saccule
Inner ear chamber
A saccule is a small sac or pouch-like structure in the body.
In anatomy, the saccule is one of two fluid-filled chambers in the inner ear (alongside the utricle) that helps detect linear acceleration and gravity—essential for balance.
The term appears in medical and biological contexts for various small saclike cavities.
Inner ear balance crystal
- maculaRetinal region for acuity
- mechanoreceptorSensory cell for pressure
- calcium carbonateMineral in shells and marble
- vestibular systemSensory apparatus for spatial orientation
Balance and hearing center
- cochleaSpiral hearing organ
- oval windowMiddle ear opening
- round windowCircular pane in wall
- vestibuleEnclosed space between doors
State of balance
- spatial orientationAwareness of position in space
- linear motionDisplacement along a line
- head positionSkull's orientation in space
- verticalityState of being upright
Subcellular functional unit
- vacuoleCell's storage compartment
- cystFluid-filled tissue sac
- bladderOrgan holding urine
- pouchSmall flexible bag
fluid-filled · invertebrate · fish · amphibian · vertebrate · sensory organ
otolith
Inner ear balance crystal
- maculaRetinal region for acuity
- mechanoreceptorSensory cell for pressure
- calcium carbonateMineral in shells and marble
inner ear
Balance and hearing center
- cochleaSpiral hearing organ
- oval windowMiddle ear opening
- round windowCircular pane in wall
equilibrium
State of balance
- spatial orientationAwareness of position in space
- linear motionDisplacement along a line
- head positionSkull's orientation in space
verticality · gravitational pull · body position · motion detection
organelle
Subcellular functional unit
pouch · fluid-filled · invertebrate · fish · amphibian · vertebrate · sensory organ