swim bladder - translation to arabic
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swim bladder - translation to arabic

GAS-FILLED ORGAN THAT CONTRIBUTES TO THE ABILITY OF A FISH TO CONTROL ITS BUOYANCY
Air bladder; Fish maw; Swimbladder; Swim bladders; Swim-bladder; Physoclistic; Pneumatic duct; Gas bladder; Physoclistous; Swimming bladder; Air-bladder
  • bleak]]<br />S: anterior, S': posterior portion of the air bladder<br />œ: œsophagus; l: air passage of the air bladder}}
  • How gas is pumped into the swim bladder using [[counter-current exchange]].
  • Swim bladder from a bony (teleost) fish}}
  • The [[West African lungfish]] possesses a lung homologous to swim bladders
  • rudd]]}}

swim bladder         
مثانة هوائية
air bladder         
المثانة الهوائية
intravesical         
  • Cross-section of the bladder showing a cancer within it. When a cancer occurs it is most likely to be a [[transitional cell carcinoma]].
  • A [[diverticulum]] of the bladder
  • Male and female urinary bladders in lateral cross-section
  • Bladder location and associated structures in the male
  • Calcifications on bladder wall caused by urinary [[schistosomiasis]]
  • Urinary bladder (black butterfly-like shape) and hyperplastic [[prostate]] (BPH) visualized by [[medical ultrasound]]
INTERNAL ORGAN IN MOST ANIMALS
The bladder; Uvula of urinary bladder; Uvula vesicae; Bladder Disease; Bladder (kidney); Fundus of the bladder; Fundus of the urinary bladder; Apex of urinary bladder; Vertex (urinary bladder); Neck of urinary bladder; Intravesical; Urocyst; Uvula of bladder; Bladder neck; Vesica urinaria; Apex vesicae urinariae; Cervix vesicae urinariae; Uvula vesicae urinariae; Vertex of urinary bladder; Fundus of urinary bladder; Neck of the bladder; Neck of the urinary bladder; Urinary bladders; Uvula of the bladder; Uvula of the urinary bladder; Apex of the urinary bladder; Apex of the bladder; Apex of bladder; Vertex of the urinary bladder; Vertex of the bladder; Vertex of bladder; Human bladder; Human urinary bladder; Full bladder; Urinary bladder
داخِلَ المَثانَة

Definition

swim bladder
¦ noun a gas-filled sac in a fish's body, used to maintain buoyancy.

Wikipedia

Swim bladder

The swim bladder, gas bladder, fish maw, or air bladder is an internal gas-filled organ that contributes to the ability of many bony fish (but not cartilaginous fish) to control their buoyancy, and thus to stay at their current water depth without having to expend energy in swimming. Also, the dorsal position of the swim bladder means the center of mass is below the center of volume, allowing it to act as a stabilizing agent. Additionally, the swim bladder functions as a resonating chamber, to produce or receive sound.

The swim bladder is evolutionarily homologous to the lungs. Charles Darwin remarked upon this in On the Origin of Species. Darwin reasoned that the lung in air-breathing vertebrates had derived from a more primitive swim bladder.

In the embryonic stages, some species, such as redlip blenny, have lost the swim bladder again, mostly bottom dwellers like the weather fish. Other fish—like the opah and the pomfret—use their pectoral fins to swim and balance the weight of the head to keep a horizontal position. The normally bottom dwelling sea robin can use their pectoral fins to produce lift while swimming.

The gas/tissue interface at the swim bladder produces a strong reflection of sound, which is used in sonar equipment to find fish.

Cartilaginous fish, such as sharks and rays, do not have swim bladders. Some of them can control their depth only by swimming (using dynamic lift); others store fats or oils with density less than that of seawater to produce a neutral or near neutral buoyancy, which does not change with depth.