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Internal anatomy of a turtle: reptile
with an oval shell and a horned beak. It has a very short tail and four
short legs, and moves very slowly. Trachea: the windpipe, which connects the larynx and bronchi
of the tortoise. Lung: respiratory organ of the tortoise. Stomach: part of the digestive tract of the tortoise between
the esophagus and the intestine. Pancreas: gland in the tortoise that produces digestive enzymes. Rectum: final part of the tortoise's digestive tract. Anus: outlet of the tortoise's digestive tract. Bladder: pocket in which urine collects before it is evacuated. Ovary: egg-producing reproductive gland. Intestine: part of the digestive tract of the tortoise after
the stomach. Liver: bile-producing digestive gland. Heart: blood-pumping organ of the tortoise. Esophagus: part of the digestive tract of a tortoise between
the mouth and the stomach.
Photo :
EN : Turtles
FR : Tortues
ES : Tortugas
Turtles are reptiles of the Order Testudines
(all living turtles belong to the crown group Chelonia), most of whose
body is shielded by a special bony or cartilaginous shell developed from
their ribs. The Order Testudines includes both extant (living) and extinct
species. The earliest known turtles date from 215 million years ago, making
turtles one of the oldest reptile groups and a more ancient group than
lizards and snakes. About 300 species are alive today, and some are highly
endangered. Turtles cannot breathe in water, but they can hold their breath
for various periods of time. Like other reptiles, turtles are poikilothermic
or "of varying temperature". Like other amniotes (reptiles,
dinosaurs, birds, and mammals), they breathe air and do not lay eggs underwater,
although many species live in or around water. The largest turtles are
aquatic.
Animation : Turtles vs Sharks
Thanks to YouTube for allowing us to watch this video.