1 00:00:00,180 --> 00:00:09,320 Hello, my name is Nicolas, and we are here to talk about Arachnids. 2 00:00:09,320 --> 00:00:12,320 How do they act? 3 00:00:12,320 --> 00:00:16,320 The Arachnids have Viratio Symmetry. 4 00:00:16,320 --> 00:00:24,320 That means that if you sign them from the top to the bottom, 5 00:00:24,320 --> 00:00:27,320 each half will be exactly the same. 6 00:00:27,320 --> 00:00:41,320 They have a pair of nails of their hand activity divided into parts, the laparots and abdomen, and they have four pairs of legs. 7 00:00:41,320 --> 00:00:55,320 They live in freshwater and in all marine environment, and they are divided in three types, spiders, scorpions, and minks. 8 00:00:55,320 --> 00:01:18,319 They have a name on their hands and bodies that are divided into two segments. 9 00:01:18,319 --> 00:01:29,319 They live in moist cork and they are divided into a band and they have two body sections, a hip and a leg. 10 00:01:29,319 --> 00:01:38,430 You know that the nutrition in arachnids. 11 00:01:38,430 --> 00:01:44,430 So, arachnids are carnivorous and they feed on small insects. 12 00:01:44,430 --> 00:01:49,430 So, to feed they can hunt or trap their prey in a web. 13 00:01:49,430 --> 00:02:17,150 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. 14 00:02:17,150 --> 00:02:44,150 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. 15 00:02:44,150 --> 00:02:50,210 Oh, I forgot. Also, they have two pair of trackers and booklets. Sorry. 16 00:02:51,289 --> 00:02:55,129 And now, the circular system. 17 00:02:56,810 --> 00:03:13,449 So, spiders have an open circular system with special venous channels, sorry, which have an emolent conducting on them, which is like their blood. 18 00:03:13,449 --> 00:03:18,449 And they use this to carry substances through all their body. 19 00:03:19,449 --> 00:03:22,449 Now, nutrition in myriapods. 20 00:03:28,849 --> 00:03:34,849 So, the group of myriapods is formed by millipedes and centipedes. 21 00:03:34,849 --> 00:03:39,849 Millipedes are herbivores and they feed on dead plants. 22 00:03:39,849 --> 00:04:00,009 And centipedes are carnivores, also feeding on small insects. So, the centipedes use their first pair of legs to capture their prey. 23 00:04:00,009 --> 00:04:20,930 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. 24 00:04:20,930 --> 00:04:37,240 Now the circulatory system, so the circulatory system consists on a long and tubular heart 25 00:04:37,240 --> 00:04:44,660 which extends through all their body and they have a few if not blood vessels. 26 00:04:44,660 --> 00:04:51,329 And finally the respiratory system. 27 00:04:51,329 --> 00:05:01,329 So both millipedes and centipedes have a respiratory system which consists of a tracheal system 28 00:05:01,329 --> 00:05:11,189 and some spiracles that open to get oxygen through the abdomen. 29 00:05:11,189 --> 00:05:14,750 Now the excretory system. 30 00:05:14,750 --> 00:05:24,759 So media pots have the same exclusionary system as arachnids. 31 00:05:24,759 --> 00:05:29,500 So now we are going to do again arachnids interaction. 32 00:05:29,500 --> 00:05:40,240 So now we are going to do senses and so the little hairs on the spiders have a part of 33 00:05:40,240 --> 00:05:51,019 the sense of touch, which basically consists in, like, if you would have touched the spider, 34 00:05:51,019 --> 00:06:04,939 they would have reacted immediately, so, and then there's the, what scientists call the 35 00:06:04,939 --> 00:06:14,379 triatribothia which basically consists again um it's basically a lot of sense of touch 36 00:06:15,899 --> 00:06:28,589 a which pizza covered with a thin membrane with a thin membrane which also has the 37 00:06:28,589 --> 00:06:42,519 So now I'm going to show you the part of the three-edged robothria. 