pressure and flow in arteries and veins

Question 1

When can no sound be heard using a sphygmomanometer

Answer 1

When the pressure is above systolic or below diastolic

Question 2

What is the standard blood pressure

Answer 2

120/80mmHg

Question 3

What is the difference in pressure between the pulmonary and systemic circulation

Answer 3

The pulmonary cicruclation has 1/5th of the systemic pressure

Question 4

What is the speed of the vessel related to and therefore which is fastest

Answer 4

The larger the cross-sectional area, the slower the speed - therefore aorta and vena cava are the fastest while capillaries are the slowest due to there being so many capillaries that the area is larger

Question 5

What os orthostatic hypotension

Answer 5

Low blood pressure when lying down on back

Question 6

Describe the skeletal muscle pump

Answer 6

Aids venous return - the veins and venuoles are surrounded by skeletal muscles which contract and squeeze the veins which push blood both down and up the vein but the valves help push it towards the heart