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mLine 319:
Line 319: − *The shape of the pinna varies between breeds and species. + + + + +
→Species Differences
*'''The Cochlea''': the spiral has 3 turns in carnivores, 2.5 turns in horses, 4 turns in the pig, and 3.5 turns in ruminants.
*'''The Cochlea''': the spiral has 3 turns in carnivores, 2.5 turns in horses, 4 turns in the pig, and 3.5 turns in ruminants.
*'''Fish''': to detect high frequency sound, some fish use the swim bladder as an acoustic detecror. It is connected to the '''lagena''' (the stumpy piscine cochlea) by three ''Weberian'' bones. These are derived from vertebrae.
*'''Fish''': to detect high frequency sound, some fish use the swim bladder as an acoustic detecror. It is connected to the '''lagena''' (the stumpy piscine cochlea) by three ''Weberian'' bones. These are derived from vertebrae.
[[image: Rabbit ears.jpg|thumb|250px|left|Two rabbits: one with wild-type erect pinnae, the other with pendulous pinnae for comparison]]
[[image: Rabbit ears.jpg|thumb|250px|left|Two rabbits: one with wild-type erect pinnae, the other with pendulous pinnae for comparison]]
[[Image:Equine Guttural Pouch.jpg|thumb|right|150px|Equine Guttural Pouch - Copyright David Bainbridge]]
*The [[Guttural Pouches - Anatomy & Physiology|guttural pouch]] is an anatomical structure that is only found in the horse (and other perissodactyla).