Strange Stripes Inside the Sea Cucumber ! - Sea Cucumber Dissection

00:06:12
https://www.youtube.com/watch?v=DkiGiwyoeDQ

摘要

TLDRCette vidéo présente l'anatomie du concombre de mer, un échinoderme qui peut se contracter et s'étendre. On explore sa locomotion via des pieds tubulaires, son alimentation grâce aux tentacules, son système respiratoire et ses mécanismes de défense, incluant l'expulsion d'organes internes. La dissection révèle des détails sur les gonades, le tractus digestif et le système vasculaire d'eau. Ce concurrent de la mer, bien qu'il soit considéré comme un aliment nutritif, peut être difficile à apprécier pour certains, comme Sebastian, qui reste un mangeur difficile malgré tout.

心得

  • 🌊 Un concombre de mer peut se contracter et s'étendre.
  • 🐚 Les pieds tubulaires aident à la locomotion.
  • 🤲 Les tentacules sont utilisés pour se nourrir.
  • 💧 Le concombre de mer respire à travers des arbres respiratoires.
  • 💩 L'anus joue un rôle dans la digestion et la respiration.
  • 😮 Le concombre de mer peut expulser ses organes internes pour se défendre.
  • 🍽️ Ce sont des aliments nutritifs, souvent préparés en plats.
  • 🔬 La dissection révèle des gonades et un long tractus digestif.
  • 🌱 Les concombres de mer ont un système vasculaire d'eau utilisant l'eau de mer.
  • 🐠 Des parasites peuvent vivre à l'intérieur de leur corps.

时间轴

  • 00:00:00 - 00:06:12

    Le concombre de mer est un échinoderme, semblable à l'oursin et à l'étoile de mer, qui peut changer de taille et se déplacer grâce à ses pieds tubulaires situés sur sa partie abdominale. Ces pieds, qui se développent lorsque le concombre de mer est dans l'eau, lui permettent de se déplacer et d'attraper sa nourriture, constituée de plancton et de matière organique. Le concombre de mer possède également une bouche entourée de tentacules qui sont souvent invisibles hors de l'eau, et un anus horizontal qui joue un rôle clé dans son système respiratoire et digestif. Cet anus, en plus de l'évacuation, permet l'entrée d'eau dans un organe respiratoire situé près de celui-ci, rencontrant une espace appelée cloaca. En cas de danger, le concombre de mer peut se débarrasser de ses intestins pour se protéger. La dissection révèle des organes internes comme les gonades, le tractus digestif et les organes respiratoires appelés arbres respiratoires. Enfin, le concombre de mer utilise un système de vaisseaux d'eau pour ses fonctions corporelles et possède des muscles longs qui permettent de contrôler sa taille.

思维导图

视频问答

  • Comment le concombre de mer se déplace-t-il ?

    Le concombre de mer se déplace grâce à ses pieds tubulaires situés sur la partie abdominale.

  • Quelle est la fonction des tentacules chez le concombre de mer ?

    Les tentacules permettent au concombre de mer de ramper et d'attraper sa nourriture.

  • Comment le concombre de mer respire-t-il ?

    Le concombre de mer possède des organes respiratoires appelés arbres respiratoires qui absorbent l'oxygène de l'eau.

  • Pourquoi le concombre de mer expulse-t-il ses organes internes ?

    C'est une stratégie de défense qui lui permet de se protéger des prédateurs.

  • Que contient le tractus digestif du concombre de mer ?

    Le tractus digestif du concombre de mer comprend la bouche, l'œsophage, l'estomac et les intestins.

  • Quels organes reproducteurs trouve-t-on chez le concombre de mer ?

    Les gonades, qui peuvent être ovaries chez les femelles et testicules chez les mâles.

  • Quelle est la taille du concombre de mer ?

    Le concombre de mer peut s'étendre et se contracter, devenant très long ou plus court.

  • Pourquoi les concombres de mer sont-ils considérés comme nutritifs ?

