pinnas
Outer ear parts
Pinnas is the plural of pinna, the visible outer part of the ear—the curved cartilage that funnels sound into the ear canal.
In botany, pinnas are the individual leaflets of a compound leaf, especially on ferns and palms, arranged along a central stem like barbs on a feather.
External ear or atrial appendage
- earAuditory organ
- outer earVisible hearing apparatus
- earflapHat extension covering lobes
- helixSpiraling three-dimensional curve
antihelix · tragus · lobule · cartilage · concha · earlobe · auditory · acoustic
Single-sheet printed handout
- compound leafLeaf with distinct leaflets
- frondLarge, segmented plant blade
- fernSpore-spreading vascular plant
- palmHand's flat interior
rachis · foliage · blade · midrib · acacia · mimosa · tropical plant · cycad
Upper body limb
- appendageProjecting body part
- echinodermSpiny-skinned marine invertebrate
- branchingSplitting into separate directions
- filter feedingExtracting nutrients from water
plankton · reef · marine biology · ossicle · tentacle · invertebrate · tropical waters · fossil
auricle
External ear or atrial appendage
helix · antihelix · tragus · lobule · cartilage · concha · earlobe · auditory · acoustic · hearing
leaflet
Single-sheet printed handout
- compound leafLeaf with distinct leaflets
- frondLarge, segmented plant blade
- fernSpore-spreading vascular plant
palm · rachis · foliage · blade · midrib · acacia · mimosa · tropical plant · cycad · featherlike
arm
Upper body limb
- appendageProjecting body part
- echinodermSpiny-skinned marine invertebrate
- branchingSplitting into separate directions
filter feeding · plankton · reef · marine biology · ossicle · tentacle · invertebrate · tropical waters · fossil · calyx
pinnaseardrums
Vibrating membranes enabling hearing
cochleae · inner ears · auditory nerves · ossicles · middle ears