Artery And Veins Lab Report
Investigating arteries and veins
Aim: How far the artery and vein can stretch when different masses are hanged from them.
Hypothesis: I predict that the heavier the mass the more likely it is to stretch the artery and vein further, eventually causing it to break apart. In addition the vein will stretch further than the artery when given the same mass. This is because arteries are much larger, muscular and more elastic than the veins, as they carry high pressure blood. Veins do not transport blood that is under high pressure and so their structure is compatible according to their function. As a result they have a thin outer layer and so they are not as strong.
Independent variable: The different amount of masses which are being …show more content…
As a result, if the blood vessels are being changed then this will not be possible as the accurate mass which enabled it to break apart will not be recorded. In addition, the amount of mass which is being hanged from each blood vessel must also be kept the same in order to be able to compare the results.
Equipment:
Ring of artery and vein: This is required to experiment with as the masses will hang from these individual blood vessels.
Mass carrier: In order to hold the blood vessel so that the 10g masses can hang from it.
20 x 10g masses: This is needed to show how far each blood vessel will stretch when a particular amount of mass is hanged from them.
Hook: The hook is to attach the vessel and to connect it to the clamp stand ensuring that it is held upright.
Clamp stand: This is used as a base to ensure that the vessel is firm and upright so that it does not move, which could possible affect the results.
Metre ruler: The metre ruler is used to measure how far the artery or vein has stretched.
Risk …show more content…
The instructions given should be followed.
Method
1. Ensure that the environment is clean before starting the experiment.
2. Set up the equipment according to the instructions.
3. After setting up the equipment place a ring of artery from a hook on a clamp stand.
4. Attach a 10g mass and record the length of the ring after the mass has been added using a metre ruler.
5. Remove the mass and record the length of the ring.
6. Repeat step 4 by attaching addition 10g masses till it has reached 200g.
Results:
Artery:
Vein
In conclusion to this experiment the hypothesis has proven to be accurate as the results evidently show that the blood vessels have stretched in accordance to the highest value of mass. As the 10g mass was added each time to both the vessels they increase to a small extent. The vein stretched the furthest as it is much thinner than the artery in general. At 200g the vein was stretched to 5.6cm whereas the artery was at 4.7cm. However it could be argued that the vein was originally a longer length than the artery as it was 3.5 cm at 0g whereas the artery was at 2.5cm. Therefore, the results may not be valid to an extent as the measurements were not being kept the same. As well as this the investigation may not be regarded as reliable as the vessels were only tested once. As a result the issues during the investigation will not have been corrected.
Aim: How far the artery and vein can stretch when different masses are hanged from them.
Hypothesis: I predict that the heavier the mass the more likely it is to stretch the artery and vein further, eventually causing it to break apart. In addition the vein will stretch further than the artery when given the same mass. This is because arteries are much larger, muscular and more elastic than the veins, as they carry high pressure blood. Veins do not transport blood that is under high pressure and so their structure is compatible according to their function. As a result they have a thin outer layer and so they are not as strong.
Independent variable: The different amount of masses which are being …show more content…
As a result, if the blood vessels are being changed then this will not be possible as the accurate mass which enabled it to break apart will not be recorded. In addition, the amount of mass which is being hanged from each blood vessel must also be kept the same in order to be able to compare the results.
Equipment:
Ring of artery and vein: This is required to experiment with as the masses will hang from these individual blood vessels.
Mass carrier: In order to hold the blood vessel so that the 10g masses can hang from it.
20 x 10g masses: This is needed to show how far each blood vessel will stretch when a particular amount of mass is hanged from them.
Hook: The hook is to attach the vessel and to connect it to the clamp stand ensuring that it is held upright.
Clamp stand: This is used as a base to ensure that the vessel is firm and upright so that it does not move, which could possible affect the results.
Metre ruler: The metre ruler is used to measure how far the artery or vein has stretched.
Risk …show more content…
The instructions given should be followed.
Method
1. Ensure that the environment is clean before starting the experiment.
2. Set up the equipment according to the instructions.
3. After setting up the equipment place a ring of artery from a hook on a clamp stand.
4. Attach a 10g mass and record the length of the ring after the mass has been added using a metre ruler.
5. Remove the mass and record the length of the ring.
6. Repeat step 4 by attaching addition 10g masses till it has reached 200g.
Results:
Artery:
Vein
In conclusion to this experiment the hypothesis has proven to be accurate as the results evidently show that the blood vessels have stretched in accordance to the highest value of mass. As the 10g mass was added each time to both the vessels they increase to a small extent. The vein stretched the furthest as it is much thinner than the artery in general. At 200g the vein was stretched to 5.6cm whereas the artery was at 4.7cm. However it could be argued that the vein was originally a longer length than the artery as it was 3.5 cm at 0g whereas the artery was at 2.5cm. Therefore, the results may not be valid to an extent as the measurements were not being kept the same. As well as this the investigation may not be regarded as reliable as the vessels were only tested once. As a result the issues during the investigation will not have been corrected.