• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2
3. 3
3
4. 4
4
5. 5
5

Investitigation of Veins and arteries. Research topic: the elasticity of cows vein and aorta hung with different masses.

Extracts from this document...

Introduction

LAVENDER'S PRATICAL REPORT of ELASTICITY OF VEIN AND ARTERY Research topic: the elasticity of cow's vein and aorta hanged with different masses. Hypothesis: the vein and aorta are to main blood vessels in our hearts which are very elastic. Depends on the function of each vessel, they are placed under different pressure. Through the arteries, blood is pumped to the body, while in through the vein, blood comes back to the heart. Hence, the elasticity of them is differentiated. Pumping blood to the whole body means higher pressure so that artery have thicker walls and more elastic than veins. ...read more.

Middle

Use the clip to hang the aorta ring on the stand 3. Measure the length of the aorta ring 4. Add a weight of 100 grams to the aorta ring 5. Measure the length of the aorta ring 6. Repeat step 4 and 5 for 9 times (the maximum mass added is 1000 grams) 7. Repeat all the steps with vena cava 8. Record the result. Raw data collecting Data processing: The length of both vein and artery was increasing very clearly at the beginning duo to the increase of mass added. ...read more.

Conclusion

700.00 68.20 80.75 4.15 6.50 800.00 69.80 82.75 3.11 7.63 900.00 71.00 84.50 3.08 7.72 1000.00 72.00 86.00 2.83 10.39 Quanlitative data: As we can see, the percentage increase in length of both vein and artery is increasing at the beginning but keep constant at the end. This is because the blood vessels have reached their limitations. Compare the two length increase in vein and artery, we can see that the artery increase in length less than the vein. The reason for this is the artery have thicker walls and harder in order to complete its mission as the carrier of blood to the whole body. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Biology section.

Found what you're looking for?

• Start learning 29% faster today
• 150,000+ documents available
• Just £6.99 a month

Not the one? Search for your essay title...
• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month

Related International Baccalaureate Biology essays

1. biology extended essay - How different diets: vegetarian, vegan and a meat centered diet ...

Two to three times a year About twice a year Three to four times a year How many days are you absent from school when you have a cold/year? Once or twice Three to four times Almost all week I still go to school even when i am sick Almost all week How often do you exercise?

2. Heart Recoil IA. Aim To compare the recoil and subsequent elastic limit of ...

to 800g. The table below it is evidence of my calculations for the elastic recoil. For processing the data, I drew 2 graphs. Graph one represents the elastic recoil percentage of the aorta and the vena cava as the mass increases.

1. Independent Research Project Vital Lung Capacity

After completing the recorded breath, read the dial of the spirometer and write down the data (in units of ml). Repeat these steps for a total of 3 to 4 trials. Data Collection and Processing Table 1: A representation of the results of the vital capacity amongst participants not afflicted with asthma.

2. Research Project . Should Research Into Biological Warfare Continue?

small doses both to treat painful muscle spasms, and as a cosmetic treatment in some parts of the world. It is sold commercially under the brand names Botox, Dysport, and Myobloc for this purpose. Botulin is found in three main forms, foodbourne, airbourne, and waterbourne.

1. What is the effect of different body positions i.e. lying down, sitting and standing ...

* The arm position- the wrist was in line with the heart * Room temperature (SLC) * Height of the chair in which participant sat on * Same blood pressure monitor was used for all participants Materials: * 1 x JADCO Time Stopwatch (�0.05 seconds)

2. LAB-What infuences blood pressure

Although in case of each factor it is impossible to determine the amount required to cause a disease or just problems. In most cases there are so many disease causing factors mixed that the amount can not be determined. Taking the young group of people has many motives.

1. Activated sludge wastewater treatment system and method

In conventional activated sludge wastewater treatment systems, the concentration of activated sludge solids is typically 2,000 to 5,000 milligrams per liter in the aeration tank. The aerobic reaction which takes place in the aeration tank includes three types of phenomena--absorption, adsorption, and biological digestion.

2. Genetic engineering has been a controversial topic

Gene therapy is a highly promising treatment option, and right now the only thing that is holding it back is the fact that it still has its risks which are yet to be discovered. It?s technique raised controversy from some religious groups and creationists, as they believe that gene therapy

• Over 160,000 pieces
of student written work
• Annotated by
experienced teachers
• Ideas and feedback to