In closed circulatory system blood is circulated through closed vessels such as arteries, veins and capillaries.
heart
Arteries
All blood vessels leading from the heart are called arteries or the blood vessels which carry blood from the heart to various body organs are called arteries. All arteries carry oxygenated blood (pure blood) except pulmonary artery, which carries deoxygenated blood.
The wall of the artery consists of three layers, namely tunica interna, tunica media and tunica externa.
 
Artery and Vein

Veins
The vessels which carry blood from various body organs to the heart is known as veins. All veins carry deoxygenated blood (impure blood) except pulmonary vein, which carries oxygenated blood(pure blood)
Difference Between Artery and Vein
Artery
1. Vessels which carry blood from the heart to various body parts
2. Arteries carry oxygenated blood from the heart except pulmonary artery
3. Arteries have thick elastic muscular walls
4. Valves are absent
5. Blood flows under high pressure
Vein
1. Vessels which carry blood from the various body parts to the heart
2. Veins carry deoxygenated blood from the various body parts except pulmonary vein
3. Veins have thin non elastic walls
4. Valves are present to prevent the backward flow of blood
5. Blood flows under low pressure
Extra points:
  • The study of blood vessels is called Angiology
  • Variocse veins are the swollen veins formed by improper valve function

85 Comments

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  1. Helpful and simple to understand. Thank you.

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  2. Lovely diagrams. I've used in my lecture and included your link.

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  3. Doesn't the Aorta (largest artery) have a valve though?

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  4. u r awesome..keep it going

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  5. very helpful 1

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  6. Nice very understandable nd good explanation

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  7. Simple & straight forward ! Excellent work!

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  8. The BEST website.....Thanx a lot..simply OSM..

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  9. useful information,lovely diagrams plzzzzzzzzzzzzzz include differences between animal and plant cell

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  10. Understandable and great image as well! There is a diagram that's differentiate both! Now I get it further! :)

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    Replies
    1. Need physics also please is 10standard now and it is very important for me

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  11. Describe more and about the lumen

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  12. any reason why i cant highlight anything? lol

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  13. Thank u....it helped me in the dissection in college to différentiate between artery and vein.......

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  14. the intermolecular forces is evident within the connection between the veins and arteries onthe molecular scale

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  15. beautiful wonderful awesome this is well explanatory thanks and kudos

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  16. suuuuuuuuuuuuuuuuuuuuuuuuuuuuuuper

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  17. very Simple & easy to understand...goodwork

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  18. Thanks for the info, it's helpful

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  19. nice, helpful to all biology students

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  20. thanks, helped a lot!

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  21. Nice very helpful thank you!! :)

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  22. Thank You. It helped me a lot!!!!!!!!!!!

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  23. Its awesome and easy to understand

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  24. Thank 4 ur ur explanation .made me understand the concept

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  25. Thanks for giving such example and helping everybody to understand the diffrence between arteries and veins.I am grateful of you.

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  26. Thankz 4 dees +1 <3

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  27. wow i needed that, Smiling

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  28. thanks a lot hey, you are the best.

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  29. very, helpful and easy to understand

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  30. thank you for the helpful tips :)

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  31. thank you for all the awesome help that i needed

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  32. Thanks was helpful

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  33. aorta have valve but in heart not in blood vessel i guess.

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  34. it helped a lot

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  35. Nice information...thanks

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  36. Very helpful. understand different between vein vs artery.

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  37. Good information.Easy to understand primarily the difference between artaries and veins

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  38. it really helped me a lot......it saved my time during xamss!!!!!!!
    THANK U VERY MUCH..

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  39. Your death is near29 March 2016 at 07:29

    Thank YOU!!

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  40. thanks and thanks verrrry nice information may God bless u

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  41. Wow REALLY helpful, helped my son Sinmyan with his GCSE!

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  42. Good helped me in exams....very helpful

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  43. very informative and easy to understand even to a layman ...

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  44. Short and simple. Thank you!

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  45. My bio mam told that the arteries have valves and not the veins. Thus this a concrete proof for challenging her

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  46. Thanks for sharing informationin understand language.

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  47. nice and simple

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  48. thank you for the information....very useful and very helpful :)

    channelmfm

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  49. this information is very usefull for me thank u

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  50. really the only site i liked till now.
    its of great use.
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  51. This thing sucks

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  52. Excellent information and nice presentation. Thanks.

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  53. Simple and helpful.. Thank you!

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  54. Very helpful for my students, helped them pass their research task easily

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  55. Hello random hobos

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  56. thank u for information.....it is easy and understandable.

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  57. Its easy to understand. Thank you.

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  58. very helpful. awesome diagram

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  59. Helpful, thank-you for your efforts.

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  60. It is very helpful .. Thankyou ...

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  61. Is blood in pulmonary vein under low pressure? Confusing because it is in the thick walled side

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  62. thnk u ... good information

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  63. Thanks a lot..

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  64. Superb 👌👌👌 I like it it's very easy to understand

    ReplyDelete

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