stomas
Plant breathing holes
Stomas is the plural of stoma, an opening in the body.
In biology, stomas (or stomata) are the tiny pores on plant leaves that allow gas exchange—carbon dioxide in, oxygen out.
In medicine, a stoma is a surgically created opening, typically in the abdomen, that allows waste to exit the body when normal function is impaired.
The surgeon created a stoma for the colostomy bag.
The plant's stomas close during drought to conserve water.
Botanical water vapor release
- epidermisOutermost tissue layer
- gas exchangeTransfer of respiratory molecules
- water vaporH₂O in gaseous state
- mesophyllPhotosynthetic tissue in leaves
cuticle · leaf · osmosis · xerophytes · photosynthesis · chloroplasts · stomatal conductance · open
Pulmonary gas exchange
- tracheaRespiratory airway tube
- airwayPassage for breath
- spiracleExternal respiratory aperture
- gas exchangeTransfer of respiratory molecules
oxygen · carbon dioxide · ventilation · invertebrate · exoskeleton · diffusion · book lungs
transpiration
Botanical water vapor release
- epidermisOutermost tissue layer
- gas exchangeTransfer of respiratory molecules
- water vaporH₂O in gaseous state
mesophyll · cuticle · leaf · osmosis · xerophytes · photosynthesis · chloroplasts · stomatal conductance · open · closed
breathing
Pulmonary gas exchange
gas exchange · oxygen · carbon dioxide · ventilation · invertebrate · exoskeleton · diffusion · book lungs
appliance
Powered household device
irrigation · reversal · mucosa · prolapse · retraction · stenosis · hernia · adhesive · discharge · wound care