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3ESO How endocrine coordination works - Contenido educativo

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Subido el 8 de febrero de 2021 por Marta G.

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Hello! You have already studied the different glands that are part of the endocrine system, 00:00:00
the glands, the hormone, and the different functions of them. 00:00:06
But now a question comes to your mind. 00:00:10
How does the endocrine coordination work? 00:00:14
We're going to learn it today. 00:00:17
Now please take your notebook, open it up, and after the photocopy I give you in class, 00:00:28
you need to write the title 4.1, How does the endocrine coordination work? 00:00:33
Before I start explaining with a beautiful drawing how does the endocrine system work, 00:00:39
you need to copy three definitions, endocrine cell, receptor and target cell. 00:00:47
Endocrine cells, cells which secrete hormones and release them into the blood stream. 00:00:54
Receptors. Molecules on the cell membrane that binds to specific hormones. 00:01:01
Target cell. Cells that respond to specific hormones. 00:01:10
Have you finished copying? Great. 00:01:16
Now imagine that we have an endocrine cell, which is inside the gland. 00:01:19
We have here a gland that could be the pancreas, 00:01:23
could be, for example, the pituitary gland, could be the thyroid, any gland that you can think about, 00:01:28
okay? This gland has endocrine cells. These cells, that's as we say in definition, release hormones. 00:01:38
The hormones are the triangles which are going to get into the blood capillaries. 00:01:46
when they get into the blood capillaries 00:01:52
they are going to follow 00:01:56
the path of the blood 00:01:58
with the blood stream 00:02:00
inside the plasma 00:02:02
and it's going to travel 00:02:04
along the capillaries 00:02:06
they get to the 00:02:09
arteriole 00:02:10
they get to the 00:02:12
veins, they get to arteries 00:02:14
etc. until 00:02:16
they come to a place 00:02:18
where they need to be 00:02:20
the target cell, the place where there is a receptor on the outer part, on the 00:02:21
membrane, which is the place where they are going out of the plasma 00:02:28
and they are going to fix into the receptor. Imagine that we have this 00:02:35
receptor on the membrane of the target cell. The hormone comes around here and 00:02:42
and says oh this is the place where i need to go and it has the correct shape exactly the same 00:02:49
shape as the place where you need to fix with the receptor that is really really important what 00:02:57
happens if it's not the correct shape then we are in the non-target cell when the hormone reaches 00:03:04
a non-target cell it has a different type of receptor if it comes here it doesn't fit 00:03:12
it's not the place where it needs to be so it's not going to join to the to this cell and it's 00:03:22
going not going to make the action it needs to do so it's only going to get to the target cell 00:03:28
and then start performing the action that it needs to do imagine that we have a second hormone that 00:03:35
is also going along the blood capillaries but has this shape when it reaches this receptor then it's 00:03:43
going to fix it's going to fix and it's going to perform a certain action then this cell will 00:03:54
become a target cell for the red hormone but it's not going to be the target cell 00:04:03
for the green hormone so only one receptor fixes with one hormone and then 00:04:09
start performing the function and you will think what happens later we have a 00:04:17
hormone that is going to get to the target cell what is going to happen next 00:04:24
when the hormone fixes fix with the receptor is going we say to perform a 00:04:29
function the target cell is going to be activated what does this mean it means 00:04:38
that is going to release some protein to is going to start dividing it depends on 00:04:50
the hormones imagine for example the growth hormone what was a function of 00:04:56
growth hormone the function of the growth hormone was to grow the bones so if we have 00:05:02
the growth hormone released getting to the bloodstream and then gets to the bones when 00:05:15
it gets to the bone it's going to activate the bones and the bone cell will start multiplying 00:05:21
dividing and making new cells to make the bone grow. There are also hormones that are going to 00:05:28
inactivate the cell. It's not going always to be a positive action. Imagine that we are growing, 00:05:38
growing, growing and we need to stop. We need a signal for the cell to say hey stop, do not divide 00:05:47
anything else. Do not divide more. That action is going also to be performing hormones. So there 00:05:53
are hormones that will activate cells, hormones that will inactivate cells. I want you now to 00:06:00
think of different examples of how this is going to happen. To have here a gland, draw the gland 00:06:07
or write the name of the gland, write endocrine cell, the type of hormone is going to release 00:06:16
to the blood capillary try to get us the way that hormone has to go by now that you have 00:06:21
studied the circulatory system you should know a little bit about it right the organ that is going 00:06:27
to be the target cell of that hormone and the function that it needs to be done there 00:06:34
it's an exercise so do it on the right side of your notebook 00:06:41
and that's all for today i hope you will understand a little bit the function of 00:06:46
these hormones you also have a video in the aula virtual which tells you more about this 00:06:58
Ha, ha, ha, ha, ha, ha, ha, ha, ha, ha. 00:07:15
Idioma/s:
en
Autor/es:
Marta García Pérez
Subido por:
Marta G.
Licencia:
Reconocimiento - No comercial - Sin obra derivada
Visualizaciones:
6
Fecha:
8 de febrero de 2021 - 8:45
Visibilidad:
Clave
Centro:
IES FORTUNY
Duración:
07′ 20″
Relación de aspecto:
1.78:1
Resolución:
1920x1080 píxeles
Tamaño:
266.65 MBytes

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