38 00:06:42,519 --> 00:06:50,040 So this is the sita, like this long brown stick here, which is actually like the hair. 39 00:06:50,040 --> 00:06:55,100 Down here is the membrane, as I already said. 40 00:06:55,100 --> 00:07:10,439 This long blue line is the nerve processor and this like little bubble is the helmet. 41 00:07:10,439 --> 00:07:17,040 And with that we are gonna pass to nervous system. 42 00:07:17,040 --> 00:07:24,000 So basically the nervous system consists in the sensitive hairs on the spotless that are 43 00:07:24,000 --> 00:07:32,800 capable of detecting movement on the web. 44 00:07:32,800 --> 00:07:42,779 They also can detect different type of smell with the chemo-sensitive hairs and detect 45 00:07:42,779 --> 00:07:52,740 if the prey is consumable, which means that if they can eat it, which is something amazing. 46 00:07:52,740 --> 00:08:01,819 And the sensitive hairs on the spider's legs, you can see maybe here that they have like 47 00:08:01,819 --> 00:08:13,339 hers. It's basically they cover the whole spider which basically are part of the 48 00:08:13,339 --> 00:08:18,980 nervous system of the spiders. It's completely concentrated cephalothorax 49 00:08:18,980 --> 00:08:28,720 which is like this part here or maybe here. You can't see it here. It's really interesting actually. 50 00:08:28,720 --> 00:08:33,720 Now we are doing the stimuli of the spider. 51 00:08:33,720 --> 00:08:45,720 So, for the stimuli of the spider, basically, the spider sensors consist of a minute slip 52 00:08:45,720 --> 00:08:54,679 the lyriform organs and you can see a lot of organs in this like diagram and 53 00:08:56,600 --> 00:09:03,799 they can receive information on local movement this is another good example of the lyriform 54 00:09:03,799 --> 00:09:11,000 organs that consist of the information the local information and they like communicate 55 00:09:11,000 --> 00:09:25,200 by this thing that would be like them then now there is the endocrine system so then system 56 00:09:25,200 --> 00:09:34,000 consists of the ones that are generally emitted by females and received I knew but this is a 57 00:09:34,000 --> 00:09:44,240 pattern is not universal um it's not universal females doesn't need to put colors over page six 58 00:09:44,240 --> 00:09:51,120 basically that they you know do the thing and now we are going for 59 00:09:52,960 --> 00:10:02,029 media there's not much information about it but it's fun 60 00:10:05,629 --> 00:10:17,389 about it so so many of us we are gonna do the nervous system which is not much 61 00:10:17,389 --> 00:10:26,970 so in a sense of it today period connectives 62 00:10:41,679 --> 00:10:49,679 The majority of octopus are oviparous, but there are some different species, such as scorpion. 63 00:10:49,679 --> 00:10:55,679 Generally, the young animal is very different to the other one. 64 00:10:55,679 --> 00:11:02,679 In some of those, they perform a process called metamorphosis. 65 00:11:02,679 --> 00:11:05,679 Importance of the group. 66 00:11:05,679 --> 00:11:17,200 They are also responsible for a suite of activities that have been associated with humans, like pollinating trucks, bouncing on it, or decomposing waste. 67 00:11:19,200 --> 00:11:23,710 Now, we are going to do the questions. 68 00:11:23,710 --> 00:11:28,710 So, first, what type of filometry do the myriapods have? 69 00:11:28,710 --> 00:11:36,710 Second, what is the scientific name for the organ which pits are covered in the membrane? 70 00:11:36,710 --> 00:11:45,090 Third, are all the altropods oviparous on the viviparous tube? 71 00:11:45,090 --> 00:11:47,669 Two examples of each one. 72 00:11:47,669 --> 00:12:03,850 How many types of respiratory system do myriad birds, arachnids, and myriads have?