submucosa
Beneath the lining
The submucosa is the layer of tissue lying beneath a mucous membrane.
In the digestive tract, it connects the inner lining to the muscular wall, containing blood vessels, nerves, and glands: The tumor had invaded the submucosa but not the muscle layer.
The term appears mainly in medical and anatomical contexts.
Tubes carrying circulating fluid
- lymphaticsImmune fluid transport system
- capillariesTiniest blood vessels
- arteriolesSmallest arterial vessels
- venulesSmallest vein branches
microcirculation · drainage · perfusion · immune cells · macrophages · plasma cells · lymphocytes · edema
Structural body protein
- fibroblastsCollagen-producing connective tissue cells
- connectiveSomething that links
- scaffoldingTemporary exterior work platform
- frameworkUnderlying support system
stroma · ground substance · glycoproteins · interstitial · basement membrane
Supportive biological matrix
- gastrointestinal tractDigestive organ system
- respiratory tractAir passage system
- muscularisMuscular layer of organ walls
- serosaFluid-secreting tissue layer
epithelium · esophageal · intestinal · colonic · gastric · bronchial
Process of taking in
- permeabilityAbility to transmit fluids
- diffusionPassive molecular spreading
- immune responseBody fighting foreign threats
- tissue repairBiological wound healing process
wound healing · fibrosis · inflammation · infiltration · distensibility · flexibility · accommodation · expansion
Secreting organs
- secretionSubstance released by glands
- salivaryOf spit-producing glands
- duodenalOf the first gut section
- bicarbonateAcid-neutralizing salt
lubrication · protection · exocrine · ducts · serous
Self-regulating without awareness
- parasympatheticNerve system promoting rest
- gangliaMasses of nerve tissue
- neuronsSignal-transmitting brain cells
- neurotransmittersChemical neural messengers
peristalsis · motility · sensory · reflexes · acetylcholine · neuropeptides
blood vessels
Tubes carrying circulating fluid
- lymphaticsImmune fluid transport system
- capillariesTiniest blood vessels
- arteriolesSmallest arterial vessels
venules · microcirculation · drainage · perfusion · immune cells · macrophages · plasma cells · lymphocytes · edema · inflammation
collagen
Structural body protein
- fibroblastsCollagen-producing connective tissue cells
- connectiveSomething that links
- scaffoldingTemporary exterior work platform
framework · stroma · ground substance · glycoproteins · interstitial · basement membrane
connective tissue
Supportive biological matrix
- gastrointestinal tractDigestive organ system
- respiratory tractAir passage system
- muscularisMuscular layer of organ walls
serosa · epithelium · esophageal · intestinal · colonic · gastric · bronchial
absorption
Process of taking in
- permeabilityAbility to transmit fluids
- diffusionPassive molecular spreading
- immune responseBody fighting foreign threats
tissue repair · wound healing · fibrosis · inflammation · infiltration · distensibility · flexibility · accommodation · expansion
glands
Secreting organs
- secretionSubstance released by glands
- salivaryOf spit-producing glands
- duodenalOf the first gut section
bicarbonate · lubrication · protection · exocrine · ducts · serous
autonomic
Self-regulating without awareness
- parasympatheticNerve system promoting rest
- gangliaMasses of nerve tissue
- neuronsSignal-transmitting brain cells
neurotransmitters · peristalsis · motility · sensory · reflexes · acetylcholine · neuropeptides
submucosaserosa
Fluid-secreting tissue layer
mucosa · epithelium · outer layer · outermost layer · intima
mucus, mucous, mucosa, mucoid, mucin, mucosal, mucosae, mucolytic