Dorsal

... species Chaetognatha Longhair jaw Arrow worms Chitinous spines either side of head, fins about 100 modern species Chordata Cord Chordates Hollow dorsal nervous chord, notochord, pharyngeal slits, endostyle, post-anal tail about 100,000+ Cnidaria Stinging nettle Coelenterates Nematocysts (stinging ...

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... from a part of the ventral medulla called the nucleus ambiguus, while those that control functions of the gastrointestinal tract arise from the dorsal vagal nucleus. After exiting the medulla in the ... * sensory reception ( in human sensory reception: Nerve supply ) ...two-thirds of the tongue ...

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the aortic arches carry blood from the dorsal blood vessel to the ventral blood vessel (I found it in wikipedia & I believe this is correct) But I thought these are worms' hearts & I wasn't wrong! I found this in a website I guess may ...

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... 5 groups: anterior, medial (centromedian), lateral, intralaminar and reticular nuclei. The lateral nucleus is further divided into ventral and dorsal groups. The dorsal tier nuclei include the lateral dorsal, lateral posterior and pulvinar. The ventral tier nuclei include the ventral anterior, ...

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... VERY similar to trilobites. I can tell you that it is not a horseshoe crab though, we know this because trilobites have horizontal segments in the dorsal region of their abdomen region, horseshoe crabs do not. I think that the trilobite is definitely related to the trilobite. Or it is quite possible ...

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