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A-Level PE Anatomy And Physiology > Problems And Solutions Of VR > Flashcards

Flashcards in Problems And Solutions Of VR Deck (8)
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1

Why is an active recovery important

At the end of exercise the blood pools in the legs which causes a feeling of dizziness

2

What is the first problem with VR

The blood pressure in the veins that return blood back to the heart is 0

3

What is the second problem with VR

Most of SV is in the legs so has-to work against gravity to return to the heart

4

What is the first solution for VR

There are pocket valves in the larger veins to prevent the back flow of blood

5

What is the second solution of VR

The skeletal muscle pump. When skeletal muscles contract they widen and press against vein walls with pushes blood up towards the heart from the legs

6

What is the third solution of VR

Smooth muscle. In the vein walls there are some smooth muscle which allows for some vasoconstriction which helps move blood up towards the heart

7

What is the fourth solution of VR

Respiratory pump. During inspiration, diaphragm flattens, decreasing volume and increasing pressure in abdomen to below pressure in the thoracic cavity. This pressure differential pulls blood up towards the heart

8

What the fifth solution to VR

Gravity from above the heart. Gravity aids blood returning to the heart from above the heart

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