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Arachnids and myriapods 1ºA IES PAL 21-22 - Contenido educativo

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Subido el 4 de abril de 2022 por Rafael Miguel M.

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Vídeo de manos sobre arácnidos y miriápodos (invertebrates project)

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Hello, my name is Nicolas, and we are here to talk about Arachnids. 00:00:00

How do they act? 00:00:09

The Arachnids have Viratio Symmetry. 00:00:12

That means that if you sign them from the top to the bottom, 00:00:16

each half will be exactly the same. 00:00:24

They have a pair of nails of their hand activity divided into parts, the laparots and abdomen, and they have four pairs of legs. 00:00:27

They live in freshwater and in all marine environment, and they are divided in three types, spiders, scorpions, and minks. 00:00:41

They have a name on their hands and bodies that are divided into two segments. 00:00:55

They live in moist cork and they are divided into a band and they have two body sections, a hip and a leg. 00:01:18

You know that the nutrition in arachnids. 00:01:29

So, arachnids are carnivorous and they feed on small insects. 00:01:38

So, to feed they can hunt or trap their prey in a web. 00:01:44

Once they capture the prey, they pour digestive enzymes on them, and then they suck the predigested tissues, and then the tissues go through the esophagus and stomach, and mixes with the malficient tubes and digestive system waste, and then they expel through the anus. 00:01:49

And now, the respiratory system. Spiders have five types of respiration. One is a pair of book lungs, the other is two pairs of book lungs, and then a pair of trachea, the other two pairs of trachea, and the last one is the gills. 00:02:17

Oh, I forgot. Also, they have two pair of trackers and booklets. Sorry. 00:02:44

And now, the circular system. 00:02:51

So, spiders have an open circular system with special venous channels, sorry, which have an emolent conducting on them, which is like their blood. 00:02:56

And they use this to carry substances through all their body. 00:03:13

Now, nutrition in myriapods. 00:03:19

So, the group of myriapods is formed by millipedes and centipedes. 00:03:28

Millipedes are herbivores and they feed on dead plants. 00:03:34

And centipedes are carnivores, also feeding on small insects. So, the centipedes use their first pair of legs to capture their prey. 00:03:39

And now, the digestive system. So, the digestive system in millipedes consists on a, the majority, we can say, consists on a gut. And the digestive system on the centipedes consists on a gut and a stomach. 00:04:00

Now the circulatory system, so the circulatory system consists on a long and tubular heart 00:04:20

which extends through all their body and they have a few if not blood vessels. 00:04:37

And finally the respiratory system. 00:04:44

So both millipedes and centipedes have a respiratory system which consists of a tracheal system 00:04:51

and some spiracles that open to get oxygen through the abdomen. 00:05:01

Now the excretory system. 00:05:11

So media pots have the same exclusionary system as arachnids. 00:05:14

So now we are going to do again arachnids interaction. 00:05:24

So now we are going to do senses and so the little hairs on the spiders have a part of 00:05:29

the sense of touch, which basically consists in, like, if you would have touched the spider, 00:05:40

they would have reacted immediately, so, and then there's the, what scientists call the 00:05:51

triatribothia which basically consists again um it's basically a lot of sense of touch 00:06:04

a which pizza covered with a thin membrane with a thin membrane which also has the 00:06:15

So now I'm going to show you the part of the three-edged robothria. 00:06:28

So this is the sita, like this long brown stick here, which is actually like the hair. 00:06:42

Down here is the membrane, as I already said. 00:06:50

This long blue line is the nerve processor and this like little bubble is the helmet. 00:06:55

And with that we are gonna pass to nervous system. 00:07:10

So basically the nervous system consists in the sensitive hairs on the spotless that are 00:07:17

capable of detecting movement on the web. 00:07:24

They also can detect different type of smell with the chemo-sensitive hairs and detect 00:07:32

if the prey is consumable, which means that if they can eat it, which is something amazing. 00:07:42

And the sensitive hairs on the spider's legs, you can see maybe here that they have like 00:07:52

hers. It's basically they cover the whole spider which basically are part of the 00:08:01

nervous system of the spiders. It's completely concentrated cephalothorax 00:08:13

which is like this part here or maybe here. You can't see it here. It's really interesting actually. 00:08:18

Now we are doing the stimuli of the spider. 00:08:28

So, for the stimuli of the spider, basically, the spider sensors consist of a minute slip 00:08:33

the lyriform organs and you can see a lot of organs in this like diagram and 00:08:45

they can receive information on local movement this is another good example of the lyriform 00:08:56

organs that consist of the information the local information and they like communicate 00:09:03

by this thing that would be like them then now there is the endocrine system so then system 00:09:11

consists of the ones that are generally emitted by females and received I knew but this is a 00:09:25

pattern is not universal um it's not universal females doesn't need to put colors over page six 00:09:34

basically that they you know do the thing and now we are going for 00:09:44

media there's not much information about it but it's fun 00:09:52

about it so so many of us we are gonna do the nervous system which is not much 00:10:05

so in a sense of it today period connectives 00:10:17

The majority of octopus are oviparous, but there are some different species, such as scorpion. 00:10:41

Generally, the young animal is very different to the other one. 00:10:49

In some of those, they perform a process called metamorphosis. 00:10:55

Importance of the group. 00:11:02

They are also responsible for a suite of activities that have been associated with humans, like pollinating trucks, bouncing on it, or decomposing waste. 00:11:05

Now, we are going to do the questions. 00:11:19

So, first, what type of filometry do the myriapods have? 00:11:23

Second, what is the scientific name for the organ which pits are covered in the membrane? 00:11:28

Third, are all the altropods oviparous on the viviparous tube? 00:11:36

Two examples of each one. 00:11:45

How many types of respiratory system do myriad birds, arachnids, and myriads have? 00:11:47