Osmoregulation in fresh-waterHydra

Mouth Function Determines the Shape Oscillation Pattern in Regenerating Hydra Tissue Spheres

“…As a freshwater animal, Hydra experiences a continuous inflow of water from the medium, through the tissues and into the gastric cavity (31,32). The resulting internal pressure is periodically relieved by opening of the mouth (33).…”

Mouth Function Determines the Shape Oscillation Pattern in Regenerating Hydra Tissue Spheres

“…As a freshwater animal, Hydra experiences a continuous inflow of water from the medium, through the tissues and into the gastric cavity (31,32). The resulting internal pressure is periodically relieved by opening of the mouth (33).…”

Piezo Proteins, Mechano Reception and Behaviour in Hydra

“…Using speci c ionic transport between cells and body compartments, hydroids can produce and accumulate an hypoosmotic uid inside the GVC. This uid will be eventually eliminated throughout the mouth by these sudden shortenings allowing the excretion of the water excess [15,43,44,45]. Indeed, both, the water accumulation in the GVC, and the rate of body contractions, are dependent on the osmolarity, and Na + concentration [15].…”

A complete biomechanical model of Hydra contractile behaviors, from neural drive to muscle to movement

“…We have not modeled direct feedback from the body to generation of neural activity. Many previous studies have postulated that contraction bursts play a role in osmoregulation ( 25 , 40 , 42 , 43 , 45 , 119 ). EM studies show that intercellular vacuoles in Hydra tissue may contribute to hyposmotic fluid formation, so that contraction bursts may regulate the osmotic pressure by periodically squeezing the fluid from vacuoles to the enteron ( 44 ).…”

Mouth Function Determines the Shape Oscillation Pattern in Regenerating Hydra Tissue Spheres

“…As a freshwater animal, Hydra experiences a continuous inflow of water from the medium, through the tissues and into the gastric cavity (31,32). The resulting internal pressure is periodically relieved by opening of the mouth (33).…”

Piezo Proteins, Mechano Reception and Behaviour in Hydra

“…Using speci c ionic transport between cells and body compartments, hydroids can produce and accumulate an hypoosmotic uid inside the GVC. This uid will be eventually eliminated throughout the mouth by these sudden shortenings allowing the excretion of the water excess [15,43,44,45]. Indeed, both, the water accumulation in the GVC, and the rate of body contractions, are dependent on the osmolarity, and Na + concentration [15].…”

A complete biomechanical model of Hydra contractile behaviors, from neural drive to muscle to movement

“…We have not modeled direct feedback from the body to generation of neural activity. Many previous studies have postulated that contraction bursts play a role in osmoregulation ( 25 , 40 , 42 , 43 , 45 , 119 ). EM studies show that intercellular vacuoles in Hydra tissue may contribute to hyposmotic fluid formation, so that contraction bursts may regulate the osmotic pressure by periodically squeezing the fluid from vacuoles to the enteron ( 44 ).…”

Mouth Function Determines the Shape Oscillation Pattern in Regenerating Hydra Tissue Spheres

“…As a freshwater animal, Hydra experiences a continuous inflow of water from the medium, through the tissues and into the gastric cavity (31,32). The resulting internal pressure is periodically relieved by opening of the mouth (33).…”

Piezo Proteins, Mechano Reception and Behaviour in Hydra

“…Using speci c ionic transport between cells and body compartments, hydroids can produce and accumulate an hypoosmotic uid inside the GVC. This uid will be eventually eliminated throughout the mouth by these sudden shortenings allowing the excretion of the water excess [15,43,44,45]. Indeed, both, the water accumulation in the GVC, and the rate of body contractions, are dependent on the osmolarity, and Na + concentration [15].…”

A complete biomechanical model of Hydra contractile behaviors, from neural drive to muscle to movement

“…We have not modeled direct feedback from the body to generation of neural activity. Many previous studies have postulated that contraction bursts play a role in osmoregulation ( 25 , 40 , 42 , 43 , 45 , 119 ). EM studies show that intercellular vacuoles in Hydra tissue may contribute to hyposmotic fluid formation, so that contraction bursts may regulate the osmotic pressure by periodically squeezing the fluid from vacuoles to the enteron ( 44 ).…”