How Mosquitoes Use Six Needles to Suck Your Blood | Deep Look

  • تم نشره في 2016/06/ 7
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    Seen up close, the anatomy of a mosquito bite is terrifying. The most dangerous animal in the world uses six needle-like mouthparts to saw into our skin, tap a blood vessel and sometimes leave a dangerous parting gift.
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    DEEP LOOK is a ultra-HD (4K) short video series created by KQED San Francisco and presented by PBS Digital Studios. Explore big scientific mysteries by going incredibly small.
    Scientists have discovered that the mosquito’s mouth, called a proboscis isn’t just one tiny spear. It’s a sophisticated system of thin needles, each of which pierces the skin, finds blood vessels and makes it easy for mosquitoes to suck blood out of them.
    Male mosquitoes don’t bite us, but when a female mosquito pierces the skin, a flexible lip-like sheath called the labium scrolls up and stays outside as she pushes in six needle-like parts that scientists refer to as stylets.
    Two of these needles, called maxillae, have tiny teeth. The mosquito uses them to saw through the skin. They’re so sharp you can barely feel the mosquito biting you.
    “They’re like drill bits,” said University of California, Davis, biochemist Walter Leal.
    Another set of needles, the mandibles, hold tissues apart while the mosquito works.
    Then the sharp-tipped labrum needle probes under the skin, piercing a vessel and sucking blood from it.
    The sixth needle - called the hypopharynx - drools saliva into us, and delivers chemicals that keep our blood flowing. Mosquito saliva also makes our blood vessels dilate, blocks our immune response and lubricates the proboscis. It causes us to develop itchy welts, and serves as a conduit for dangerous viruses and parasites.
    ---+ Read the entire article on KQED Science:
    ---+ What is the deadliest animal in the world?
    Mosquitoes are the deadliest animals in the world to us humans. The diseases they transmit kill hundreds of thousands of people each year.

    ---+ How many people get malaria each year?
    In 2015, malaria, the deadliest mosquito-borne disease, killed roughly 635,000 people, mostly children under the age of five and pregnant women in sub-Saharan Africa.
    ---+ What diseases do mosquitoes transmit?
    Malaria, dengue, yellow fever, West Nile and Zika are some of the diseases that mosquitoes transmit.
    Dengue fever, transmitted Aedes aegypti mosquitoes, is estimated to make almost 400 million people sick with jabbing joint pain each year.
    Scientists also believe that Aedes aegypti mosquitoes are the main culprit for more than 350 confirmed cases of congenital malformations associated with the Zika virus in the northeastern Brazilian state of Pernambuco. Since last October, an unusually high number of babies have been born there with small heads and a host of health problems like convulsions, suspected of being caused by a Zika virus infection early in their mother’s pregnancy.
    ---+ What diseases can I get from mosquitoes in the United States?
    West Nile virus is the most important of several mosquito-transmitted viruses now native to the U.S., according to the Centers for Disease Control.
    ---+ More Great Deep Look episodes:
    The Bombardier Beetle And Its Crazy Chemical Cannonفيديو.html
    --- See also this new Zika video from PBS Digital Studios:
    Should You Be Worried About Zika? | It's Okay to Be Smartفيديو.html
    ---+ About KQED
    KQED, an NPR and PBS affiliate in San Francisco, CA, serves Northern California and beyond with a public-supported alternative to commercial TV, Radio and web media.
    Funding for Deep Look is provided in part by PBS Digital Studios and the John S. and James L. Knight Foundation. Deep Look is a project of KQED Science, which is also supported by HopeLab, the David B. Gold Foundation, the S. D. Bechtel, Jr. Foundation, the Dirk and Charlene Kabcenell Foundation, the Vadasz Family Foundation, the Gordon and Betty Moore Foundation, the Smart Family Foundation and the members of KQED.
    Video of mosquito labrum probing under mouse skin from:
    Choumet V, Attout T, Chartier L, Khun H, Sautereau J, et al. (2012) Visualizing Non Infectious and Infectious Anopheles gambiae Blood Feedings in Naïve and Saliva-Immunized Mice. PLoS ONE 7(12): e50464. doi:10.1371/journal.pone.0050464 .
    Used under the terms of:
    Animations based on drawing in Choo Y-M, Buss GK, Tan K and Leal WS (2015) Multitasking roles of mosquito labrum in oviposition and blood feeding. Front. Physiol. 6:306. doi: 10.3389/fphys.2015.00306
    Used under the terms of:
    #deeplook #mosquito #mosquitobite
  • علوم وتكنولوجياعلوم وتكنولوجيا

