More examples. The principal aim of this meeting is to reach a decision that we all agree on. The diaphragm is the principal muscle of respiration. I would like to earn more, but this isn't my principal reason for leaving the job. He can't give up teaching, it's his principal source of income.
Quadriceps femoris. The quadriceps femoris is a group of muscles located in the front of the thigh. The Latin translation of quadriceps is four headed, as the group contains four separate muscles: the vastus lateralis, vastus medialis, vastus intermedius, and the rectus femoris.uadriceps femoris. The quadriceps femoris is a group of muscles located in the front of the thigh. The Latin translation of quadriceps is four headed, as the group contains four separate muscles: the vastus lateralis, vastus medialis, vastus intermedius, and the rectus femoris.
Answer   That is actually what that muscle group is called, to the best of my knowledge.   Answer   The four muscles that make up the quadriceps group are:   *â¦ Vastus Medialis (Internus)  * Vastus Intermedius  * Vastus Lateralis (Externus)  * Rectus Femoris.