Fish Flashcards
Vertebral Column
Another term for spinal column
Neural crest
temporary group of cells unique to vertebrates that arise from the embryonic ectoderm cell layer, and in turn give rise to a diverse cell lineage – including melanocytes, craniofacial cartilage and bone, smooth muscle, peripheral and enteric neurons and glia.
Fin
flattened appendage on various parts of the body of many aquatic vertebrates and some invertebrates, including fish and cetaceans, used for propelling, steering, and balancing.
Scale
each of the small, thin horny or bony plates protecting the skin of fish and reptiles, typically overlapping one another.
Operculum
technical term for gill cover
Atrium
two upper cavities of the heart from which blood is passed to the ventricles.
Ventricle
a hollow part or cavity in an organ, in particular.
each of the two main chambers of the heart, left and right.
Nephron
each of the functional units in the kidney, consisting of a glomerulus and its associated tubule, through which the glomerular filtrate passes before emerging as urine.
Lateral line
a visible line along the side of a fish consisting of a series of sense organs that detect pressure and vibration.
Spawning
release or deposit eggs.
Swim bladder
an internal gas-filled organ that contributes to the ability of a fish to control its buoyancy, and thus to stay at the current water depth without having to waste energy in swimming.
Jawless fish
marine and freshwater fishes lacking a jaw and paired appendages,
Cartilaginious fish
jawed vertebrates with paired fins, paired nares, scales, a heart with its chambers in series, and skeletons made of cartilage rather than bone.
Bony fish
fish of a large class distinguished by a skeleton of bone, and comprising the majority of modern fishes.
Devonian period
geologic period and system of the Paleozoic Era spanning from the end of the Silurian Period