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AtlasUdderFIG. 05Applied12 min

Mastitis pathways

Almost every intramammary infection walks in through the teat canal. See contagious versus environmental paths before you blame the tank.

ShareMastitis pathways
MAMMARY QUARTER · SAGITTAL TEACHING PLATESCHEMATIC QUARTER · NOT A SPECIMENVentral body wallSecretory tissueAlveoli → duct treeGland cisternAnnular foldTeat cisternTeat canalSphincter + keratinTwo reservoirsCONTAGIOUSInfected gland → linerENVIRONMENTALBedding / manureMerck + NMC pathOne quarter shown. Almost every infection enters through the teat canal.

Numbers

MeasureValueSpread · alarmWhy it matters
Usual entry routeMerck Veterinary ManualTeat canalMerck: with few exceptions, organisms enter through the teat canal. Teach the door, not a mysterious blood-borne story.

Spot it

  1. MeaningThe physical gate is damaged. New infection risk rises even if dip looks fine.

    Next checkHave the machine checked. Watch unit-on time. Score ends again after the fix.

Field notes on this focus

  1. Note 01The teat end is the gateA cracked or over-milked teat end is an open door, even with a pretty dip bottle.3 min · 2026-09-07

Quick check

Q 01 / 01

How do most mastitis organisms enter the gland?

Sources

Plate credit

System figures are educational plates drawn from public-domain veterinary teaching anatomy (udder, claw, uterus, and housing relationships). They are not scanned specimens. Educational only.

Not a veterinary diagnosis, prescription, or ration formula.