Rank #6879 on CommentsLevel 236 Comments: Ambassador Of Lulz
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|Last status update:|| |
|Date Signed Up:||8/10/2012|
|FunnyJunk Career Stats|
|Highest Content Rank:||#3692|
|Highest Comment Rank:||#2258|
|Content Thumbs:||134 total, 158 , 24|
|Comment Thumbs:||4491 total, 5079 , 588|
|Content Level Progress:|| 0% (0/5) |
Level 9 Content: New Here → Level 10 Content: New Here
|Comment Level Progress:|| 45% (45/100) |
Level 236 Comments: Ambassador Of Lulz → Level 237 Comments: Ambassador Of Lulz
|Times Content Favorited:||14 times|
|Total Comments Made:||882|
|Favorite Tags:||arachnid (2) | spider (2) | tarantula (2)|
Student, Spider keeper and firearm enthusiast. Also I drive large trucks with big engines for a living at the moment.
latest user's comments
|#9 - sweet, look at all this **** i'll never be able to afford||08/21/2016 on Interior design||0|
|#3 - apparently I was born before the time that OP knew that croppi…||08/12/2016 on /B/tard Is A Dindu.||+4|
|#14 - I know muscles need oxygen, especially when being worked; but … [+] (2 new replies)||08/08/2016 on Blood vessels||0|
|#7 - Because of the implication.||08/08/2016 on Always Sunny||+19|
|#8 - Over 70 percent of firefighters in the US are volunteer. Some … [+] (1 new reply)||08/08/2016 on Corrupt Firefighter||+15|
|#10 - I ave a question if there are any biology peeps out there. Loo… [+] (6 new replies)||08/08/2016 on Blood vessels||+6|
#17 - donfailed (08/08/2016) [-]
From what I remember from anatomy, here's a bit about blood. Blood is really fucking efficient. It's got a simple little trick where it has set points on when to release oxygen. It's fully oxygenated in the lungs at a set point below regular atmospheric oxygen levels, giving the organism leeway to live in places with less oxygen in the atmosphere. In the body, which will always have a lower oxygen level than the atmosphere, it reaches areas of muscle with varying oxygen levels and releases oxygen accordingly due to its set points, AKA it releases more oxygen the less oxygenated the surrounding tissue is. Note the gigantic descending aorta going down from the heart and splitting into the huge illiac arteries heading into the legs. What seems to be missing is the equally fucking huge inferior vena cava, AKA the main vein that feeds deoxygenated blood from the lower half of your body back to your heart. Your legs get damn good circulation.
To answer why there's a lot more arteries going around the head, fingertips, and arms? My guess is senses and precision of movement. Specialized tissue, including nerves, eat up a lot of energy. The tips of your fingers are extremely sensitive compared to the back of your hand. Larger muscles, technically, use up less energy than the tiny ones since they do fewer "Slow", large scale contractions. Meanwhile smaller, muscles with more precise movement will be doing many rapid, tiny contractions that can make small adjustments very quickly. Compare it to jogging vs. sprinting. Now, add to it the aforementioned efficiency of blood and bob's your uncle.
TL;DR The parts with more arteries are either doing more stuff or are managing the blood.
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