Arthropods are invertabrates (no backbone) which have segmented bodies and limbs. However, some arthropods, such as insects, have 3 body segments. Chelicerata - a group which includes Spiders - have 2 segments, the cephalothorax and the abdomen.
a backbone eg. horse and invertebrates have no backbone
The human torso is the whole human body excluding the head, neck, and limbs.
Body parts that are reduced in size with no apparent function would be vestigial limbs. Evolution could be at the root of the development of vestigial limbs. A good example would be a T-Rex with his tiny arms.
Segmentation
because they move their body parts freely
A Jellyfish
the human body is divided by 3 parts they are: head,truck and limbs
Legs, limbs.
Proprioception
Yes people often have their appendix or tonsils or even one kidney removed. People can also get by with limbs or parts of limbs removed.
The scientific names for cat body parts are the same in general anatomy. Cats have a cranium, limbs and abdomens.
Limbs are extended parts of the body, such as arms, legs, hands, feet, etc.
The human torso is the whole human body excluding the head, neck, and limbs.
a backbone eg. horse and invertebrates have no backbone
flippers,mouth,eyes,tail,backbone,lips
The backbone holds other body organs while the skin covers all body parts.
newts are capable of regenerating body parts like limbs,eye lenses e.t.c.starfishes are also capable of regeneration