    Ils sont riches en nutriments et souvent préparés en plat savoureux.

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  • 00:00:00
    if you look inside the sea cucumber
  • 00:00:03
    there are five lines
  • 00:00:06
    what on Earth is this
  • 00:00:08
    [Music]
  • 00:00:12
    today let's do the sea cucumber Anatomy
  • 00:00:14
    see cucumber can expand and decrease it
  • 00:00:17
    body freely it gets very long like this
  • 00:00:20
    it looks like cucumber doesn't it sea
  • 00:00:24
    cucumber is akinoderm such as sea urchin
  • 00:00:26
    and Starfish like the sea urchin and
  • 00:00:29
    starfish's Tube feed in my previous
  • 00:00:31
    videos
  • 00:00:32
    sea cucumber also crawls with its two
  • 00:00:34
    feet their tube feet is developed on the
  • 00:00:37
    abdominal area so it crawls toward the
  • 00:00:39
    abdomen
  • 00:00:41
    you can't see tube feed well outside
  • 00:00:43
    water
  • 00:00:44
    but if you put sea cucumber in the water
  • 00:00:47
    you can see them coming out and turning
  • 00:00:49
    its body
  • 00:00:50
    [Music]
  • 00:00:53
    at the end of the two feet there are
  • 00:00:55
    suckers you can see them attached if you
  • 00:00:58
    pull the sea cucumber's body
  • 00:00:59
    [Music]
  • 00:01:01
    sea urchin and starfish have a vertical
  • 00:01:03
    mouth and anus however sea cucumbers are
  • 00:01:07
    horizontal shape it's easy to
  • 00:01:09
    distinguish the sea cucumber's mouth
  • 00:01:11
    from anus the mouth is where the
  • 00:01:13
    tentacles are and the other side is anus
  • 00:01:16
    many people don't know that there are
  • 00:01:18
    tentacles around the sea cucumber's
  • 00:01:20
    mouth because you can't see tentacles
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    well outside the water but if you put
  • 00:01:25
    them in water you can see many tentacles
  • 00:01:27
    surrounding the mouth
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    sea cucumber uses these tentacles to
  • 00:01:32
    crawl and uses like a hand to get food
  • 00:01:34
    in its mouth so sea cucumber uses their
  • 00:01:37
    tentacles and tube feet to crawl on the
  • 00:01:39
    seabed to eat plankton and organic
  • 00:01:41
    matters
  • 00:01:43
    and the other side of the black hole is
  • 00:01:45
    its anus it does a lot of things besides
  • 00:01:48
    experimenting inside the anus of sea
  • 00:01:50
    cucumber there is an empty space called
  • 00:01:53
    the cloca around clocca there are
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    muscles that make anus contract and
  • 00:01:58
    relax like this the action of these
  • 00:02:00
    muscles causes water to enter and exit
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    through its anus sea cucumber has a
  • 00:02:05
    respiratory organ located on the side so
  • 00:02:09
    it can breathe using the water that came
  • 00:02:11
    in through the anus
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    since sea cucumber can obtain nutrients
  • 00:02:15
    by digesting Plankton and organic matter
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    that have entered the anus through the
  • 00:02:19
    water flow we can know that sea cucumber
  • 00:02:22
    can also eat through the anus
  • 00:02:24
    a lot of works for anus isn't it
  • 00:02:28
    since the anus of sea cucumber has a
  • 00:02:30
    flow of water and also a cozy empty
  • 00:02:32
    space some fishes and small Crustaceans
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    may live here as parasites some
  • 00:02:38
    parasites live on the intestines of sea
  • 00:02:40
    cucumbers but sea cucumbers are very
  • 00:02:43
    regenerative so they don't get serious
  • 00:02:45
    damage I see cucumbers spill their guts
  • 00:02:48
    into the anus when they're in danger
  • 00:02:50
    this is a protection strategy using its
  • 00:02:53
    excellent regenerative power it can be
  • 00:02:56
    seen as one of the autotami phenomena
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    such as tail cutting in lizards
  • 00:03:01
    some sea cucumbers dump out their
  • 00:03:03
    predators by pouring out a sticky tube
