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vova2212 [387]
2 years ago
8

differentiate between arteries and veins what is the importance of capillaries in the circulatory system.​

Biology
1 answer:
anygoal [31]2 years ago
4 0

Answer:

<h3>Arteries-</h3>

1.Involved in carrying pure, oxygenated blood and nutrient-rich blood.

2.Consists of three distinct layers, which are rigid, thicker and highly muscular.

3.Located deep within the body.

4.Red in colour.

5.Carry blood away from the heart to various parts of the body.

6.High pressure, as the blood flows by the pumping pressure of the heart.

7.Comparatively higher oxygen level.

8.The level of carbon dioxide is low

9.Lumina is narrow

10.Valves are absent

11.Arteries are at a greater risk of certain diseases like angina pectoris, atherosclerosis, etc.

<h3>Veins-</h3>

1.Involved in carrying impure, deoxygenated blood

2.Consists of three distinct layers, which are thin and collapsible.

3.Peripherally located closer to the skin.

4.Blue in colour.

5.Carry blood towards the heart from the various parts of the body.

6.Low pressure, as the blood flows by the capillary action of the veins.

7.Comparatively low oxygen level.

8.The level of carbon dioxide is high

9.In upward direction from the body tissues to the heart.

10.Lumina is wide & Valves are present.

11.Veins are less susceptible to diseases such as varicose veins.

Though tiny, the capillaries are one of the most important parts of the circulatory system because it's through them that nutrients and oxygen are delivered to the cells. In addition, waste products such as carbon dioxide are also removed by the capillaries.

Explanation:

Hope this helps you

Crown me as brainliest:)

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Question: What effect will adding soap to water have on surface tension?

 

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Independent/Dependent/Control Variables: Independent: the amount of soap/oil; Dependent: the penny; Control: amount of oil/water given

 

Materials: 3 cups, water, canola or olive oil, dish soap, a pipette and or needle/syringe, pennies

 

<span>Procedure:

</span>

<span>·       </span>Gather three identical cups

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<span>·       </span>Lay out three pennies.

<span>·       </span>Take pipette and slowly bring water in from cup #1, drop onto penny until water falls over, record results of how many drops it took.

<span>·       </span>Repeat with cup numbers 2-3 and record information/data.

Data/Observations: With the regular water on a penny, I noticed that only 13 regular drops could fit on without falling over.

<span>With the water+soap, it got up to 24 drops before falling over. Then on the 25th drop, the mixture fell off. </span>

With the oil, it was the highest at 29 drops before falling over slowly. Therefore, oil holds the most surface tension in this experiment.

 


 





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