting in a high pulse. Low blood pressure with a high pulse could indicate an underlying medical condition or lifestyle factor.

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