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Multiple Choice

The central groove of the frog is called what term?

The central sulcus is the term for a groove that runs along the midline of a structure. For the frog, this central groove runs down the center of the frog, dividing it into two halves. Sulcus simply means groove, so central sulcus specifies both the nature of the feature (a groove) and its location (central). The other descriptors describe circular or side-oriented grooves, which don’t match this lengthwise, midline feature. So the central sulcus is the correct term.

The central sulcus is the term for a groove that runs along the midline of a structure. For the frog, this central groove runs down the center of the frog, dividing it into two halves. Sulcus simply means groove, so central sulcus specifies both the nature of the feature (a groove) and its location (central). The other descriptors describe circular or side-oriented grooves, which don’t match this lengthwise, midline feature. So the central sulcus is the correct term.