  • 00:03:05
    called the qvarian tubules it's an
  • 00:03:08
    amazing creature isn't it now let's
  • 00:03:12
    dissect the sea cucumber
  • 00:03:15
    first cut the sea cucumber
  • 00:03:20
    [Music]
  • 00:03:23
    if you check the inside you can see that
  • 00:03:26
    it is full of some things the orange
  • 00:03:28
    thread like organ here is the sea
  • 00:03:30
    cucumber gonads
  • 00:03:32
    these orange ones are the ovaries the
  • 00:03:35
    female gonads
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    males have milky testis like this
  • 00:03:39
    this one was full of gonads once you've
  • 00:03:42
    taken out the gonads you can see the
  • 00:03:45
    digestive tract of the sea cucumber from
  • 00:03:47
    the mouth to the esophagus stomach and
  • 00:03:50
    intestines they are all connected to the
  • 00:03:52
    anus
  • 00:03:53
    let's take out the digestive tract
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    carefully
  • 00:03:57
    it seems to be very long
  • 00:04:01
    some people make this digestive tract to
  • 00:04:03
    salted Seafood for eating
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    and inside the sea cucumber there's one
  • 00:04:08
    more organ besides gonads and digestive
  • 00:04:10
    tract we've learned that sea cucumber
  • 00:04:13
    breeds through the anus this is the
  • 00:04:15
    respiratory organ of a sea cucumber
  • 00:04:17
    called the respiratory trees the
  • 00:04:20
    respiratory trees is located both sides
  • 00:04:22
    of the anus so it absorbs oxygen from
  • 00:04:24
    the water if you take out the
  • 00:04:27
    respiratory trees and put it in the
  • 00:04:28
    water you can see it spreads out like
  • 00:04:31
    Branch shape this shape looks like tree
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    so people call this as the respiratory
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    trees now if you remove all the internal
  • 00:04:39
    organs you can see five Stripes inside
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    the sea cucumber it is a muscle of sea
  • 00:04:44
    cucumber called longitudinal muscle sea
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    cucumbers control their size of the body
  • 00:04:49
    by Contracting and relaxing the
  • 00:04:51
    longitudinal muscles when they feel
  • 00:04:54
    threatened they shrink and Harden their
  • 00:04:56
    body
  • 00:04:57
    and if you look around its mouth there's
  • 00:05:00
    a ring of calcareous ossicles around the
  • 00:05:03
    esophagus and there are muscles around
  • 00:05:05
    this ring that move the tentacles sea
  • 00:05:08
    cucumbers can pull their tentacles into
  • 00:05:10
    their bodies with these muscles
  • 00:05:13
    lastly see cucumbers absorb sea water
  • 00:05:15
    into their body move their two feet and
  • 00:05:18
    tentacles and use them like blood the
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    body system of these echinoderms is
  • 00:05:23
    called the water vascular system if you
  • 00:05:26
    are curious about the water vascular
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    system please refer to the starfish
  • 00:05:30
    anatomy video
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    this is the end of the sea cucumber
  • 00:05:34
    Anatomy
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    see cucumber is known as a high
  • 00:05:38
    nutritional food
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    after frying the sea cucumber
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    deliciously I hit it between the chicken
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    breasts and gave it to Sebastian
  • 00:05:49
    surprisingly eat well
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    oh but in the end he's a picky eater
  • 00:05:58
    Sebastian doesn't seem to like sea
  • 00:06:00
    cucumbers either
  • 00:06:03
    but anyway he is happy
  • 00:06:06
    if you enjoyed this video please
  • 00:06:08
    subscribe
标签
  • concombre de mer
  • anatomie
  • échinodermes
  • biologie marine
  • respiration
  • locomotion
  • tentacules
  • gonades
  • système vasculaire
  • nutrition