Yes, amphibian skeletal structure includes joints for limbs and other body parts, just like we have.
All arthropods have an exoskeleton, segmented body, and jointed legs.
thorax
No.
That is correct. A tarantula is an invertebrate, meaning it has no backbone and has an exoskeleton, meaning the support system for its body is on the outside of its body. The legs are jointed - a characteristic of an arthropod.
Not all living things with jointed body parts belong together, as jointed appendages are a characteristic primarily found in arthropods, such as insects, arachnids, and crustaceans, as well as in some vertebrates like mammals. While these organisms share the trait of jointed body parts, they belong to different taxonomic groups and have diverse evolutionary lineages. Therefore, jointed body parts alone do not indicate a close genetic or evolutionary relationship among all living things.
Annelids, which include earthworms and leeches, are characterized by their segmented bodies. Each segment contains a series of structures and muscles that allow for movement. They do not have jointed appendages like arthropods; instead, their body segments are flexible and allow for coordinated movement through contraction and relaxation of muscles. Therefore, annelids have non-jointed body segments rather than jointed appendages.
There is such thing as double jointed. The term double jointed is often used to describe someone with hypermobility. This allows the body to move in ways that are usually not normal for most people.
Not all living things with jointed body parts belong together in the same classification. While many organisms with jointed appendages, such as insects, arachnids, and crustaceans, belong to the phylum Arthropoda, there are also other organisms with jointed structures that may not be closely related. Therefore, jointed body parts can be a characteristic of certain groups, but they do not universally indicate a shared evolutionary lineage among all living things.
feet
yes
Amphibians have warm body temperature because they are cold blooded meaning they have to be in the sun a lot.
Yes, spiders have jointed legs, making them arthropods, and have the head and thorax connected as one body part called a cephalothorax. The other body part is the abdomen.