tergal

Definitions

Examples

• In the basi-carinal corner of the valve there are often crests for the attachment of the tergal depressor muscle.

• The angles are called from the adjoining margins, as basi-tergal, &c.; the upper angle being the apex.

• Scutum.This valve is almost triangular, with the basi-tergal corner more or less rounded off.

• The degree to which the basi-tergal corner of the valve is rounded off varies much even in var.

• Scutum, rather narrow, with the basi-tergal corner much rounded off; externally the lines of growth are little prominent.