Physiology Introduction - What is Physiology? - A Complete Playlist - Doctors, Nurses, Undergrads

00:05:59
https://www.youtube.com/watch?v=6qk_LTVXZ2w

摘要

TLDRCette vidéo introduit la physiologie humaine, qui est l'étude des fonctions et mécanismes du corps humain. Elle distingue la physiologie de l'anatomie, souligne l'importance de la communication à l'intérieur du corps, et décrit la composition et le rôle des fluides intracellulaires et extracellulaires. Le liquide extracellulaire, qui comprend des nutriments et des déchets, joue un rôle crucial dans la circulation sanguine. La vidéo prépare également le terrain pour une prochaine discussion sur l'homéostasie, un concept clé en physiologie.

心得

  • 🧬 La physiologie est l'étude des fonctions du corps humain.
  • 🧠 Anatomie vs Physiologie : structure vs fonction.
  • 💧 60% du poids du corps est de l'eau.
  • 📊 100 trillions de cellules dans le corps.
  • 🔄 Le liquide extracellulaire circule dans le sang.
  • 🌿 Le liquide intracellulaire est différent du liquide extracellulaire.
  • ⚖️ L'homéostasie maintient un environnement interne stable.
  • 🔍 Prochain sujet : homéostasie, restez connectés !

时间轴

  • 00:00:00 - 00:05:59

    Dans cette introduction à la physiologie humaine, Ellis explique le terme 'physiologie', qui provient des mots grecs 'thesis' (origine ou nature) et 'logia' (étude). Il précise que la physiologie humaine se concentre sur les fonctions et les mécanismes du corps humain, en contraste avec l'anatomie, qui se concentre sur la structure. Ellis aborde l'importance de la régulation et de la communication dans le corps, notamment via le système nerveux rapide et le système endocrinien plus lent. Il fait remarquer que le corps humain est constitué d'environ 100 trillions de cellules et que 60 % de son poids est de l'eau, répartie entre le compartiment intracellulaire (deux tiers) et le fluide extracellulaire (un tiers). Il explique les rôles de l'eau et des ions dans ces environnements internes, des échanges de nutriments et de déchets, et l'importance de la circulation du fluide extracellulaire dans le corps. La vidéo annonce également une prochaine discussion sur l'homéostasie et encourage les abonnements et le soutien aux réseaux sociaux.

思维导图

视频问答

  • Qu'est-ce que la physiologie humaine ?

    La physiologie humaine est l'étude des fonctions et des mécanismes du corps humain.

  • Quelle est la différence entre anatomie et physiologie ?

    L'anatomie est l'étude de la structure du corps, tandis que la physiologie se concentre sur sa fonction.

  • Combien de cellules y a-t-il dans le corps humain ?

    Il y a environ 100 trillions de cellules dans le corps humain.

  • Quel pourcentage du poids corporel est constitué d'eau ?

    Environ 60% du poids corporel est constitué d'eau.

  • Qu'est-ce que le liquide extracellulaire ?

    Le liquide extracellulaire est le fluide entourant les cellules, contenant des nutriments et des déchets.

  • Comment se déroule la circulation du liquide extracellulaire ?

    Le liquide extracellulaire circule dans le sang, partant du cœur à travers les artères, puis dans les tissus avant de revenir au cœur.

  • Quelle est la différence entre le liquide intracellulaire et le liquide extracellulaire ?

    Le liquide intracellulaire est riche en potassium, tandis que le liquide extracellulaire est riche en sodium.

  • Qu'est-ce que l'homéostasie ?

    L'homéostasie est le processus par lequel le corps maintient un environnement interne stable.

