HISTOLOGY
BLOOD VESSELS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
increasing cardiac output
|
|
|
decreasing vessel diameter
|
|
|
increasing blood vessel length
|
|
|
decreasing blood pressure
|
Detailed explanation-1: -Cardiac output determines the amount of blood to be carried by the blood vessels. In a normal situation, it is approximately 5 L. Any increase in cardiac output will, in turn, increase blood pressure and thus promote blood flow.
Detailed explanation-2: -Generally speaking, your heart beats both faster and stronger to increase cardiac output during exercise. Sufficient cardiac output helps keep blood pressure at the levels needed to supply oxygen-rich blood to your brain and other vital organs.
Detailed explanation-3: -Cardiac output can be increased by a variety of signaling methods including enhancement of sympathetic tone, catecholamine secretion, and circulation of thyroid hormone.
Detailed explanation-4: -Running, biking or walking can help boost circulation-and the same goes for stretching before and after exercising. If you smoke, quit. Smoking can inhibit blood flow, destroy blood vessel walls, and cause plaque to accumulate in the veins.