Circulatory System: Question Preview (ID: 15330)

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How does the circulatory system avoid blood reflux?
a) by keeping blood in the heart longer b) by making blood pass throug the lungs in first place c) by placing valves along the veins and in the heart d) by usingthe lynphatic system to add preassure to the blood
What happens when you don´t include enough iron in your diet?
a) you feel excited and nervous b) you have slow digestions c) you feel tired and maybe dizzy d) your blood changes colour
If you have suffered a heart attack you have to avoid..
a) eating too much sweets, because it makes you fat and blood will have to travel longer b) drinking lots of water, because it makes your blood more diluted c) eating fatty food, because many fats may clot your arteries d) drinking lots of milk, because calcium sticks to your blood vessels
Why does the heart have a big wall between both sides?
a) so blood never goes back b) to avoid blood circulation around the body before gas exchange is done c) to make blood flow stronger d) because there is special and general circulation
The reason why your heart sometimes beats very quickly is...
a) you have to sweat a lot because it is very hot b) your brain tells your body cells to get ready for an emergency situation c) you ate so much fatty food your kidneys need to work at full speed d) you didn´t eat enough and you have a lack of energy
Blood vessels which allow exchange with cells are
a) arteries b) veins c) all vessels d) capillaries
exchange of gasses is done due to
a) pulmonary veins b) pulmonary arteries c) lung capillaries d) alveoly and capillaries
If you bleed after a cut, it will clot thanks to...
a) red blood cells b) white blood cells c) platelets d) antibodies
blood collects most of the cell wastes in
a) arteries b) veins c) capillaries d) lynphatic vessels
In the laboratory, how do you recognise in the heart which are veins and arteries?
a) comparing their width b) looking for semilunar valves only ateries have c) introducing the finger to see if they reach atriums or ventricles d) all the above are true
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