Fish and Fishing Flashcards
Vertebral Column
a series of approximately 33 bones called vertebrae, which are separated by intervertebral discs. The column can be divided into five different regions, with each region characterised by a different vertebral structure.
Neural crest
a transient embryonic structure in vertebrates that gives rise to most of the peripheral nervous system and to several non-neural cell types, including smooth muscle cells of the cardiovascular system, pigment cells in the skin, and craniofacial bones, cartilage, and connective tissue.
Fin
A fin is a thin component or appendage attached to a larger body or structure.
Scale
each of the small, thin horny or bony plates protecting the skin of fish and reptiles, typically overlapping one another
Operculum
a series of bones found in bony fish that serves as a facial support structure and a protective covering for the gills; it is also used for respiration and feeding
Atrium
each of the two upper cavities of the heart from which blood is passed to the ventricles
Ventricle
each of the two main chambers of the heart, left and right.
each of the four connected fluid-filled cavities in the center of the brain
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
a gas-filled sac present in the body of many bony fishes, used to maintain and control buoyancy.
Jawless fish
Jaws are absent.
Paired fins are generally absent.
Early species had heavy bony scales and plates in their skin, but these are not present in living species.
In most cases the skeleton is cartilaginous.
The embryonic notochord persists in the adult.
Seven or more paired gill pouches are present.
Cartilaginous fish
Paired fins. Paired nostrils. Scales. Two-chambered hearts. Skeletons made of cartilage rather than bone. Cartilage is supportive tissue that does not have as much calcium as bones, which makes bones rigid. Cartilage is softer and more flexible than bone.
Bony fish
Bony fish are members of the class osteichthyes, and are defined by their calcified skeleton, hinged jaw, gill arches, gill filaments, and gill rakers. They also have an operculum for pumping water across the gills and swim bladders to control buoyancy, as well as mucous-lined scales
Bowfin/Dogfish
has flat head with tube-like nostrils and strong jaws filled with sharp, cone-shaped teeth. Unlike other species of fish, bowfin uses gas-bladder to maintain buoyancy and to facilitate breathing of the fresh air