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Box turtles contain a connective tissue hinge on their plastron that allows them to withdraw completely into their shell. The pectoral and pelvic girdles are within the ribcage rather than outside of it as in other animals.
Jun 28, 2024 · Within the rib cage are the pectoral and pelvic girdles, parts of the skeleton that have adapted to secure fins or limbs to the skeletal structure [2]. The limb bones are modified so they can be adapted for the shell. The auditory system is made up of the middle and inner ear.
Jan 1, 2024 · Limb bones: As mentioned earlier, turtles have four limbs, each with bones. They include the humerus (forelimb), radius, ulna, femur (hindlimb), tibia and fibula. All these bones provide support, mobility, and power for digging.
The shell is the most recognizable feature of a turtle. It is made up of two parts: the upper part, called the carapace, and the lower part, called the plastron. The shell is made of bone and is covered by a layer of keratin, the same material that makes up human hair and nails.
Dec 1, 2011 · The turtle shell consists of dorsal and ventral parts: the carapace and plastron, respectively. The basic structure of the carapace comprises vertebrae and ribs. The pectoral girdle of turtles sits inside the carapace or the rib cage, in striking contrast to the body plan of other tetrapods.
Orient vertebrae and identify the major types of vertebral centra. Study the morphology of ribs, sternal elements, and hyoid bones across taxa. Recognize the elements of the turtle shell in context and the major carapace elements in isolation.
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Jan 20, 2024 · Turtle Anatomy. Does a Turtle Have a Backbone? (A-to-Z About Turtles’ Backbone) By Luke Markovina January 20, 2024. Have a look at your pet turtle. What sets your pet friend apart from other animals? Their hard, bony shell. But where in the turtle’s body is the shell connected…. Read More.