The pectineus muscle (from the Latin word pecten, meaning comb) is a flat, quadrangular muscle, situated at the anterior part of the upper and medial aspect of the thigh.

It can be classified in the medial compartment of thigh (when the function is emphasized) or the anterior compartment of thigh (when the nerve is emphasized).

It arises from the pectineal line of the pubis and to a slight extent from the surface of bone in front of it, between the iliopectineal eminence and tubercle of the pubis, and from the fascia covering the anterior surface of the muscle; the fibers pass downward, backward, and lateralward, to be inserted into the pectineal line of the femur which leads from the lesser trochanter to the linea aspera.

The pectineus is in relation by its anterior surface with the pubic portion of the fascia lata, which separates it from the femoral artery and vein and internal saphenous vein, and lower down with the profunda artery.

By its posterior surface with the capsule of the hip-joint, and with the obturator externus and adductor brevis, the obturator artery and vein being interposed.

The Very Reverend Richard Damian Finn, OP (born 1963) is Regent of Blackfriars, Oxford.

Richard Finn was educated at St Catharine's College, Cambridge (BA English, MA). He joined the Order of Preachers in 1985 and was ordained a Priest in the Roman Catholic Church in 1990.

He read Classical Moderations and Literae Humaniores at Corpus Christi College, Oxford, where he was awarded the Haigh Prize. After a period as Chaplain to the University of Leicester he became Assistant Chaplain at Fisher House, Cambridge. He completed a MPhil at Jesus College, Cambridge. Returning to Corpus, he studied for a DPhil, producing a thesis entitled The Christian promotion and practice of almsgiving in the later Roman Empire: (313-450), which was supervised by Averil Cameron and Peter Garnsey. It formed the basis of his book Almsgiving in the later Roman Empire: Christian promotion and practice (313-450) (Oxford; New York: Oxford University Press, 2006).

He became Regent of Blackfriars, Oxford in September 2004, and is Chair of the advisory board of its Las Casas Institute on ethics, governance and social justice.