medial pterygoid muscle n.
A muscle with origin from the pterygoid fossa of the sphenoid bone and the tuberosity of the maxilla, with insertion into the medial surface of the mandible, with nerve supply from the medial pterygoid branch of the mandibular division of the trigeminal nerve, and whose action raises the mandible and closes the jaw.
- Medial rectus muscle
medial rectus muscle n. A muscle with origin from the fibrous ring surrounding the optic canal, with insertion into the medial part of the sclera of the eye, with nerve supply from the oculomotor nerve, and whose action directs the pupil medialward.
- Medial supraclavicular nerve
medial supraclavicular nerve n. One of several nerves arising from the cervical plexus that supply the skin over the upper medial part of the chest. Also called anterior supraclavicular nerve.
- Media mail
noun a class of US postage designated for sending books, recordings, and computer media Examples Media mail was a USPS term as of Jan. 7, 2001; formerly called Book Rate.
- Medial vastus muscle
medial vastus muscle medial vas·tus muscle (vās’təs) n. A muscle with origin from the shaft of the femur, with insertion into the tibial tuberosity, with nerve supply from the femoral nerve, and whose action extends the leg. Also called medial great muscle.