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  • 00:00:00
    hey guys it's medical is perfection
  • 00:00:01
    Ellis welcome to my new series on
  • 00:00:03
    physiology
  • 00:00:04
    today's topic is an introduction to the
  • 00:00:06
    great field of physiology so let's get
  • 00:00:09
    started
  • 00:00:10
    [Music]
  • 00:00:24
    so let's break this word down physiology
  • 00:00:28
    from the Greek words thesis and logia
  • 00:00:33
    thesis means origin or nature logia
  • 00:00:37
    means the study off but we are not
  • 00:00:40
    talking about every kind of physiology
  • 00:00:42
    we are talking about human physiology
  • 00:00:44
    because this is called medic osis
  • 00:00:46
    perfect nails let's define human
  • 00:00:49
    physiology it's the study of function of
  • 00:00:52
    the human body and its mechanisms so
  • 00:00:56
    Anatomy was the study of structure
  • 00:00:58
    physiology is the study of function not
  • 00:01:01
    only function the mechanism by which we
  • 00:01:04
    carry out this function physiology is
  • 00:01:08
    all about regulation and communication
  • 00:01:11
    your body is well regulated and it has
  • 00:01:15
    excellent communications you have fast
  • 00:01:18
    communications to the neurons and slow
  • 00:01:22
    winds through the endocrine system as
  • 00:01:25
    you know the cell is the basic living
  • 00:01:29
    unit or the building block of your body
  • 00:01:31
    how many cells do you have around 100
  • 00:01:35
    trillion cells that's amazing just think
  • 00:01:39
    about that your body a coordinated
  • 00:01:43
    solution let's talk about the internal
  • 00:01:46
    environment or as they say it in French
  • 00:01:49
    Malou into you so your body has 60% of
  • 00:01:55
    its weight just water
  • 00:01:58
    this 60% is subdivided into the
  • 00:02:02
    intracellular compartment which is
  • 00:02:04
    inside your cells and it's 2/3 of the
  • 00:02:09
    60% and the rest is the extracellular
  • 00:02:12
    fluid outside of yourself and this is
  • 00:02:15
    one third of the 60% suppose that your
  • 00:02:20
    weight is 100 kilograms 60 kilograms
  • 00:02:25
    will be waters which is equal 60 liter
  • 00:02:29
    because the density of water is 1 hello
  • 00:02:34
    physics so intracellular is
  • 00:02:37
    two-thirds of the 60 liters which is
  • 00:02:40
    about 40 liters the extra cellular is
  • 00:02:44
    the rest which is to any liters total is
  • 00:02:48
    60 makes sense
  • 00:02:51
    your cells literally live in the
  • 00:02:54
    extracellular fluid these are your cells
  • 00:02:56
    and here is the extracellular fluid
  • 00:02:58
    surrounding the cells that's why we call
  • 00:03:02
    the extracellular fluid the internal
  • 00:03:05
    environment the ECF is the internal
  • 00:03:09
    environment
  • 00:03:09
    what's the ECF it's water of course with
  • 00:03:14
    ions oxygen nutrients and the bad stuff
  • 00:03:17
    the waste products so we have the good
  • 00:03:19
    stuff and the bad stuff ions such as
  • 00:03:22
    sodium chloride and bicarbonate
  • 00:03:26
    nutrients such as amino acid fatty acids
  • 00:03:29
    and glucose the building blocks of
  • 00:03:32
    protein fat and carbs waste products co2
  • 00:03:39
    which is going to go to the lung to be
  • 00:03:42
    exhaled out and some other garbage stuff
  • 00:03:46
    going to the kidney to be excreted in
  • 00:03:48
    the form of urine back to our story of
  • 00:03:51
    the ECF ECF is circulating in your blood
  • 00:03:56
    coming out of your heart in a vessel
  • 00:03:59
    called an artery and then to the
  • 00:04:01
    capillaries and then there is diffusion
  • 00:04:05
    to the tissue and then back to the vein
  • 00:04:10
    and then back to the heart and this is
  • 00:04:12
    the cycle of the ECF in other words the
  • 00:04:15
    ECF is everywhere
  • 00:04:17
    that's why is the internal Malou now
  • 00:04:21
    let's turn our attention to the intra
  • 00:04:24
    cellular fluid what's inside the cell
  • 00:04:28
    again water with ions but different
  • 00:04:31
    types of ions you have potassium
  • 00:04:33
    magnesium phosphate ions this is
  • 00:04:37
    different from the extra cellular fluid
  • 00:04:40
    which had sodium chloride and
  • 00:04:43
    bicarbonate these are different stuff
  • 00:04:46
    now I'm not saying that you will never
  • 00:04:49
    find sodium in this
  • 00:04:51
    hell no I'm just saying that sodium is
  • 00:04:54
    more common outside of the cell than
  • 00:04:57
    inside by the same token potassium can
  • 00:05:01
    also be found outside of the cell it's
  • 00:05:03
    just more common intracellularly these
  • 00:05:08
    ions keep flowing in and out in and out
  • 00:05:12
    they are regulated we call this ion
  • 00:05:15
    concentration difference and we will
  • 00:05:18
    talk about that later in the next video
  • 00:05:21
    we will talk about homeostasis not to be
  • 00:05:24
    confused with hemostasis these are
  • 00:05:27
    totally different so I strongly urge you
  • 00:05:32
    to subscribe and hit the bell to get
  • 00:05:34
    notified when I release my next video on
  • 00:05:36
    homeostasis also I'm available in
  • 00:05:39
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  • 00:05:42
    and you can support this channel on
  • 00:05:45
    patreon
  • 00:05:46
    you'll get early access you can request
  • 00:05:48
    individual videos on certain topics and
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    plus extra perks thank you so much for
  • 00:05:53
    watching this is medicals perfection
  • 00:05:55
    Ella's as always be safe stay happy and
  • 00:05:57
    study hard
标签
  • physiologie
  • anatomie
  • homéostasie
  • cellules
  • liquide extracellulaire
  • liquide intracellulaire
  • équilibre
  • communication
  • régulation
  • système corporel