#bonelustsciencelesson

[bone-lust]

BONELUST SCIENCE LESSON: "What is the difference between venomous and poisonous?" The terms venomous and poisonous are often incorrectly used interchangeably. There is, in fact, a difference between say for example a venomous insect and a poisonous insect. Both venomous and poisonous animals produce a toxin that is injurious or sometimes even lethal to another organism. The real difference between the two terms involves how that toxin is delivered. _ Venomous organisms deliver or inject venom into other organisms, using a specialized apparatus of some kind (usually fangs or a stinger). The potency of different venoms greatly varies on a number of factors. IE - The venom of certain spiders used to paralyze prey are often harmless to humans. _ Poisonous organisms, on the other hand, do not deliver their toxins directly. The entire body, or large parts of it, may contain the poisonous substance. These organisms may be harmful when eaten or touched. The defensive chemicals produced by poisonous creatures or plants may cause vomiting or blistering, or have cardiac impacts on predators that try to eat or handle them. _ Think of the "V" in venomous like a fang or stinger to help remember how the venom is injected. And just think of Poison Ivy when it comes to remembering how a poisonous toxin is spread. But remember that some animals that don't bite are poisonous instead of venomous like the Poison Dart frogs. So it isn't simply a matter of a difference between plant and arachnid/insect/animal. _ #bonelustsciencelesson https://www.instagram.com/p/Bst3RpiHKxY/?utm_source=ig_tumblr_share&igshid=17d30siz5q8at

[bone-lust]

BONELUST SCIENCE LESSON: Many people think that the spinal column and ribcage of a turtle/tortoise just runs through a turtle's shell. No, it is actually attached TO the top (carapace) of the shell. The carapace is the dorsal (back), convex part of the shell structure of a turtle, consisting of the animal's ribcage combined with dermal bone. The spine and ribs are fused to dermal plates beneath the skin which interlock to form a hard shell. Exterior to the skin the shell is covered by scutes, which are plates made of keratin that protect the shell from scrapes and bruises. _ The turtle shell is a highly complicated shield for the ventral and dorsal parts of turtles, tortoises and terrapins, completely enclosing all the vital organs of the turtle and in some cases even the head. It is constructed of modified bony elements such as the ribs, parts of the pelvis and other bones found in most reptiles. Therefore turtles have no backs. The bone of the shell consists of both skeletal and dermal bone, showing that the complete enclosure of the shell probably evolved by including dermal armor into the rib cage. _ The shell of the turtle is an important study, not just because of the obvious protection it provides for the animal, but also as an identification tool, in particular with fossils as the shell is one of the likely parts of a turtle to survive fossilization. Hence understanding the structure of the shell in living species gives us comparable material with fossils.🐢🐢🐢 _ #bonelustsciencelesson #turtleanatomy #turtleskeleton #tortoiseanatomy #tortoiseskeleton #tortoiseanatomy https://www.instagram.com/p/Bo6DeAiAt2E/?utm_source=ig_tumblr_share&igshid=12h3ukq6rqahi