The external oblique fascia was then incised, and the incision was lengthened in the direction of the fibers using Metzenbaum scissors.

no verbs??

Every complete thought must have a subject and a verb.

The verbs are "was ... incised" and "was lengthened.".
"was incised" is the action that is performed on the "external oblique fascia," and "was lengthened" is the action performed on the incision.

"using" is not a verb because it describes how.

http://www.chompchomp.com/menu.htm

Click on the word Terms to find good definitions and examples of different parts of speech and other grammatical terms.
Click on Exercises to practice.

http://www.lousywriter.com/
Don't let the name of this website get to you! It's an excellent site, both for grammar and for writing. Click on the terms that are linked just above the words Stop. Writing. Junk. You'll find additional explanations and examples.

http://grammar.ccc.commnet.edu/grammar/index2.htm
Choose the topic you need to look up explanations and examples.

The external oblique fascia was incised. The incision was lengthened in the direction of the fibers using Metzenbaum scissors. The verbs used in these sentences are "was incised" and "was lengthened".

The sentence you provided is written in passive voice, where the subject is not performing the action. In this case, the action being described is the incision of the external oblique fascia.

To identify the verbs in this sentence, we can rephrase it in active voice. Active voice emphasizes the person or thing performing the action. The sentence would then become:

"Then, the surgeon incised the external oblique fascia, and they lengthened the incision in the direction of the fibers using Metzenbaum scissors."

In this active voice rephrasing, the verbs become clear:

1. "incised" - this verb describes the action of making a cut or surgical incision.
2. "lengthened" - this verb describes the action of making the incision longer.
3. "using" - this is a verb used to indicate the tool or instrument used to perform the action.

In summary, the verbs in the sentence involve the actions of making an incision and lengthening it, both performed by the surgeon using Metzenbaum scissors.