8.1
an internal or external framework of bone, cartilage, or other rigid material supporting or containing the body of an animal or plant.
Skeleton
often called "cold-blooded" animals, are creatures that regulate their body temperature by absorbing heat from their surroundings, like the sun or a warm rock.
Ectotherms
hairless skin, with no feathers or scales.
Bare skin
a series of vertebrae extending from the skull to the small of the back, enclosingthe spinal cord and providing support for the thorax and abdomen
backbone /spine
operculum
an arm or leg of a person or four-legged animal, sometimes a wing.
Limbs
a long, protected bundle of nerves that runs down your back, a connection between your brain and your body. It carries signals for sensations, movement, and keeps you breathing, allowing your brain to control your body.
Spinal cord
a sensory system that detects vibrations, water pressure changes, and water flow, allowing them to sense movement in the water and potentially detect predators or prey.
Lateral line
simple, sac-like structures that are a crucial part of their respiratory system
lungs
something is balanced and looks the same on both sides, like a mirror image.
Bilateral symmetry
the paired respiratory organ of fish and some amphibians, by which oxygen is extracted from water
Gills
an order of tailless amphibians that comprises the frogs and toads.
Anura
the thin layer of tissue forming the natural outer covering of the body of a person or animal.
skin
difference between Cartilaginous fish and Bony fish
cartilaginous fish have skeletons made of cartilage, while bony fish have skeletons made of bone
an order of amphibians that comprises the newts and salamanders, which retain the tail as adults.
Urodela