Asked by: Ejaz Jevlakov
pets fish and aquariums

What is a Protrusible jaw?

Last Updated: 26th January, 2020

protrusible mouth (protractile mouth) Infish, a structural arrangement of the jaws that enables theanimal to protrude (extend) or withdraw the mouth at will.When fully protruded, the cavity of the mouth is enlarged toform a funnel-like space facilitating the uptake offood.

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Likewise, people ask, does a fish have a jaw?

Cartilaginous fishes, such as sharks and rays,have one set of oral jaws made mainly of cartilage.They do not have pharyngeal jaws. Generallyjaws are articulated and oppose vertically, comprising anupper jaw and a lower jaw and can bearnumerous ordered teeth.

Also, what is a hinged jaw? The definition of jaw is the two hingedbones that frame the mouth and hold the teeth. An example of thejaw is the hinged body part at the bottom of the faceused for chewing.

Similarly, what is a Subterminal mouth?

subterminal mouth. (english) Mouthposterior to the tip of the snout. Sometimes also referred to asinferior mouth.

Is shark jaw bone?

Sharks have a skeleton that is made out ofcartilage and connective tissue, making them different from bonyfish and land vertebrates. Cartilage is found in our ears and nose.It is flexible, durable, and has about half the density ofbone. Shark teeth are attached to the jaw bysoft tissue and are easily lost.

Related Question Answers

Anatolio Kinzelmann


Do you have one or two jaws?

The arched lower part of the maxilla contains the upperteeth. Inside the body of the bone is the large maxillary sinus. Inthe human fetus and infant both the upper and lower jaws havetwo halves; these fuse at the midline a few months afterbirth.

Emmanuel Swamy


Where is jaw located?

The temporomandibular joint (TMJ) is the name of thejoint located on either side of your head, just in front ofyour ears. These joints connect your mandible (jawbone) to yourtemporal bone (skull).

Cosimo De Plaza


How do you get a jawline?

To get a chiseled jawline, chew gumthroughout the day to help tone your jaw muscles. You can also dojaw exercises like clenching your jaw or puckering your lips for 10seconds at a time. Also, try to avoid foods that have a lot of saltin them since salt can make your face look bloated and lesschiseled.

Trandafira Abbott


Do all fish have teeth?

All fish have teeth.

AriƱe Lubben


How does the jaw work?

How does the human jaw work? Two jointsand several jaw muscles make it possible to open and closethe mouth. They work together when you chew, speak orswallow. They include muscles and ligaments, as well as thejaw bone -- the mandible (lower jaw) with twojoints called the temporomandibular joints or "TMJ."

Mei Firme


Are sharks Aganthan fish or Gnathostomes?

Among Recent vertebrates, the gnathostomesinclude sharks, rays, chimaeras, ray-finned fishes,lobe-finned fishes and land vertebrates. Extantgnathostomes fall into two major clades, the Chondrichthyesand Osteichthyes.

Jare Masustegui


Do fish have brains?

Fish typically have quite smallbrains relative to body size compared with othervertebrates, typically one-fifteenth the brain mass of asimilarly sized bird or mammal. The cerebellum of cartilaginous andbony fishes is large and complex.

Albar Corvinos


What type of teeth do fish have?

The shape is usually conical, but in hunting fishesteeth are sharp, resembling to canines. Fishes which eatalgae have incisive-alike teeth: flat and suitable torip algae and organisms on the seabed. Some other species possessmolar teeth, which are ideal for crushing the shells ofcrustaceans and mollusks.

Mareike Falcorena


What type of mouth does a shark have?

Most species of sharks have five pairs of gillslits on each side of their head, but a few have six orseven pairs. The gills are crucial to a sharks breathingsystem. By opening its mouth, water is drawn into theshark. The open mouth gives the appearance of a smilein many sharks.

Marene Diefenthal


What kind of fish have whiskers?

Fish that have barbels include thecatfish, the carp, the goatfish, the hagfish, the sturgeon, thezebrafish, the black dragonfish and some species of shark such asthe sawshark. Barbels house the taste buds of suchfish and are used to search for food in murkywater.

Rigel Olayz


What do fish eat in the ocean?

Some fish eat plant life. They may scrape algaeoff rocks or eat plants that grow in the ocean orsea. Some fish, called predators, prey on otherfish and animals.

Edda Yukhnev


Where is the ear located in a fish?

Fish have two ways in which they can hear; viaotoliths, or a lateral line. Otoliths are inner ear bones ina fish's skull. Tiny hairs called cilia are locatedon the otolith which can be stimulated by vibrations in thewater.

Soukayna Haynes


What is the function of eye in fish?

Fish eyes contain many of the same components ashuman eyes, but they are structured and used differently.Fish have a cornea or outer covering, a lens for“taking a picture,” an iris for adjusting light, aretina containing light-sensitive cells and an optic nerve fortranslating the picture to the brain.