تعليقات • 13 786

  • Lalitpat3 Pat
    Lalitpat3 Pat ساعات قبل

    Shoutout to the person who was bitten constantly.! By a mosquito

  • Emily Universe
    Emily Universe 13 ساعات قبل +1

    youtube: _hey wanna hear how your blood is sucked?_

  • Mr Games
    Mr Games أيام قبل

    هل تعلم الي عندهم

  • Tasso Demo
    Tasso Demo أيام قبل

    Bruh I’ve been bit so many times (I’m talking like 3-4 bites every time I go on vacation) and I don’t get anywhere CLOSE to dying

  • Marwa Ashmar
    Marwa Ashmar أيام قبل

    Actually when my brother killed a mosquito he fineded alot of blood🐝

  • Feet of clay
    Feet of clay أيام قبل

    Who leaves a mosquito on them for that long

  • aniket anand
    aniket anand 2 أيام قبل

    How did you put the camera under the skin?

  • mikshin
    mikshin 3 أيام قبل

    Big shoutout to dragonfly larvae eating mosquito larvae on a daily basis. Never change guys!

  • mymeammypeach
    mymeammypeach 5 أيام قبل

    You do not need to know just kill them directly

  • Sir Carti The Third
    Sir Carti The Third 5 أيام قبل


  • corythebest Henderson
    corythebest Henderson 5 أيام قبل +1

    Hi i hat them

  • Reah Gaborno
    Reah Gaborno 6 أيام قبل


    • Deep Look
      Deep Look  4 أيام قبل

      Yep. Mosquitoes are insects, which are part of the animal kingdom.

  • Arinator Crybaby
    Arinator Crybaby 7 أيام قبل +1

    Me: walks by container full of water
    Mosquito larvae: *wiggles*
    Me: ._. *grabs Clorox*

  • Divine_XD
    Divine_XD 8 أيام قبل

    I’m bout to kill every mosquito I see

  • Amar Shokher Vlogs
    Amar Shokher Vlogs 9 أيام قبل

    Kill them all!

  • Ben A
    Ben A 9 أيام قبل

    What makes it so itchy after it injects me

  • Shamila Mohamed
    Shamila Mohamed 9 أيام قبل

    Well technically this is only in countries with big a forest or multiple
    Lucky for me i dont even think we have a forest😎

  • EmoCxt
    EmoCxt 9 أيام قبل

    Malaria is not a virus, it is a protist that is carried by female mosquitoes which are the vectors for malaria.

  • Kevin March
    Kevin March 9 أيام قبل

    Who’s arm was used on this video for close up purposes? 😂

  • Nour Playz!
    Nour Playz! 9 أيام قبل

    Larvaes that move... wow what a coincidence but cute.

  • v.fadinqjuli
    v.fadinqjuli 11 أيام قبل +1

    was anyone else itchy while watching this? lol

  • army stay
    army stay 11 أيام قبل

    its 03:23 why am i here

  • Kerostereo
    Kerostereo 11 أيام قبل

    am i bad person for wanting to pour acid into the water of mosquito babies?

  • emó
    emó 12 أيام قبل

    i could snash her rn so hard

  • Jamie Dale
    Jamie Dale 13 أيام قبل

    I have a fear of mosquitoes now.......

  • Kai Hilb
    Kai Hilb 13 أيام قبل

    Love your videos.

