No, they do not have a backbone and are considered to be invertebrates.
Cuttlefish is not a fish! It has no vertebrae and belongs to the class cephalopoda along with octopi and squid. As molluscs, they are more closely related to slugs and snails.
Cuttlefish is not a fish! It has no vertebrae and belongs to the class cephalopoda along with octopi and squid. As molluscs, they are more closely related to slugs and snails.
Vertebrae are divided into sections: the atlas and axis account for the first cervical vertebrae, of which there are 7 in total; there are 12 thoracic vertebrae, 7 lumbar vertebrae, 1 sacrum (5 separate vertebrae in a baby), and 1 coccyx (4 separate vertebrae in a baby).
Some animals that don't have vertebrae include insects (e.g., butterflies, ants), mollusks (e.g., snails, octopuses), and arachnids (e.g., spiders, scorpions). These animals have exoskeletons or hydrostatic skeletons in place of vertebral columns.
the thoracic spine is above the lumbar spine which means ALL thoracic vertebrae are superior to the lumbar vertebrae.
Apple snails are freshwater aquatic snails. Garden snails are land snails.Apple snails have lungs and gillsGarden snails have lungs onlyApple snails skin is thin and translucent (with slime)Garden snails skin is thick and leathery (with slime)All apple snails have two sets of antennaeGarden snails have species with one and two sets.
Vertebrates have vertebrae .
The five types of vertebra are the:cervical vertebrae (neck)thoracic vertebrae (chest)lumbar vertebrae (back)sacral (pelvis)coccyx (tailbone)
cervical vertebrae thoracic vertebrae. lumbar vertebrae
Vertebrae.
The vertebrae nearest the abdominal region are the thoracic vertebrae.
The vertebrae in the neck region are called cervical vertebrae. There are seven cervical vertebrae labeled C1 to C7, with C1 being closest to the skull and C7 being closest to the thoracic vertebrae.