Investigating arteries and veins Methodology 1. Suspend a ring of artery from a hook on a clamp stand. 2. Use a metre rule to record the length of the ring once the mass carrier has been attached to the free end of the ring. 3. Attach a 10 g mass and record the length of the ring after the mass is added. 4. Remove the mass and record the length of the ring. 5. Repeat steps 2 and 3 using 20‚ 30‚ 40 and 50 g masses. Record the length with and without the masses each time. When comparing
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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
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Write an essay on the following topic. Compare arteries‚ veins and capillaries in terms of their features and functions. (12 marks) ## Content (maximum 9 marks) |Contents |Differences |Marks | |Features |Arteries have thicker wall to withstand the high blood pressure | | | |Veins have thinner wall.
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“Varicose veins are gnarled‚ enlarged veins. Any vein become varicose‚ but the veins most commonly affected are those in your legs and feet. That’s because standing and walking upright increases the pressure in the veins of your lower body” (Mayo Clinic‚ 2011). “Varicose veins are the result of damaged or improperly working valves in the veins‚ which cause blood to back up and make the vein swell” (Cardio Smart‚ 2012). “Varicose veins are enlarged veins that can be blue‚ red‚ or flesh colored.
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Arteries carry blood away form the heart the extremities and organs. They have typical three layer blood vessel wall structure with a thick tunica media. The walls of arteries are highly compliant due to the elastic fibres present. The wall thickness of the arteries varies in based on the proximity to the heart. The elasticity of arteries allows pressure absorption from the left ventricle of the heart as it pumps blood into the arteries. There are two significant types of arteries‚ elastic and muscular
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Stretch forming is performed on a stretch press‚ in which a piece of sheet metal is securely gripped along its edges by gripping jaws. The gripping jaws are each attached to a carriage that is pulled by pneumatic or hydraulic force to stretch the sheet. The tooling used in this process is a stretch form block‚ called a form die‚ which is a solid contoured piece against which the sheet metal will be pressed. The most common stretch presses are oriented vertically‚ in which the form die rests on a
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21 % of cases whereas early branching of the right renal arteries is present in 15 % of individuals.(38) MIP image showing right renal prehilar bifurcation(arrow) and left renal artery duplication(arrowhead). III) ACCORDING TO ORIGIN In case of multiple arteries supplying the single kidney‚ the artery having largest diameter is considered as the main artery and the rest of the arteries are known as the accessory arteries. These arteries can be divided into two categories according to how they
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used for submission purposes (misspelled): Dialated Veins Sclerptherapy Reticular veins are also referred to as ‘blue veins’ or ‘feeder veins.’ This condition occurs when dilated veins allow the outgoing blood to flow the opposite direction (backward). This increase in the pressure causes the veins to become enlarged. They can also twist and cause green or blue lines beneath the skin‚ which often creates an unsightly marbling effect. Reticular Veins: What You Need to Know The Cause Approximately 80
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FOR IMMEDIATE RELEASE (Melbourne‚ Victoria) Varicose veins plague individuals around the globe. It is estimated that 30 percent of women and ten percent of men have this condition‚ and there are numerous causes. Obesity plays a role in the development of varicose veins‚ and this condition tends to run in families. Individuals who sit or stand for long periods of time are also more prone to developing this condition. Thankfully‚ varicose veins treatments allow men and women to address this problem
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creates the cure for stretch marks is going to be the richest person on the planet. Unfortunately‚ I don’t think it’s going to happen any time in the near future. While technology continues to advance‚ we have yet to find a way to rid ourselves of those rigged looking scars. Now‚ that’s not to say there aren’t effective treatments out there that can reduce the appearance of these unsightly scars‚ but you’d be hard pressed to find an absolute cure. Contrary to popular belief‚ stretch marks are not only
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