  • • esturiia •
    • esturiia • 13 أيام قبل

    I now have a phobia

  • Mehraan Formoli
    Mehraan Formoli 13 أيام قبل

    what happens if you drink it when it’s alive 🤔

  • 120starter
    120starter 13 أيام قبل

    I love your voice, it's so ssssssscienxy

  • Maša Kozmus
    Maša Kozmus 14 أيام قبل

    Im watching this becuse of school project… wish me luck

  • Slayden Playz
    Slayden Playz 14 أيام قبل

    I got a mosquito bite during the video

  • Pest Removal Warrior
    Pest Removal Warrior 14 أيام قبل

    Epic video. Amazing Amazing😍😍

  • Nat Perry Volleyball
    Nat Perry Volleyball 14 أيام قبل

    I’m just

  • Hello Everybody
    Hello Everybody 14 أيام قبل

    My dad says mosquitoes are weak.... but i told him its very painful but he didnt believe me.

    THESE 4RE THE BL1ND P0T4T05 14 أيام قبل


  • Balam
    Balam 14 أيام قبل

    Mesmerizing channel

  • Aubrey with animals
    Aubrey with animals 15 أيام قبل

    I love animals so I took in the larve not knowing they were mosquitoes

  • Bunga Hades
    Bunga Hades 15 أيام قبل

    make sure u guys kill them after the shoot, okay?

  • Pranav Bhardwaj
    Pranav Bhardwaj 15 أيام قبل +2

    Who else felt “itchy” during this video

  • English Angrezi
    English Angrezi 16 أيام قبل

    The most wanted animal

  • Arkin Tagle
    Arkin Tagle 17 أيام قبل +1

    Me: sitting
    Mosquito female : hey can I drink your blood then make baby
    Me: No
    Mosquito female: :( I still drink you blood lay an egg
    Me: No I don't want to be you wife and I don't want to have baby I just yeet them all
    Mosquito female: No!!!

  • imiimo
    imiimo 18 أيام قبل

    donation, i let them bite me, they just wanna live.
    and when they had grandchild, i kill all of them in one spray

  • Sandeep Meena
    Sandeep Meena 18 أيام قبل +1

    Female creature is very dangerous so please stay away from them

  • Dangerous Woman
    Dangerous Woman 18 أيام قبل


  • FattyCat ChubbyCat
    FattyCat ChubbyCat 19 أيام قبل

    2:49 that’s hilarious and most satisfied ever 😂

  • Jerry Ascione
    Jerry Ascione 20 أيام قبل

    and this video was brought to you by OFF

  • Jeff
    Jeff 21 أيام قبل

    feels like itchy just by watching

  • Dedxxx x
    Dedxxx x 21 أيام قبل

    Nuke the mosquitoes

  • Al Khalid Perfumes Dot Biz
    Al Khalid Perfumes Dot Biz 22 أيام قبل

    If I get mosquito around I slap it hard when it gets dizzi It falls on the floor then I calmly kill it

  • Jim Halpert
    Jim Halpert 22 أيام قبل +1

    2:50 MURDER! M U R D E R !

  • Avakin IceDemon
    Avakin IceDemon 23 أيام قبل

    Ok im going to buy male mosquitoes

  • Rainbow Snowflake-涣哥哥的抹额给瑶妹

    When I get bitten by a mosquito before: eh, whatever, just hate the itching
    When I see a mosquito now: I’m gonna die!!!! GET AWAY FROM ME

  • j p
    j p 23 أيام قبل

    No mosquitos were injured during this shooting

  • نذير يوسف
    نذير يوسف 24 أيام قبل

    Tiniest insect sends us to the graveyard.
    We are weak.

  • foomp
    foomp 26 أيام قبل +1

    "Sometimes, we take theirs" **SMASH** YESSSSSSS!

  • c c
    c c 26 أيام قبل


  • Goku Ultra Hacker YT
    Goku Ultra Hacker YT 27 أيام قبل +1


  • Spider_Sky
    Spider_Sky 27 أيام قبل +1

    Is anyone lying in bed fighting off the mosquito trying to bite into you? 😰

  • snark
    snark 27 أيام قبل

    She filled up on the dudes blood and then died lol

  • Kishawn Roper
    Kishawn Roper 27 أيام قبل

    I thought they only had one